Lumel ND20 User manual
Below you will find brief information for Multifunction Meter ND20. The ND20 meter is a digital programmable panel meter designed to measure single-phase and 3-phase power network parameters, including voltage, current, power, energy, and more, with simultaneous display on an LCD. It is suitable for controlling and optimizing power electronics devices in industrial settings. The meter supports RS-485 communication and pulse/relay outputs.
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MULTIFUNCTION METER
ND20 www.sifamtinsley.co.uk
Multifunction Meters
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ND20
METER OF NETWORK PARAMETERS
User Manual - Issue 1.0
SUBJECT TO CHANGE WITHOUT NOTICE
This manual superseded all previous versions – please keep for future reference
2
Contents
1. APPLICATION ................................................................... 5
2. METER SET ...................................................................... 6
3. BASIC REQUIREMENTS AND OPERATIONAL SAFETY ..................... 6
4. INSTALLATION .................................................................. 7
5. METER DESCRIPTION .......................................................... 8
6. ND20 PROGRAMMING ........................................................ 12
7. UPDATING OF SOFTWARE .................................................... 35
8. RS-485 INTERFACE ............................................................ 37
9. ERROR CODES ................................................................. 60
10. TECHNICAL DATA ..............................................................62
11. VERSION CODES ...............................................................66
12. MAINTENANCE AND GUARANTEE ........................................... 68
3
4
1. APPLICATION
The N20D meter is a digital programmable panel meter destined for the measurement of single-phase power network parameters (2-wire network) and 3-phase, 3,4-wire network in balanced and unbalanced systems with the simultaneous display of measured quantities on a LCD display. The meter enables the control and optimization of power electronics devices, systems and industrial installation operations.
The meter ensures the measurement of: rms values of voltage and current, active, reactive and apparent power, active, reactive energy, power factors, frequency, 15, 30, 60 minutes’ mean active power, archive of power profile, THD and harmonic measurements. Additionally, the current value in the neutral wire is calculated. Voltages and currents are multiplied by given voltage and current ratios of measuring transformers. Indications of power and energy take into consideration values of programmed ratios. The value of each measured quantity can be transmitted to the master system through the RS-485 interface.
The relay output signals the overflow of the chosen quantity, and the pulse output can be used for the consumption check of 3-phase active and reactive energy.
The meter has additionally a continuous current output.
The meter has a galvanic separation between respective blocks:
- supply,
- measuring inputs,
- voltage and current inputs,
- analog output,
- RS-485 output,
- impulse output.
5
2. METER SET
The set of the ND20 meter is composed of:
1. ND20 meter ........................................... 1 pc.
2. user’s manual ....................................... 1 pc.
3. guarantee card ...................................... 1 pc
4. seal ........................................................ 1 pc.
5. holders to fix the meter in the panel ... 4 pcs
3. BASIC REQUIREMENTS AND
OPERATIONAL SAFETY
In the safety service scope, the ND20 meter meets to requirements of the EN 61010 -1 standard.
Observations Concerning the Operational Safety:
· All operations concerning transport, installation, and commissioning
as well as maintenance, must be carried out by qualified, skilled per
sonnel, and national regulations for the prevention of accidents must
be observed.
· Before switching the meter on, one must check the correctness
of connection to the network.
· Before removing the meter housing, one must switch the supply off
and disconnect measuring circuits
· The removal of the meter housing during the guarantee contract pe-
riod may cause its cancellation.
· The ND20 meter is destined to be installed and used in industrial
electromagnetic environment conditions.
· One must remember that in the building installation, a switch or a cir-
cuit-breaker should be installed. This switch should be located near
the device, easy accessible by the operator, and suitably marked.
6
4. INSTALLATION
The ND20 meter is adapted to be fixed on a panel by means of holders.
The fitting way is presented on the fig.1.
Housing overall dimensions: 96 x 96 x 77 mm. At the rear side of the meter, there are screw terminal strips which enable the connection of external wires with a cross-section up to 2.5 mm
2
One must prepare a 92.5
+0.6
x 92.5
+0.6
.
mm cut-out in the panel. The material thickness which the panel is made from should not exceed 15 mm.
Insert the meter from the frontal panel side with the disconnected supply voltage. After the insertion into the hole, fix the meter by means of holders.
Fig. 1. Meter fitting
Fig. 2 Meter overall dimensions
7
5. METER DESCRIPTION
5.1 Current Inputs
All current inputs are galvanically isolated (internal current transformers). The meter is adapted to co-operate with external measuring current transformers. Displayed current values and derivative quantities are automatically recoun in relation to the introduced external current transformer ratio. Current inputs are defined in the order as 1 A or 5 A.
5.2 Voltage Inputs
Quantities on voltage inputs are automatically converted acc. to the introduced ratio of the external voltage transformer. Voltage inputs are defined in the order as 3 x 57.7/100 V, 3 x 230/400 V.
5.3 Connection Diagrams
a)
Direct, semi-direct and indirect single-phase measurement
8
b)
Direct measurement in a 3-wire network
Supply OU pulse
OUA1
Semi-indirect measurement in a 3-wire network
9
10
c)
Supply OU pulse
OUA1
Indirect measurement with the use of 2 current transformers and 2 or 3 voltage transformers in a 3- wire network
Direct measurement in a 4-wire network.
Semi-indirect measurement in a 4-wire network.
Indirect measurement with the use of 3 current transformers and 2 or 3 voltage transformers in a
4-wire network.
Fig 3. Meter connection diagrams in a: a) single-phase network, b) 3-phase - 3 wire network, c) 3-phase - 4-wire network
11
6. ND20 PROGRAMMING
6.1 Frontal Panel
16 15 14 13 12
11
10
17
18
19
20
9
8
7
1 2 3 4 5 6
Fig 4. Frontal panel
Description of the frontal panel:
1 – abandon push-button – ESC
2 – push-button to displace to the left
3 – push-button to decrease the value
4 – push-button to increase the value
5 – push-button to displace to the right
6 – acceptance push-button - ENTER
7 – symbol of displayed value of
averaged active power
8 – display field of mean values,
frequency, time, power guard
9 – display field of basic quantities, energy,
THD, harmonics, date (rows 1, 2, 3)
10 – symbols indicating the display of
power factor, power tangent and
THD (row 4)
11 – units of displayed values
12 – symbols of digital data
transmission
13 – multipliers of basic values
14 – symbols of alarm switching
on/occurrence
15 – symbols of harmonic value, THD
display
16 – symbols of energy flow
17 – symbols of min / max quantities
18 – symbols of quantity affiliation to
respective phase
19 – symbols of power, energy
character
20 – symbol of 3-phase quantity display
12
6.2 Messages after Switching the Supply on
After switching the supply on, the meter performs the display test and display the ND20 meter name, rated current and voltage, the current program version, and next displays the measured values.
where: n.nn is the number of the current program version or the number of the custommade version.
Fig. 5. Message after starting the meter
Caution! If on displays the message Err Cal or Err EE appears, one must contact the service shop.
6.3 Monitoring of Parameters
In the measuring mode, quantities are displayed acc. to settled tables.
The pressure of the push-button (left) or push-button
(right) causes the transition between displayed quantities. The pressure of the push-button (Enter) causes the transition between mean and additional displayed values. The pressure of the push-button (down) causes the monitoring of the minimum value, however the pressure of the push-button
(up) causes the monitoring of the maximum value.
The pressure of the (ESC) push-button during the monitoring of these values, erases suitably minimum or maximum values. During the operation in the measuring mode of all harmonics (ALL-table 3), instead
13
of harmonic energy, harmonic percentage values are displayed.
Through and push-buttons, one can switch between successive harmonics. The harmonic no is alternately displayed with the value. Through the RS-485 interface one can set up the values, that would be visualized (starting from version 1.02).
The error display is described in the chapter 8.
When displaying the reactive power, a marker indicating the load character is displayed, capacitive ( ) or inductive ( )
Displayed quantities in the field 9 (fig. 4.) for 3-phase 4-wire measurement mode 3Ph/4W and single-phase 1Ph/2W are presented in the table 1a and 1b.
Backlit symbols row 1 row 2 row 3
Displaying
L
1
, V
L
2
, V
L
3
, V
U1
U21
U31
L
1-2
, V
L
2-3
, V
L
3-1
, V
U121
U231
U311
L
1
, A
L
2
, A
L
3
, A
I1
I21
I31
L
1
, W
L
2
, W
L
3
, W
P1
P21
P31
L
1
, Var
L
2
, Var
L
3
, Var
Q1
Q21
Q31 S31 optional
L
1
, VA
L
2
, VA
L
3
, VA
S1
S21
L
1
, PF
L
2
, PF
L
3
, PF
PF1
PF21
PF31
L
1
, tg
L
2
, tg
L
3
, tg tg1 tg21 tg31
Table 1a kWh
Imported active energy2
EnP
Backlit symbols row 1 row 2 row 3
Displaying
-, kWh
Exported active energy 2 kVarh reactive inductive energy
/ reactive positive energy
2 kVarh reactive capacitive energy
/ reactive negative energy
2 optional
L
1
, U/ THD U
L
2
, U/ THD U
L
3
, U/ THD U
Uh1 V /
THD1 %
Uh2 V /
THD2 %1
Uh3 V /
THD3 %1
L
1
, I/ THD I
L
2
, I/ THD I
L
3
, I/ THD I
Ih1 A/
THD1 %
Ih2 A/
THD2 %1
Ih3 A/
THD3 %1
14
Backlit symbols kWh
U I
L
1
, U
L
2
, U
L
3
, U
-, kWh
U I
L
1
, I
L
2
, I
L
3
, I c
W var
VA row 1 row 2 imported harmonic active. energy 1
Uh1n* %
Uh2n* %1 exported harmonic active energy1
Uh1n* %
Uh2n* % 1 cosinus j1 cosinus j2 1 year month
P
3phase 1
Q
3phase 1 row 3 Uh3n* % 1 Uh3n* % 1 cosinus j3 1 day
S
3phase 1
Displaying optional
* Harmonic voltage (current) of L1, L2, L3 phases for n-harmonic
Displayed quantities in the field 8 (fig. 4.)
Table 1b
Displayed symbols
3L, A
A
3L,
W
3L, var
3L,
VA
3L,
PF values in the
Displaying
Imean
3phase1
I(N)1
P
3phase1
Q
3phase1
S
3phase1 optional
PFmean
3phase1
3L, tg tgmean
3phase1
3L,
WAVG
P3phase
(15, 30 or 60 min)2
Backlit symbols
Displayed values in the row 4
Displaying
3L, c
Hz cosinus( j
3phase 1
) hour : minutes frequency
%
Consumption of ordered power
(in 15, 30 or 60 minutes’ time)2 optional
3L, THD U
Uh mean
U % 1
V/
THD U mean
In 1Ph/2W measurement mode:
1 - values are not calculated and not displayed,
2 - values calculated as corresponding values of first phase
3L, THD I
Ih mean
U % 1
A/
THD I mean
Displayed quantities in the field 9 (fig. 4.) for 3-phase 3-wire measurement mode 3Ph/3W and single-phase 1Ph/2W are presented in the table 2a and 2b.
15
Tablica 2a
Backlit symbols row 1
Displayed values row 2
Displaying row 3
L
1-2
, V
L
2-3
,
V
L
3-1
, V
U12
U23
L
1
, A
L
2
, A
L
3
, A
I1
I2
U31
I3 kWh imported active energy
-, kWh exported active energy optional kvar reactive inductive energy
/ reactive positive energy kvar reactive capacitive energy
/ reactive negative energy
Displayed symbols row 1
Displayed values row 2
Displaying row 3 year month day
W var
VA
P3phase
Q3phase optional
S3phase
Displayed quantities in the field 8 (fig. 4.)
Displayed symbols
Displayed values in the row 4
Displaying
3L, A
Imaen
3phase
3L, W 3L, var 3L, VA 3L, PF 3L, tg
P
3phase
Q
3phase
S
3phase optional
PFmean
3phase tgmean
3phase
Table 2b
3L, WAVG
P3phase
(15, 30 or 60 min)
Backlit symbols
Displayed values in the row 4
Displaying
3L, c cosinus ( j
)3phase hour : minutes
Hz frequency optional
%
Consumption of ordered power
(in 15, 30 or 60 minutes’ time)
16
Performed calculations:
Reactive power (the calculation method configured):
Q
=
Q
=
i k
∑
= 1
U
S i
*
2
−
I i
P
2
* sin
(
∠
U i
,
I i
) where k – harmonic number (k = 21 dla 50 Hz, k = 18 dla 60 Hz)
Power factor PF:
PF
=
P
/
S
Tangens power:
tg
j =
Q
/
P
Cosinus: cosinus between U and I
The exceeding of the upper indication range is signaled on the display by upper horizontal lines, however the exceeding of the lower range is signaled by lower horizontal lines.
In case of averaged power measurement P
3-phase
, single measurements are carried out with a 15 seconds’ quantum. Suitably to the 15 min,
30 min, 60 min selection, 60, 120 or 240 measurements are averaged.
After starting the meter or the power erasing, the first value will be calculated after 15 seconds since the meter switching on or erasing.
Till the time to obtain all active power samples, the value of averaged power is calculated from already measured samples.
The current in the neutral wire I
(N) vectors
is calculated from phase current
The value of consumed ordered power can be used for a previous warning against the exceeding of ordered power and to escape of fines related with it. The consumption of ordered power is calculated on the base of time interval set for the synchronization of the mean active power and the value of ordered power (section 6.5.1). The consumption example is presented in the section 6.5.3.
The alarm switching on is signaled by the lighting of the AL1 inscription
(in the mode A3non, A3nof, A3_on, A3_of: of AL1, AL2, AL3 inscriptions).
The end of alarm duration at the alarm signaling support switched on, is indicated by the pulsation of the AL1 inscription (in the mode A3non,
A3nof, A3_on, A3_of: of AL1, AL2, AL3 inscriptions).
17
6.4 Operating modes
18
Fig. 6. Operating modes of the ND20 meter.
6.5. Parameter Settings
Fig 7. Setup menu
The entry in the programming mode is carried out through the pressure and holding down of the push-button during ca 3 sec. The entry in the programming mode is protected by the access code. If there is not such a code, the program transits into the programming option. The inscription SET is displayed (in the first row) and the first group of PAr parameters. The monitoring of parameters is always available through the pressure and holding down the push-button during ca 3 sec.
19
20
fac- turer’s
Type of system connec fac- turer’s para
Display backlight
Way to count reactive energy
Way to count reactive power
Erasing of the active mean power archive
Erasing of active mean power
Erasing of watthour meters par Meter
Access code
Address in MOD mission mode
Output value when erro fac- turer’s
Mode of output
Lock of alarm reswit
Higher value of the input range
Lower value of the input range
Type of conti nuous outpu
Support of the alarm ap pearance signaling lay of the switching reaction
Higher value of the input range
Lower value of the input range
Alarm type
Quantity on the continuous
(table 6 in the user’s manual
Quantity on the continuous
(table 6 in the user’s manual)
Hour, minute oUt Output alr Alarm date Date and time dIsp Display
Phase voltages
Phase active powers
Phase currents
Power phase
Power factors
Reactive capaci
Reactive inductive energy active energy active energy ted har monic energy
THD of phase
THD of phase volta
Three- phase mean Cosi
Power P3phase (15,30
Three- phase mean Tangent
Three- phase mean Power Factor
Power Q3phase
Power Q3phase
Current in neutral
Three- phase mean current
P3phase, Q3phase, S3phase,
Phase Cosinu
Exported harmonic energy mean THD
of phase currents mean THD
of phase voltages
6.5.1 Setting of Meter Parameters
Select the PAr mode in options (by or push-buttons) and approve the choice by the push-button.
Table 3
1
2
3
4
5
6
Introduction of the access code
Ratio of the current transformer
Ratio of the voltage transformer
Desi- gnation
SEc tr_I tr_U oFF,
1 ...
60000
1 ...
10000
0.1 ...
4000.0
Notes/ descrip
0 - without code 0
1
1
Synchronization of mean active power
Number of the measured harmonic/
THD
Storage of minimum and maximum values with errors
Syn 15, c_15, c_30, c_60 nHAr tHd, ALL,
2 ... 21 erLI oFF, on
Synchronization of mean active power:
15 - 15 minutes’ walking window
(record synchronized with the clock every 15 minutes)
c_15 – measurement synchronize with the clock every 15 minutes.
c_30 – measurement synchronized with the clock every 30 minutes,
c_60 – measurement synchronized with the clock every 60 minutes, tHd – THD
ALL – successive calculations of harmonics inserted in registers
2...21 – harmonic number
( in this mode, the active energy is calculated) oFF – storage of only correct values
(from the measuring range).
on – storage of also error occurrences in measurements (values in registers 1e20 and 1e20)
15 tHd on
turer’s value
21
7 Way to calculate reactive power q_t trGLE,
SInUS
TrGle:
Q
=
S
2 −
P
2
SInUS:
Q
=
k
∑
U i
*
I i
* sin
(
∠
U i
,
i
= 1 k - harmonic number, k = 21 for 50 Hz, k = 18 for 60 Hz
I i
) cAP – inductive and capacitive energy
SIGn – positive and negative energy trGLE
8
9
10
Way to calculate reactive energy
Display backlit
Erasing of watt-hour meters
En_q
LGHt
En 0 cAP,
SIGn oFF,
1 .. 60,
on no, EnP,
Enq,
EnH,
ALL off – disabled, on – enabled,
1..60 – time in seconds of backlit support since the push-button pressure. no – lack of actions,
EnP – erasing of active energy,
Enq – erasing of reactive energy,
EnH – erasing of harmonic energy.
ALL – erasing of all energy yES -erasing of power cAP on no
11
12
Erasing of mean active power
Reset of mean active power archive
Ordered power
PA 0
PAr0 no, yES no, yES yES - erasing of archive no no
13 PAor 0...144.0
Ordered power for forecasting the power consumption in % of the rated value
100.0
14 Measurement mode conn 3Ph-4,
3Ph-3,
1Ph-2
Meter connection way
3Ph-4
15 Manufacturer’s parameters dEf no, yES Restoration of manufacturer’s parameters of the group.
no
The automatic erasing of energy is carried out:
- for active energy when changing: voltage or current ratio;
- for reactive energy when changing: voltage or current ratio, the way
of reactive power calculation;
- for energy of harmonics when changing: voltage or current ratio,
when changing the measured harmonic number.
22
Values are set by means of and push-buttons, however the position of the set digit is selected by means of and pushbuttons. The active position is signaled by the cursor. The value is accepted by the push-button and resigned by the pressure of the push-button. During the acceptation, the value insertion possibility in the range is checked. In case when the value is set beyond the range, the meter remains in the parameter edition mode, however the value is set on the maximum value (when the value is too higher) or on the minimum value (when the value is too lower).
6.5.2. Setting of Output Parameters
Select the out mode in options and approve the choice by the push-button.
Table 4
1
2
3
4
5
6
Notes/ descrip turer’s value
Quantity on the continuous output
(code acc. to the table 6)
Type of continuous output
Lower value of the input range
Upper value of the input range
Lower value of the output range
Upper value of the output range
An_n
An_t
AnIL
AnIH
AnOL
AnOH table 6
0_20,
4_20
-144.0 ...
144.0
-144.0 ...
144.0
0.00 ...
24.00
0.00 ...
24.00
(the code acc. to the table 6) P
The selection 4_20 causes the switching on of the minimum output current limitation on the level ca 3.8 mA.
0_20 in % of the rated quantity value in % of the rated quantity value in mA in mA
0
100.0
0
20
23
7
Output mode
Antr nor,
AnOh output:
nor – normal work,
AnOL – set value AnOL,
AnOH – set value AnOH, nor
8
Output value at error
AnEr 0 ... 24 in mA 24
9 Io_n
10
Address in network
Addr 1 ... 247
11
12
13
Transmission mode
Baud rate
Manufacturer’s parameters trYb bAUd dEf r8E1, r8n1
4.8 k, 9.6
38.4 k no, yES
Number of impulses for 1 kWh 5000
1
8n2
9,6 k no
6.5.3. Setting of Alarm Parameters
Select the ALr mode in options and approve the choice by the push-button.
Table 5
1
meter name
Quantity in the alarm output (code acc. to the table 6)
Desi- gnation
AL_n
2 Alarm type table 6
AL_t n-on, n-oFF, on, oFF,
H-on,
H-oFF,
A3non,
A3nof,
A3_on,
A3_of
24
Notes/ des
Fig. 9
P
turer’s value
n-on
3
4
5
6
Lower value of the input range
Upper value of the input range
Time delay of the switching reaction
ALoF
ALon
ALdt
Support of the alarm occurrence signaling
AL_S
-144.0 ...
144.0
-144.0 ...
144.0
0 ... 900 oFF, on in % of the rated quantity value in % of the rated quantity value in seconds (for quantities AL_n =P_ord the delay occurs only when switching the alarm on)
In the situation when the support function is enabled, after the retreat of the alarm state the alarm symbol is not blanked but begins to pulsate. The signaling exists till the moment of blanking it by means of the and push-buttons combination (during 3 seconds).
The function concerns only and exclusively the alarm signaling, then relay contacts will be active without support, acc. to the selected type of alarm.
99
101
0 oFF
7
8
Interlocking of a renewed alarm switching on
Manufacturer’s parameters
AL_b dEF
0...900
no, yES in seconds
Restoration of manufacturer’s parameters of the group.
0 no
The write of the value ALon lower than ALoF switches the alarm off.
25
Selection of the monitored value:
Table 6
07
08
09
10
11
12
13
03
04
05
06
14
15
16
17
18
19
00
01
02
20
Item/ value in register
4015
Displayed parameter
Kind of quantity
Value for the percentage conversion of alarm values and outputs (100%)
off lack of quantity /alarm disabled/
U_1 voltage of phase L1
I_1 current in the phase wire L1
P_1 active power of phase L1 q_1 reactive power of phase L1
S_1 apparent power of phase L1
PF1 tg1 active power factor PF of phase L1 tg j coefficient of phase L1
U_2 voltage of phase L2
I_2 current in the phase wire L2
P_2 active power of phase L2 q_2 reactive power of phase L2
S_2 apparent power of phase L2
PF2 active power factor PF of phase L2 tg2 tg j coefficient of phase L2
U_3 voltage of phase L3
I_3 current in the phase wire L3
P_3 active power of phase L3 q_3 reactive power of phase L3
S_3 apparent power of phase L3
PF3 active power factor PF of phase L3 none
Un [V] *
In [A] *
Un x In x cos(0°) [W] *
Un x In x sin(90°) [var] *
Un x In [VA] *
1
1
Un [V] *
In [A] *
Un x In x cos(0°) [W] *
Un x In x sin(90°) [var] *
Un x In [VA] *
1
1
Un [V] *
In [A] *
Un x In x cos(0°) [W] *
Un x In x sin(90°) [var] *
Un x In [VA] *
1
26
26
27
28
29
30
31
32
33
21
22
23
24
25 tg3 tgj coefficient of phase L3
U_A mean 3-phase voltage
I_A
P mean 3-phase current
3-phase active power
(P1 + P2+ P3) q
3-phase reactive Power
(Q1 + Q2 + Q3)
S
3-phase apparent Power
(S1 + S2 + S3 )
PF_A 3-phase active power factor PF
Tg_A
3-phase tgj coefficient
FrEq frequency
U12
U23
U31 phase-to-phase voltage L1-L2 phase-to-phase voltage L2-L3 phase-to-phase voltage L3-L1
U4_A mean phase-to-phase voltage
34 P_At mean active power
35 P_ord
Used percentage of the ordered active power (consumed energy)
*Un, In – rated values of voltages and currents
1
Un [V] *
In [A] *
3 x Un x In x cos(0°)
[W] *
3 x Un x In x sin(90°)
[var] *
3 x Un x In [VA] *
1
1
100 [Hz]
3
3
Un [V] *
Un [V] *
3 Un [V] *
3 Un [V] *
3 x Un x In x cos(0°)
[W] *
100%
a) n-on
27
b) n-off c) On d) OFF
Fig. 9. Alarm types: a),b) normal c) enabled d) disabled
Remaining types of the alarm:
– H-on – always enabled;
– H-oFF – always disabled,
– A3non – when the “n-on” alarm type occurs on any of the phases
– the relay switches on and the corresponding symbol is illuminated
(AL1 – phase 1, AL2 – phase 2, AL3 – phase 3). When all alarms fade away, the relay switches off.
– A3nof – when the “n-off” alarm type occurs on any of the phases
– the relay switches on and the corresponding symbol is illuminated
(AL1 – phase 1, AL2 – phase 2, AL3 – phase 3). When all alarms fade away, the relay switches off.
28
– A3_on – when the “on” alarm type occurs on any of the phases – the relay switches on and the corresponding symbol is illuminated (AL1
– phase 1, AL2 – phase 2, AL3 – phase 3). When all alarms fade away, the relay switches off.
– A3_of – when the “off” alarm type occurs on any of the phases – the relay switches on and the corresponding symbol is illuminated
(AL1 – phase 1, AL2 – phase 2, AL3 – phase 3). When all alarms fade away, the relay switches off
In the “A3” alarm series, the alarm value must range from 0-7.
They work with equal ALof and ALon hysteresis thresholds for all of the phases. Signaling sustainment can be switched off by pressing together and buttons (for 3 seconds).
Example no 1 of alarm setting:
Set the alarm of n-on type for the monitored quantity P – 3-phase active power, version 5 A; 3 x 230/400 V. Switching the alarm on, after exceeding 3800 W, switching the alarm off after decreasing 3100 W.
Calculate: rated 3-phase active power: P = 3 x 230 V x 5 A = 3450 W
3450 W – 100 % 3450 W – 100 %
3800 W – ALon %
It appears: ALon = 110 %
3100 W – ALoF %
ALoF = 90 %
Set: Monitored quantity: P; Kind of alarm: n-on, ALon 110, ALoF 90.0.
Example no 2 of alarm setting:
Set the alarm of earliest warning about the possibility to exceed the ordered 1 MW power on the level 90% at the one hour accounting.
Measuring current transformer 2500/5 A, voltage :230 V, Instantaneous maximum import of power: 1.5 MW.
Calculate: rated 3-phase active power of the ND20 meter: P = 3 x 230 V x 2500 A (500 * 5 A) = 1.725 MW (500 * 3450 W) – 100%;
90% of ordered power / rated power = 90.0% * 1 MW / 1.725 MW = 52.1 % of the rated meter value (rounding down).
The’ ordered hourly power (energy for consumption): 1 MWh / 4 quarters
= 900 MWs,
90% - 810 MWs. Remaining 10% at maximum power import would be used in time: 900 MWs / 1.5 MW = 60 s
29
Fig 10. Measurement of 60 minutes’ active power consumption synchronized with the clock, with alarm set on a 90% consumption.
An example of the parameter value utilization of ordered active power to switch the alarm on is presented on the fig. 10.
The time delay is set on 0 sec.
In the calculated e x a m p l e , f o r remaining 10% of ordered power, at the maximum power c o n s u m p t i o n , devices could still work during 60 sec without exposing customers to fines. when setting the time delay ALdt on 60 sec, the alarm would not be enabled.
Set: Monitored quantity: P_ord, Kind of alarm: n-on, ALon = 90.0, ALoF = 89.9,
Tr_1 = 500, Syn = c_60, Time delay ALdt = 0 or 240 s.
6.5.4 Setting Date and Time
Select the dAtE mode in options and approve the choice by the push-button. Seconds are reset after setting hour and minute values.
Table 7
Item Parameter name Designation range
Manufacturer’s value
1 Hour, minute t_H 0 ... 23, 0 ... 59 0.00
2 Month, day t_d 1 ... 12, 1 ... 31 1.01
3
30
Year t_y 2001 ... 2100 2001
6.5.5. Setting of displayed values
Select the dISP mode in options and approve the choice by the push-button.
Table 7
Displayed parameters in the row 1 - 3
1 Phase voltages U_Ln oFF, on
2 Phase-to-phase voltages
3 Phase currents
4 Active phase powers
5 Reactive phase powers
6 Apparent phase powers
U_LL
I_Ln
P oFF, on oFF, on oFF, on
7
8
9
10
Phase PF power factors
Phase Tangents j factors
Input active energy
Output active energy q
S
PF tG
EnP
EnPoFF, on oFF, on oFF, on oFF, on oFF, on oFF, on
11 Inductive reactive energy
12 Capacity reactive energy
13 THD of phase voltage
14 THD of phase current
15 Harmonic input active energy
16 Harmonic output active energy
17 Phase Cosinus j
18 Date
Enq
EnqtHdu tHdI
EnH
EnHcos date oFF, on oFF, on oFF, on oFF, on oFF, on oFF, on oFF, on oFF, on on on on on on on on on on on on on on on on on on on
31
19 3-phase active, reactive, apparent power
PqS
Displayed parameters in the row 4
20 Three-phase mean current I_A
21 Current in neutral wire
22 Three-phase active power
I_n
3P
23 Three-phase reactive power
24 Three-phase apparent power
25 Three-phase mean power factor PF
26
31
32
33
Three-phase mean Tangent
Three-phase ordered power
Mean THD of phase voltages
Mean THD of phase currents j factor
27 Three-phase mean active power (15,30 or 60 minutes)
28 Three-phase mean Cosinus j
29 Hour
30 Frequency
3q
3S
PF_A tG_A
PAvG coSA
HoUr
Freq p_or tH3U tH3l oFF, on oFF, on oFF, on oFF, on oFF, on oFF, on oFF, on oFF, on oFF, on oFF, on oFF, on oFF, on oFF, on oFF, on oFF, on
34 Diplay of parameters - ON
35 Display of parameters - OFF on off no, YES no, YES on on on on on on on on on on on on on on on no no
Note!
When you turn off the display of all parameters, the phase current values and three-phase mean current are displayed.
32
6.6. Configuration of THD Measurement,
Harmonics and Energy for the Harmonic
The meter has 3 work modes related to the THD and harmonic calculation.
When setting the parameter of the harmonic number:
- tHd – the meter measures every 1 second only the THD value for currents and voltages, the result is exposed on the display and expressed in registers in percentages. Energy of harmonics is reset and particular harmonics include the error value (1e20);
- All – the meter measures harmonics from 2 up to 21, for 50 Hz frequency
(from 2 up to 18 for 60 Hz frequency). Energy of harmonics is reset.
- 2 – 21 – measurement of the selected harmonic value, every 1 second, the result is exposed on the display and in basic units (V, A) in registers.
Energy for the given harmonic is counted up.
The switching of the harmonic number or the change of voltage or current ratio resets energy for harmonics.
6.7. Archive – Active Power Profile
The ND20 meter is equipped with an archive allowing to store up to
9000 measurements of mean active power. Mean active power PAV is archived with a 15, 30, 60 minutes’ interval of time, synchronized with the real time clock. In case of operation in the 15 minutes’ walking window mode, the archiving is performed in the same way as for the 15 minutes’ interval of time (fig. 11). The direct access to the archive is for 15 records including the date, time and value placed in the range of addresses
1000 -1077. The position of the first (oldest) archived sample is placed in the register 1000, however the position of the last archived sample
(youngest) is placed in the register 1001. the value of the first record, from 15 available records placed in registers 1003 – 1077, is written in the register 1002. The write of the first read out record value (1 – 9000) causes the data updating of 15 records for readout.
In registers, in which samples were not already been written, are 1e20 values.
33
The archive is organized in the shape of a circular buffer. After writing the 9000 th value, the next overwrites the oldest with number 0, and the successive, the next with number 1, etc.
If the value of the register 1000 is higher than 1001, that means that the buffer was overflowed one time at least. Eg, the value 15 in the register
1000, and 14 in the register 1001 means, that there were already more than nine thousand samples and oldest samples are from the record 15 up to 9000, next from the record 1 to the youngest record with number 14.
The change of the current or voltage ratio, kind of mean power, causes the archive erasing.
The reset of averaged power or the change of averaging time does not erase the archive.
The automatic erasing of the archive and averaged power is performed when changing the voltage or current ratio.
Fig. 11. Measurement of 15 minutes’ mean active power synchronized with the clock.
34
7. UPDATING OF SOFTWARE
Function enabling updating of software from the computer of the PC with software LPCon was implementation in meter ND20 (from software version
1.09). Free software LPCon and update files are accessible on the site
www.sifamtinsley.co.uk. The connected to the computer converter
RS485 is required on USB to the updating, e.g.: the converter PD10. a) b)
Fig. 13. Program view: a) LPCon, b) updating of software
Note!
After updating the software, the manufacturer’s settings of the meter should be set, so it is recommended to save the meter parameters before updating using the software LPCon.
35
After starting LPCon’s software COM port, baudrate, transmission mode and adress should be set. It can be done in Options. Then, ND20 meter should be selected from Device. Push icon Load to read and save current settings. Open window Updater (LU) – figure 13b
>Updating of devices firmware. Push Connect. Update progress is shown in Messages section. Text Port opened appear after correctly opened port. Putting meter in update’s mode can be done in two ways: remote from LU (with settings from LPCon – port, baudrate, transmission mode and adress) or by turning power on while button pressed.
Meter display shows the „boot” inscription with bootloader version,
LU shows message „Device found” with name and current version of firmware. Using button browse to the meter upgrade file. If the file is opened correctly, a File opened message is displayed. Press the
Send button. When upgrade is successfully completed, meter reverts to the default settings and begins normal operation while the information window displays Done message and upgrade elapsed time. Close LU and go to Restoration of default parameters. Select checkbox and press
Apply button. After the LU window is closed, press the Save icon to save all initially read parameters. Current firmware version can be checked when meter is power on.
Warning!
Turning the meter off during upgrade process may result in permanent damage!
36
8. RS-485 INTERFACE
The implemented protocol is compliant with the PI-MBUS-300 Rev G,
Modicon. Parameter set of the serial ND20 meter link:
· identifier
· meter address:
· baud rate
0xBC
1..247
4.8, 9.6, 19.2, 38.4 kbit/s,
· working mode
· information unit
· maximum response time
Modbus RTU,
8N2, 8E1, 8O1, 8N1,
600 ms.
· maximum quantity of read out registers in one request
41registers – 4 byte registers,
82 registers – 2 byte registers,
· implemented functions 03, 04, 06, 16, 17,
- 03, 04 - readout of registers,
- 06 - write of one register,
- 16 - write of n-registers,
- 17 - device identification,
Manufacturer’s settings: address 1, baud rate: 9600 baud, RTU 8N2 mode,
Readout of n-registers (code 03h)
Example 1 .
Readout of 2 registers 16-bit of integer type, starting with the register with the 0FA0h (4000) address - register values 10, 100.
Request:
Device address
01
Function
03
Register address
B1
0F
B0
A0
Number of registers
B1
00
B0
02
CRC
Control sum
C7 3D
37
Response:
Device address
01
Function
Number of bytes
Register address
0FA0
(4000)
B1
00
B0
0A
Number of registers
0FA1 (4001)
B1
00
B0
64
CRC
Control sum
Example 2
. Readout of 2 registers 32-bit of float type as 2 registers
16-bits, starting with the register with the 1B58h (7000) address
- register values 10, 100.
Request:
03 04 E4 6F
Device address
01
Function
03
Register address
B1
1B
B0
58
Number of registers
B1
00
B0
04
CRC
Control sum
C3 3E
Response:
01 03 08
Number of baytes
Value from register
1B58
(7000)
B3
Value from register
1B59
(7001)
B2 B1 B0
41 20 00 00
Value from register
1B5A (7002)
B3
42
B2
C8
Value from register
1B5B
(7003)
B1
00
B0
00
CRC
Control sum
E4 6F
Example 3
. Readout of 2 registers 32-bit of float type as 2 registers
16-bit, starting with the register with the 1770h (6000) address - register values 10, 100.
Request
Device address
01
Function
03
Register address
B1
17
B0
70
Number of registers
B1
00
B0
04
CRC
Control sum
4066
38
Response:
Device address
01
Number of bytes
03 08
Value from register
1770h
(6000)
B1
00
B0
00
Value from register
1770h
(6000)
B3
41
B2
20
Value from register
1772h
(6002)
B1
00
B0
00
B3
42
Value from register
1772h
(6002)
B2
C8
CRC
Control sum
E4 6F
Example 4 .
Readout of 2 registers 32-bit of float type, starting with the register with the 1D4Ch (7500) address - register values 10, 100.
Request:
Device address
01
Function
03
Register address
B1
1D
B0
4C
Number of registers
B1
00
B0
02
CRC
Control sum
03 B0
Response:
Device address
01 03 08
Number of bytes
B3
41
Value from register
1D4C (7500)
B2 B1
20 00
B0
00
B3
42
Value from register
1D4D (7501)
B2 B1
C8 00
B0
00
CRC
Control sum
E4 6F
Recording a single register (code 06h)
Example 5 .
Recording the value 543 (0x021F) in the register 4000
(0x0FA0)
Request:
Device address
01
Function
06
Register address
B1
0F
B0
A0
Number of registers
B1
02
B0
1F
CRC
Control sum
CA 54
39
Response:
Device address
Function
01 06
Register address
B1
0F
B0
A0
Number of registers
B1
02
B0
1F
CRC
Control sum
CA 54
Recording to n-registers (code 10h)
Example 6 .
Recording 2 registers starting with the register with the
0FA3h (4003) address recorded values 20, 2000.
Request:
Value for register
0FA3 (4003)
Value for register
0FA4 (4004)
CRC
Control sum
B1 B0 B1 B0
01 10
Response:
0F A3 00 02 04
Device address
01
Function
10
00
Register address
B1
0F
B0
A3
14
Report identifying the device (code 11h)
Example 7 .
Device identification
Request:
Table 8
Device address
Function CRC
Control sum
01 11 C0 2C
40
07
Number of registers
B1
00
B0
02
D0 BB 9A
CRC
Control sum
B2 FE
Response:
Information field of the device software version (eg, „ND20-
1.09 b-1.04” - ND20 device with software version 1.09 and bootloader version 1.04)
CRC
Control sum
01 11
19 BC FF 4E 44 32 30 2D 31 2E 30 39 20
20 20 20 20 20 20 62 2D 31 2E
30 34 20
DB 42
Map of ND20 meter registers
In the ND20 meter, data are placed in 16 and 32-bit registers. Process variables and meter parameters are placed in the address area of registers in a way depended on the variable value type. Bits in 16-bit registers are numbered from the youngest to the oldest (b0-b15). 32-bit registers include numbers of float type in IEEE-754 standard.
Table 9
Address range
Type of value
1000 – 1077 Integer
(16 bits)/ record
4000 – 4055 Integer
(16 bits)
Description
Archive of the averaged power profile. The table 10 includes the register description.
6000 – 6319
6320 – 6573
Float
(2x 16 bits)
Float
(2x 16 bits)
The value is placed in one 16-bit register. The table
11 includes the register description. Registers for write and readout.
Value placed in two successive 16-bit registers.
Registers include the same data as 32-bit registers from the area 7500 – 7659. Registers for readout.
Sequence of bytes (1-0-3-2).
Value placed in two successive 16-bit registers.
Registers include the same data as 32-bit registers from the area 7660 – 7786. Registers for readout.
Sequence of bytes (1-0-3-2).
41
7000 – 7319
7500 – 7659 Float
(32 bits)
7660 – 7786 Float
(32 bits)
7800 – 8052
Float
(2x16 bits)
Float
(2x16 bits)
Value placed in two successive 16-bit registers.
Registers include the same data as 32-bit registers from the area 7500 – 7659. Registers for readout.
Sequence of bytes (3-2-1-0).
Value placed in one 32-bit register. The table 12 includes the register description. Registers for readout.
Value placed in one 32-bit register. The table 12 includes the register description. Registers for readout.
Value placed in two successive 16-bit registers.
Registers include the same data as 32-bit registers from the area 7660 – 7786. Registers for readout.
Sequence of bytes (3-2-1-0).
Address of 16 bit- registers
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
Table 10
Operations
R
Description
R
R
Position of oldest archived mean power.
R Position of youngest archived mean power
R/W First available record – NrBL (range 1...9000)
R Year of archived mean power with number NrBL + 0
Month * 100 + day of archived mean power with number
NrBL + 0
Hour * 100 + minute of archived mean power with number NrBL + 0
R
R
Value of archived mean power with number NrBL + 0 float type – 4 bytes in sequence 3-2-1-0
R
R
Year of archived mean power with number NrBL + 1
Month * 100 + day of archived mean power with number
NrBL + 1
42
1074
1075
1076
1077
1010
1011
1012
...
1073
R
R
R
R
R
R
R
...
R
Hour * 100 + minute of archived mean power with number NrBL + 1
Value of archived mean power with number NrBL + 1 float type – 4 bytes in sequence 3-2-1-0
...
Year of archived mean power with number NrBL + 14
Month * 100 + day of archived mean power with number
NrBL + 14
Hour * 100 + minute of archived mean power with number NrBL + 14
Value of archived mean power with number NrBL + 14 float type – 4 bytes in sequence 3-2-1-0
Table 11
Register address
4000
Operation
RW
4001
4002
4003
RW 0...900 [s]
RW
RW
Range
0...60000
0...1440
[ o / oo
]
1..10000
Description
Protection - password
Interlocking time of the renewed switching of the relay output on
Ordered mean power *10
Current transformer ratio
By default
0
0
1000
1
4004 RW 1..40000
Voltage transformer ratio *10 10
43
44
4005 RW
4006 RW
4007 RW
4008 RW
4009 RW
4010 RW
0..3
0..22
0,1
0,1
0,1
0...61
Synchronization of mean active power:
0 – 15 minutes’ walking window
(record synchronized every 15 minutes with the clock)
1 – measurement synchronized every 15 minutes with the clock
2 – measurement synchronized every 30 minutes with the clock
3 – measurement synchronized every 60minutes with the clock
Number of the measured harmonic/ THD
0 – THD,
1 – all harmonics are successively measured and placed in registers 7660-7780, 2...21
– harmonic number with energy.
Storage way of minimum and maximum values
0 – without errors,
1 – with errors
Way to calculate reactive power:
0:
Q
=
S
2 −
P
2
1:
Q
=
i k
∑
= 1
U i
*
I i
* sin
(
∠
U
k – harmonic number, k = 21 for 50 Hz,
i
,
I i
) k = 18 for 60 Hz
Way to calculate reactive energy:
0 – inductive and capacitive energy
1 – positive and negative energy
Display backlit:
0 – disabled,
1-60 – backlit time in seconds since the push-button pressure,
61 – always enabled
0
0
0
0
0
61
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
0...4
0,1
0,1
0,1
0,1 .. 35
0 ... 9
Erasing of watt-hour meters:
0 – without changes,
1- erase active energy,
2 – erase reactive energy,
3 – erase energy of harmonics,
4 – erase all energy.
Erasing of mean active power
P
AV
Erasing of the averaged power archive
Erase min and max
Quantity on the alarm relay output
(code acc. to the table 6)
Output type: 0 – n-on, 1– n-oFF,
2 – on, 3 - oFF, 4 – H-on,
5 – H-oFF, 6 - A3non, 7 - A3nof,
8 - A3_on, 9 - A3_of
-1440..0..
1440 [ o / oo
]
-1440..0..
1440 [ o
/ oo
]
0...900 s
1..2000
[10uA]
0..2
0,1
-1440..0..
1440 [ o / oo
]
Lower alarm switching value
Upper alarm switching value
Delay of the alarm switching ( for quantity AL_n = P_ord – rgister
4015 =35, the delay occurs only when the alarm is switched on.
Alarm signaling support
Quantity on the continuous output no 1/ code acc. to the table 6 /
Continuous output type:
0 – 0...20 mA;
1 – 4...20 mA
Lower value of the input range in
[ o / oo
] of the rated input range.
-1440..0..
1440 [ o / oo
]
Upper value of the input range in [ o / oo
] of the rated input range.
0
0
990
1010
0
0
1000
0
0
0
24
0
24
0
45
46
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4025
4026
4027
4038
4039
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
R
R
-2000..0..
2000
[10uA]
1..2000
[10uA]
0..2
Lower output range value of the output [10 uA]
Upper output range value of the output [10 uA]
Manual switching of the analog output 1:
0 – normal work,
1 – set value from the register 4026,
2- set value from the register 4027,
Analog output value when error
0..24
[mA]
1000..
20000
1..247
0..3
0..3
0.1
0..2359
101..
1231
2009..
2100
0,1
0..15258
0.. 65535
Number of impulses for the impulse output
Address in the MODBUS network
Transmission mode: : 0->r8n2,
1->r8E1, 2->r8o1, 3->r8n1
Baud rate: 0->4800, 1->9600
2->19200, 3->38400
Bring up to date the transmission parameter change
Hour *100 + Minutes
Month * 100 + day
Year
Record of standard parameters (together with the reset of energy and min, max, averaged power)
Imported active energy, two older bytes
Imported active energy, two younger bytes
0
2000
0
0
24
5000
1
0
1
0
0
101
2009
0
0
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056*
4057*
4058*
R
R
R
R
R
R
R
R
R
R
R
RW
R
R
R
RW
RW
RW
R
0..15258
0..65535
0..15258
0..65535
0..15258
0..65535
0..15258
0..65535
0..15258
0..65535
0..65535
0..65535
0..65535
0..65535
0..65535
0..65535
0..65535
0...2
0..65535
Exportedactive energy, two older bytes exported active energy, two younger bytes
Reactive inductive energy, two older bytes
Reactive inductive energy, two younger bytes
Reactive capacitive energy, two older bytes
Reactive capacitive energy, two younger bytes
Imported harmonic active energy, two older bytes
Imported harmonic active energy, two younger bytes
Exported harmonic active energy, two older bytes
Exported harmonic active energy, two younger bytes
Status register – description below
Serial number, two older bytes
Serial number, two younger bytes
Program version (*100)
Displayed parameters of standard values
Displayed parameters of average values
Displayed parameters of standard values 2
Measurement mode: 0->3Ph /
4W, 1->3Ph / 4W 2-> 1Ph/2W reserved
0
0
0
0
0
0
0
-
-
-
0xFFFF
0xFFFF
0xFFFF
0
0
0
0
0
47
4059*
4060*
4061*
R
R
R
0..65535
0..65535
0..65535
reserved reserved
Register of status 2 - description below
In parenthesis [ ], suitably is placed: resolution or unit.
* starting from version 1.09
0
0
0
Energy is made available in hundreds of watt-hours (var-hours) in double
16-bit register, and for this reason, one must divide them by 10 when calculating values of particular energy from registers, ie:
Imported active energy = (register 4038 value x 65536 + register 4039 value) /10 [kWh]
Exported active energy = (register 4040 value x 65536 + register 4041 value) /10 [kWh]
Reactive inductive energy = (register 4042 value x 65536 + register 4043 value) /10 [kVarh]
Reactive capacitive energy = (register 4044 value x 65536 + register 4045 value) /10 [kVarh]
Imported active harmonic energy = (register 4046 value x 65536 + register 4047 value) /10 [kWh]
Exported active harmonic energy = (register 4048 value x 65536 + register 4049 value)/ 10 [kWh]
Device status register (address 4050, R):
Bit 15 – „1” – damage of the nonvolatile memory
Bit 14 – „1” – lack of calibration or erroneous calibration
Bit 13 – „1” – error of parameter values
Bit 12 – „1” – error of energy values Bit 4 – „1” – too low voltage of phase C
Bit 11 – „1” – error of phase sequence
Bit 3 – „1” – too low voltage of phase B
Bit 2 – „1” – too low voltage of phase A Bit 10 – current range „0” – 1 A~;
1” – 5 A~
Bit 9 Bit 8 Voltage range
Bit 7 – „1” – the interval of averaged power is not elapsed
Bit 6 – „1” – frequency for THD calculation beyond intervals
- 48 – 52 for frequency 50 Hz,
- 58 – 62 for frequency 60 Hz
Bit 5 – „1” – voltage too low for frequency measurements
0 0 57.7 V~
0 1 230 V~
Bit 1 – the RTC time battery is used up
Bit 0 – state of relay output „1” – On,
„0” - off
48
Register of status 2 - nature of the reactive power (address 4061, R):
Bit 15 – reserved
Bit 14 – „1” – alarm indication in phase L3 (only for alarm type:
A3non, A3nof, A3_on, A3_of
Bit 13 – „1” – alarm indication in phase L2 (only for alarm type: A3non,
A3nof, A3_on, A3_of
Bit 12 – „1” – alarm indication in phase L1 (only for alarm type: n-on, n-off, on, off)
Bit 11 – „1” – capacitive 3L maximum
Bit 10 – „1” – capacitive 3L minimum
Bit 9 – „1” – capacitive 3L
Bit 8 – „1” – capacitive L3 maximum
Bit 7 – „1” – capacitive L3 minimum
Bit 6 – „1” – capacitive L3
Bit 5 – „1” – capacitive L2 maximum
Bit 4 – „1” – capacitive L2 minimum
Bit 3 – „1” – capacitive L2
Bit 2 – „1” – capacitive L1 maximum
Bit 1 – „1” – capacitive L1 minimum
Bit 0 – „1” – capacitive L1
Configuration register of displayed parameters of standard values
(address 4054, R/W):
Bit 15 ...13 – reserved Bit 6 – „1” – displaying of capacitive passive energy
Bit 12 – „1” – displaying of the date
Bit 11 – „1” – displaying of the cosine j values
Bit 10 – „1” – displaying of active exported harmonic energy/ value of current harmonic
Bit 9 – „1” – displaying of active imported harmonic energy/ value of voltage harmonic
Bit 8 – „1” – displaying of THD current/ value of current harmonic
Bit 7 – „1” – displaying of THD voltage/ value of voltage harmonic
Bit 5 – „1” – displaying of inductive passive energy
Bit 4 – „1” – displaying of exported active energy
Bit 3 – „1” – displaying of imported active energy
Bit 2 – „1” – displaying of tg
Bit 1 – „1” – displaying of PF
Bit 0 – „1” – displaying of phase-tophase voltages
49
Configuration register of displayed parameters of standard values 2
(address 4056, R/W):
Bit 15 ...6 – reserved
Bit 5 – „1” – displaying of power ∑P,
∑Q, ∑S
Bit 4 – „1” – displaying of phase apparent powers
Bit 3 – „1” – displaying of phase reactive powers
Bit 2 – „1” – displaying of phase active powers
Bit 1 – „1” – displaying of phase currents
Bit 0 – „1” – displaying of phase voltages
Configuration register of displayed parameters of average values
(address 4055, R/W):
Bit 15 ...14 – reserved
Bit 13 – „1” – displaying of mean
THD of current
Bit 12 – „1” – displaying of mean
THD of voltage
Bit 5 – „1” – displaying of time
Bit 4 – „1” – displaying of average cosine j
Bit 3 – „1” – displaying of average active power
Bit 11 – „1” – displaying of power ∑S Bit 2 – „1” – displaying of average tg
Bit 10 – „1” – displaying of power
∑Q
Bit 1 – „1” – displaying of average PF
Bit 9 – „1” – displaying of power ∑P Bit 0 – „1” – displaying of current in neutral wire
Bit 8 – „1” – displaying of average current
Bit 7 – „1” – displaying of ordered power consumption
Bit 6 – „1” – displaying of frequency
50
Table 12
6000/7000 7500 R Voltage of phase L1 V
6002/7002 7501 R Current in phase L1 A
6004/7004 7502 R Active power of phase L1 W
6006/7006 7503 R Reactive power of phase L1 var
6008/7008 7504 R Apparent power of phase L1 VA
6010/7010 7505 R Power factor (PF) of phase L1 -
6012/7012 7506 R Tg j factor of phase L1
-
6014/7014 7507 R Voltage of phase L2
6016/7016 7508 R Current in phase L2
V
A
6018/7018 7509 R Active power of phase L2 W
6020/7020 7510 R Reactive power of phase L2 var
6022/7022 7511 R Apparent power of phase L2 VA
6024/7024 7512 R Power factor (PF) of phase L2 -
6026/7026 7513 R Tg j factor of phase L2 -
6028/7028 7514 R Voltage of phase L3
6030/7030 7515 R Current in phase L3
V
A
6032/7032 7516 R Active power of phase L3 W
6034/7034 7517 R Reactive power of phase L3 var
6036/7036 7518 R Apparent power of phase L3 VA
6038/7038 7519 R Power factor (PF) of phase L3 -
6040/7040 7520 R Tg j factor of phase L3
x x x
√ x x x x
√ x x x x x x x x x x x
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√ x x x x x x x x x x x x x x
√
√
√
√
√
√
√
51
6042/7042 7521 R Mean 3-phase voltage
6044/7044 7522 R Mean 3-phase current
V
A
6046/7046 7523 R 3-phase active power
(P1+P2+P3)
W
√
6048/7048 7524 R 3-phase reactive power
(Q1+Q2+Q3)
6050/7050 7525 R 3-phase apparent power
(S1+S2+S3) var
VA
√
√
6052/7052 7526 R Mean power factor (PF)
6054/7054 7527 R Mean Tg j factor of phase L1 -
-
6056/7056
6058/7058
7528
7529
R
R
Frequency
Phase-to-phase voltage L1-2
Hz
V
6060/7060 7530 R Phase-to-phase voltage L2-3 V
6062/7062
6064/7064 7532 R Mean phase-to-phase voltage
6066/7066 7533 R 3-phase 15, 30, 60 minutes’ active Power (P1 + P2 + P3)
V
W
6068/7068
6074/7074
6076/7076
6078/7078
7531
7534
7537
7538
7539
R
R
R
R
R
Phase-to-phase voltage L3-1
Harmonic U1 / THD U1
6070/7070 7535 R HarmonicU2 / THD U2
6072/7072 7536 R Harmonic U3 / THD U3
Harmonic I1 / THD I1
Harmonic I2 / THD I2
Harmonic I3 / THD I3
6080/7080 7540 R Cosinus of angle between
U1 and I1
V
√
√
√
√
√
√
V / %
√
V / %
√
V / % √
A / %
√
-
A / %
√
A / %
√
√
-
√
6082/7082 7541 R Cosinus of angle between
U2 and I2
6084/7084 7542 R Cosinus of angle between
U3 and I3
-
√
√
√
√
√
√
√
√
√
√
√
√
√
√ x x x x x x x x x x
√
√
√
52
x x
√ x x
√ x x x x x x x x x x x
√ x x x x
6086/7086 7543 R 3-phase mean cosinus -
6088/7088 7544 R Angle between U1 and I1
°
6090/7090 7545 R Angle between U2 i I2
°
°
6092/7092 7546 R Angle between U3 i I3
6094/7094 7547 R Current in neutral wire
(calculated from vectors)
A
√
√
√
√
√
6096/7096 7548 R Imported 3-phase active energy (number of overflows in register 7549, reset after exceeding 99999999.9 kWh)
100
MWh
√
6098/7098 7549 R Imported 3-phase active energy ( counter totting up to 99999.9 kWh) kWh
√
6100/7100 7550 R Exported 3-phase active energy (number of overflows in register 7551, reset after exceeding 99999999.9 kWh)
100
MWh
√
6102/7102 7551 R Exported 3-phase active energy (counter totting up to 99999.9 kWh) kWh
√
6104/7104 7552 R 3-phase reactive inductive energy (number of overflows in register 7553, reset after exceeding 99999999.9 kVarh)
100
Mvarh
6106/7106 7553 R 3-phase reactive inductive energy ( counter totting up to 99999.9 kVarh)
√ kvarh √
√
6108/7108 7554 R 3-phase reactive capacitive energy (number of overflows in register 7555, reset after exceeding 99999999.9 kVarh)
100
Mvarh
√
√
√
√
√
√
√
√ x x x x
P1
P1
P1
Q1
Q1
Q1 x x x x
√
P1
53
6110/7110 7555 R 3-phase reactive capacitive energy ( counter totting up to 99999.9 kVarh)
6112/7112 7556 R Imported 3-phase active harmonic energy (number of overflows in register
7557, reset after exceeding
99999999.9 kWh)
6114/7114 7557 R Imported 3-phase active harmonic energy (counter totting up to 99999.9 kWh) kvarh
100
MWh kWh
6116/7116 7558 R Exported 3-phase active harmonic energy (number of overflows in register
7559, reset after exceeding
99999999.9 kWh)
6118/7118 7559 R Exported 3-phase active harmonic energy ( counter totting up to 99999.9 kWh)
6120/7120 7560 R Time – hours, minutes -
100
MWh kWh
6122/7122 7561 R Time – month, day
6124/7124 7562 R Time – year
6126/7126 7563 R Analog output value
6128/7128 7564 R Voltage L1 min
6130/7130 7565 R Voltage L1 max
6132/7132 7566 R Voltage L2 min
6134/7134 7567 R Voltage L2 max
6136/7136 7568 R Voltagee L3 min
6138/7138 7569 R Voltage L3 max
6140/7140 7570 R Current L1 min
6142/7142 7571 R CurrentL1 max
A
A
V
V
V
V
V
-
mA
V
54
√ √
√ x
√ x
√ x
√ x x x x x x x
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
Q1 x x x x
√
√
√
√
√
√ x
√
√ x x x
6144/7144 7572 R Current L2 min
6146/7146 7573 R Current L2 max
6148/7148 7574 R Current L3 min
6150/7150 7575 R Current L3 max
6152/7152 7576 R Active power L1 min
6154/7154 7577 R Active power L1 max
6156/7156 7578 R Active power L2 min
6158/7158 7579 R Active power L2 max
6160/7160 7580 R Active power L3 min
6162/7162 7581 R Active power L3 max
6162/7164 7582 R Reactive power L1 min
6166/7166 7583 R Reactive power L1 max
6168/7168 7584 R Reactive power L2 min
6170/7170 7585 R Reactive power L2 max
6172/7172 7586 R Reactive power L3 min
6174/7174 7587 R Reactive power L3 max
6176/7176 7588 R Apparent power L1 min
6178/7178 7589 R Apparent power L1 max
6180/7180 7590 R Apparent power L2 min
6182/7182 7591 R Apparent power L2 max
6184/7184 7592 R Apparent power L3 min
VA
VA
6186/7186 7593 R Apparent power L3 max
6188/7188 7594 R Power factor (PF)of phase L1 min -
VA
VA
VA
VA
6190/7190 7595 R Power factor (PF) of phase L1 max -
6192/7192 7596 R Power factor (PF) of phase L2 min -
6194/7194 7597 R Power factor (PF) of phase L2 max -
6196/7196 7598 R Power factor (PF) of phase L3 min -
6198/7198 7599 R Power factor (PF) of phase L3 max var var var var var var
W
W
W
A
A
W
A
A
W
W
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√ x x x x x x x x x x x x x x x x x x x x x x x x
√
√
√
√ x x
√
√ x x x
√
√ x x x x x
√
√ x x x x
√
√ x x x x x x
55
6200/7200 7600 R Tg j factor of phase L1 min -
6202/7202 7601 R Tg j factor of phase L1 max
6204/7204 7602 R Tg j factor of phase L2 min -
-
6206/7206 7603 R Tg j factor of phase L2 max
6208/7208 7604 R Tg j factor of phase L3 min -
6210/7210 7605 R Tg j factor of phase L3 max
-
-
V 6212/7212 7606 R Phase-to-phase voltage
L1-2 min
6214/7214 7607 R Phase-to-phase voltage
L1-2 max
V
6216/7216 7608 R Phase-to-phase voltage
L2-3 min
6218/7218 7609 R Phase-to-phase voltage
L2-3 max
6220/7220 7610 R Phase-to-phase voltage
L3-1 min
6222/7222 7611 R Phase-to-phase voltage
L3-1 max
V
V
V
V
6224/7224 7612 R Mean 3-phase voltage min V
6226/7226 7613 R Mean 3-phase voltage max V
6228/7228 7614 R Mean 3-phase current min A
6230/7230 7615 R Mean 3-phase current max A
6232/7232 7616 R 3-phase active power min W
6234/7234 7617 R 3-phase active power max W
6236/7236 7618 R 3-phase reactive power min var
6238/7238 7619 R 3-phase reactive power max var
6240/7240 7620 R 3-phase apparent power min VA
√ √
√ √
√ √
√ √
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√ x x
√
√ x x
√
√ x x
√ √
√ √ x x x x x x x x x x x x x x x x x x x
√
√
56
6242/7242 7621 R 3-phase apparent power max VA
√
6242/7244 7622 R Mean power factor (PF) min -
√
6246/7246 7623 R Mean power factor (PF) max -
6248/7248 7624 R Mean Tg j factor min
-
6250/7250 7625 R Mean Tg j factor max -
√
√
6252/7252 7626 R Frequency min Hz
6254/7254 7627 R Frequency max Hz
√
6256/7256 7628 R Mean phase-to-phase voltage min
V
√
6258/7258 7629 R Mean phase-to-phase voltage max
V
√
6260/7260 7630 R Mean active power min
6262/7262 7631 R Mean reactive power max
W
W
√
√
6264/7264 7632 R Harmonic U1 / THD U1 min V / %
√
6266/7266 7633 R Harmonic U1 / THD U1 max V / %
√
6268/7268 7634 R Harmonic U2 / THD U2 min V / %
√
6270/7270 7635 R Harmonic U2 / THD U2 max V / %
√
6272/7272 7636 R Harmonic U3 / THD U3 min V / %
√
6274/7274 7637 R Harmonic U3 / THD U3 max V / % √
6276/7276 7638 R Harmonic I1 / THD I1 min A / %
√
6278/7278 7639 R Harmonic I1 / THD I1 max A / %
√
6280/7280 7640 R Harmonic I2 / THD I2 min A / %
√
6282/7282 7641 R Harmonic I2 / THD I2 max A / %
√
6284/7284 7642 R Harmonic I3 / THD I3 min A / % √
6286/7286 7643 R Harmonic I3 / THD I3 max A / %
√
6288/7288 7644 R Cosinus of angle between
U1 i I1 min
-
√
√
√
√
√
√
√
√
√
√
√
√ x x x x x x
√
√ x x x x x x x x x x
√
√ x x x x x x
√
√ x x
√
√
√
√ x x x x
√
57
6290/7290 7645 R Cosinus of angle between
U1 i I1 max
6292/7292 7646 R Cosinus of angle between
U2 i I2 min
6294/7294 7647 R Cosinus of angle between
U2 i I2 max
6296/7296 7648 R Cosinus of angle between
U3 i I3 min
-
-
-
6298/7298 7649 R Cosinus of angle between
U3 i I3 max
6300/7300 7650 R Mean 3-phase cos min
-
-
6302/7302 7651 R Mean 3-phase cos max -
6304/7304 7652 R Angle between U1 i I1 min
°
6306/7306 7653 R Angle between U1 i I1 max
°
6308/7308 7654 R Angle between U2 i I2 min °
6310/7310 7655 R Angle between U2 i I2 max
°
6312/7312 7656 R Angle between U3 i I3 min
°
6314/7314 7657 R Anlgle between U3 i I3 max
°
6316/7316 7658 R Current in neutral wire min A
6318/7318 7659 R Current in neutral wire max A
6320/7800 7660 R U1 – harmonic 2 %
… … … … …
6358/7838 7679 R U1 - harmonic 21
6360/7840 7680 R U2 - harmonic 2
… … … …
6398/7878 7699 R U2 - harmonic 21
6400/7880 7700 R U3 - harmonic 2
… … … …
6438/7918 7719 R U3 - harmonic 21
%
%
…
%
%
…
%
58
√ x
√ x
√ x
√ x
√
√
√
√
√
√
√
√
√
√
√
√ x x x x x x x x x x
√
√
√ x x x x x x
√ x x x
√ x x x
√
√
√ x x
√ x
√
√ x x x x
√ x x
6440/7920 7720 R I1 - harmonic 2
… … … …
6478/7958 7739 R I1 - harmonic 21
6480/7960 7740 R I 2 – h a r m o n i c 2
… … … … …
6518/7998 7759 R I2 - harmonic 21
6520/8000 7760 R I3 - harmonic 2
… … … …
6558/8038 7779 R I3 - harmonic 21 %
6560/8040 7780 R Consumed ordered power %
%
%
…
6562/8042 7781 R 3-phase harmonic U/THD U V/%
6564/8044 7782 R 3-phase harmonic I/THD I A/%
6566/8046 7783 R
3-phase harmonic U/THD U min
V/%
6568/8048 7784 R
3-phase harmonic U/THD U max
V/%
6570/8050 7785 R 3-phase harmonic I/THD I min A/%
6572/8052 7786 R 3-phase harmonic I/THD I max A/%
%
%
%
…
√ x
√
√
√
√
√ x x x x x x
√ x x x x x
P1 x x x x x x x x x x x
√
√
√
√
√
√
√
√
In case of a lower exceeding the value -1e20 is written in, however after an upper exceeding or error occurrence, the value 1e20 is written.
59
9. ERROR CODES
During the meter operation, messages about errors can occur. Reasons of errors are presented below.
Err1
-when the voltage or current is too small when measuring:
- PFi, tg ji, cos, THD, harmonic below 10% Un,
- PFi, tg ji, cos, below 1% In,
- THD, harmonic below 10% In ,
- f
- I
(N)
,
below 10% Un,
below 10% In;
bAd Freq - When measuring harmonics and THD, if the frequency value is beyond the interval 48 – 52 Hz for 50Hz and
58 – 62 for 60 Hz;
Err bat
is displayed when the battery of the internal RTC clock is used up. The measurement is carried out after switching the supply on and every day at midnight.
One can disable the message by the pushbutton. The disabled message remains inactive till the renewed switching of the meter on.
Err CAL, Err EE
- are displayed when the meter memory is damaged.
The meter must be sent to the manufacturer.
Err PAr
- are displayed when operating parameters in the meter are incorrect. One must restore manufacturer’s parameters (from the menu level or through RS-485).
One can disable the message by the button.
push-
Err Enrg
- are displayed when energy values in the meter are incorrect.
One can disable the message by the pushbutton. Incorrect energy values are reset.
60
Err L2 L3
error of phase sequence, one must interchange the
connection of phase 2 and phase 3. One can disable the message by the push-button. Each time you power up, the message will be displayed again.
____or _____
- lower overflow. The measured value is smaller than the lower measuring quantity range.
---- or ----- upper overflow. The measured value is higher than the upper measuring quantity range or measurement error.
61
10. TECHNICAL DATA
Measured value
Current In
1 A
5 A
Voltage L-N
57.7 V
230 V
Voltage L-L
100 V
400 V
Frequency
Active power
Reactive power
Apparent power
Power factor PF
Tangent j factor
Cosinus j j
Imported active energy
Exported active energy
Reactive inductive energy
Reactive capacitive energy
Indication range*
0.00 ... 12 kA
0.00 ... 60 kA
0.0 ... 280 kV
0.0 ... 1.104 MV
Measuring range
0.002 ... 1.200 A~
0.010 ... 6.000 A~
2.8 ... 70.0 V~
11.5 ... 276 V~
0.0 ... 480 kV
0.0 ... 1.92 MV
47.0 .. 63.0 Hz
5 ... 120 V~
20 ... 480 V~
47.0...63.0 Hz
-9999 MW .. 0.00 W
.. 9999 MW
-9999 Mvar .. 0.00 var ... 9999 Mvar
-1.65 kW...1.4
W...1.65 kW
-1.65 kvar...1.4 var...1.65 kvar
0.00 VA .. 9999 MVA 1.4 VA...1.65 kVA
-1 .. 0.. 1
-10.2...0...10.2
-1... 1
-180 ... 180
0 .. 99 999 999.9 kWh
0 .. 99 999 999,9 kWh
0 .. 99 999 999.9 kvarh
0 .. 99 999 999.9 kvarh
-1...0...1
-1.2...0...1.2
-1... 1
-180 ... 180
0 .. 100% 0 .. 100%
L1 L2 L3
S l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l
Basic error
±0.2% r
±0.2% r
±0.5% r
±0.2%mv
±0.5% r
±0.5% r
±0.5% r
±1% r
±1% r
±1% r
±0.5% r
±0.5% r
±0.5% r
±0,5%
±0,5%
THD l l l
±5%
* Depending on the set tr_U ratio (ratio of the voltage transformer: 0.1...4000.0)
and tr_I ratio (ratio of the current transformer: 1...10000) r - of the range mv - of the measured value
Caution! For the correct current measurement the presence of a voltage higher than 0.05 Un is required at least in one of the phase
62
Power input:
- in supply circuit
- in voltage circuit
- in current circuit
Display field:
Realay output:
6 VA
0.05 VA
0.05 VA dedicated display LCD 3.5’’ relay, voltageless NO contacts load capacity 250 V~/ 0.5 A ~
Analog output: current load resistance 250 W resolution 0.01 % of the range basic error 0.2%
Serial interface RS-485: address 1...247; response time: 600 ms mode: 8N2,8E1, 8O1,8N1;
baud rate: 4.8, 9.6, 19.2, 38.4 kbit/s transmission protocol: Modbus RTU
Energy impulse output output of OC type (NPN), passive of class A , acc.to EN 62053-31 supply voltage18 .. 27 V, current 10 .. 27 mA
Constant of OC type
output impulse: 1000 - 20000 imp./kWh independently of set tr_U, tr_I ratios
Protection grade ensured by the casing:
- from frontal side
- from terminal side
IP 65
IP 20
Weight
Overall dimensions
0.3 kg
96 x 96 x 77 mm
63
Reference and rated operating conditions
- supply voltage 85..253 V a.c. (40...400) Hz or
90..300 V d.c.
20..40 V a.c. (40...400) Hz or
20..60 V d.c.
- input signal: 0...0.002...1.2 I n
; 0.05...1.2 U n for current, voltage
0...0.002...1.2 I n
; 0...0.1...1.2 U n for power factors Pf i
,t j i
frequency sinusoidal (THD 8%)
- power factor
- ambient temperature
-1...0...1
-25...23...+55°C
- storage temperature
- relative humidity
-30...+70°C
25...95% (condensation inadmissible)
- admissible peak factor:
- current intensity
- voltage
- external magnetic field
2
2
0...40...400 A/m
- short duration overload (5 s)
- voltage inputs
- current inputs
- operating position
- preheating time
2 Un (max.1000 V)
10 In any
5 min.
Battery of the real time clock: CR2032
Additional errors:
in % of the basic error
- from frequency of input signals < 50%
- from ambient temperature changes < 50%/10°C
- for THD > 8% < 100%
64
Standards fulfilled by the meter:
Electromagnetic compatibility:
- noise immunity acc. to EN 61000-6-2
- noise emissions acc. to EN 61000-6-4
Safety requirements:
according to EN 61010 -1 standard l isolation between circuits: basic l installation category: III l pollution level: 2 l maximum phase-to-earth voltage:
- for supply and measuring circuits 300 V
- for remaining circuits 50 V l altitude above sea level: < 2000 m.
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11. ORDERING CODES
Table 14
Meter of network parameters ND20 - X X X X XX X X
Current input In:
1 A (X/1)
5 A (X/5)
Voltage input (phase/phase-to-phase) Un:
3 x 57.7/100 V
3 x 230/400 V
1
2
1
2
Analog current output:
without analog output with programmable output 0(4) ... 20 mA
Supply voltage:
85..253 V a.c., 90..300 V d.c.
20..40 V a.c., 20..60 V d.c.
0
1
1
2
Kind of version:
standard
00
XX
custom-made*
Language:
English other
U
X
Acceptance tests:
without extra quality requirements with an extra quality inspection certificate acc. to customer’s requirements*
0
1
X
* - After agreeing with the manufacturer.
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Example of Order:
When ordering please respect successive code numbers.
The code: ND20- 2-2-1-1- 00- U-1 means:
ND20
– meter of network parameters of ND20 type
2 – current input In : 5 A (x/5),
2
– input voltage (phase/phase-to-phase) Un = 3 x 230/400 V,
1
– with programmable analog output,
1
– supply voltage: 85...253 V a.c., 90..300 V d.c.
00 – standard version
U
– all descriptions and user’s manual in English,
1
– with an extra quality inspection certificate.
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11. MAINTENANCE AND GUARANTEE
The ND20 meter does not require any periodical maintenance.In case of some incorrect operations:
After the dispatch date and in the period stated in the guarantee card:
One should return the instrument to the Manufacturer’s Quality Inspection Dept.
If the instrument has been used in compliance with the instructions, we guarantee to repair it free of charge.
The disassembling of the housing causes the cancellation of the granted guarantee.
After the guarantee period:
One should turn over the instrument to repair it in a certified service workshop.
Our policy is one of continuous improvement and we reserve the right to make changes in design and specifications of any products as engineering advances or necessity requires and to revise the above specifications without notice.
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Contact
ND20 METER OF NETWORK PARAMETERS
Sifam Tinsley Instrumentation Ltd
1 Warner Drive
Springwood Industrial Estate
Braintree, Essex
CM7 2YW
www.sifamtinsley.co.uk
E-mail: [email protected]
MULTIFUNCTION METER

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Key features
- Measures voltage, current, power, and energy
- Supports single and three-phase networks
- LCD display for simultaneous readings
- RS-485 interface
- Pulse and relay outputs
- Calculates harmonic values (THD)