P Q M - P ow e r Q u a lit y M o n it o r in g

P Q M - P ow e r Q u a lit y M o n it o r in g
PQM - Power Quality Monitoring
UMG 96S
The little
field bus giant
Universal flush-mounting measuring instruments of the UMG 96S product family are mainly
designed for use in low and medium voltage distribution systems. Due to the large number of
available measurement values in an extremely compact measuring unit, a number of analogue
measurement instruments can be replaced. Additional functions such as the measurement of
harmonics, the recording of minimum and maximum values, digital and analogue I/Os, the
operating hour meter, the bi-metallic strip function, password protection and many more offer an
effective tool for fault analysis and for monitoring power quality. The interface and field bus
features (Modbus, Profibus, M-bus) enable communication of the measurement data and incorporation into extensive energy management systems.
Areas of application
Display and control of electrical parameters in energy distribution systems
Cost centre data collection
Limit value monitoring (e. g. over voltage, energy consumption)
Monitoring of harmonics
Measurement value generator for central building control systems or PLC
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Chapter 2
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Universal measurement instruments
UMG 96S with interface and field bus
Entry level in intelligent
energy management systems
The use of energy measurement technology in energy distribution
has moved dynamically towards digital universal measuring instruments in the past few years. The advantages are obvious: lower equipment costs for more information and functionality.
In addition, digital measuring technology is more accurate even all
along the entire lifespan. Clear cost advantages also result from the
construction of the cabinet which results in lower installation costs
and less wiring efforts in comparison to analogue measuring technology.
Main features
RS232, RS485 interface
Field buses: Modbus, Profibus, M-bus
Harmonics display
Digital I/O and analogue outputs
Integrated logic for alarm signals
High reliability and long lifespan
Applications
The UMG 96S is a measurement instrument which is suitable for
measuring, recording and monitoring electrical parameters (TrueRMS) in low and medium voltage networks.
The measurement is suitable for 1 and 3-phase systems with a
neutral conductor in low and medium voltage networks. One of
the characteristics of this measurement instrument is the compact
construction (96x96 mm) and the measurement of harmonic currents and voltages in each conductor.
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In order to achieve functional diversity of the universal measurement instrument, you would need around 15 analogue
units such as an ampere meter, volt meter, volt meter switch,
power meter (kW, kVA, kvar, cos ϕ), an effective and reactive energy meter (kWh/kvarh), a harmonic analyser and a
measurement converter. This means that the planning,
installation, wiring and storage costs are significantly reduced for the UMG 96S in comparison to analogue measuring instruments.
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Universal measuring instruments of the UMG 96S product family are mainly designed for use in low and medium voltage distribution systems. In addition to the large quantity of electrical measurement values, this series also offers a number of additional functions such as the recording of minimum and maximum values, the operating hour meter, the bi-metallic strip function, password
protection and lots more. The possibility for communication through various field buses enables incorporation in more complex
energy management systems as well as the connection to PLC controls or central building control systems. Integrated harmonics
analysis becomes more significant with increasing network pollution (increasing THD-U values).
UMG 96S
Data storage / memory
Up to 160,000 measurement values or events can be stored in the onboard memory (option). Four predefined profiles can be used for
the storage of measurement values and events. Each of these profiles can be selected individually or together with other profiles.
The basic UMG 96S without memory and clock only stores the consumption (overall) and minimum/maximum values (without time
stamp).
Measurement value displays and automatic display rotation
The measurement values are calculated once per second and can be called up in the measurement value displays. Two methods are
available for calling up the measurement values:
• An automatically changing presentation of selected measurement value displays with a settable change over time of 0...60 seconds
• The selection of the measurement value display using the keys for a preselected display profile.
There are four display profiles available and each profile can be configured using the PC, specific to the customer needs, and be transferred to the unit.
Anzeigenbeispiele
Rotary field display
THD L3 highest value
Programming
Current transformer
Real energy
LCD contrast
The contrast of the LCD display can be adapted by the user. In order to achieve the optimum contrast throughout the full operating
temperature range, an automatic contrast setting takes place using the measured inside temperature.
Operating hour meter
The operating hour meter measures the time (6 minute intervals) after the unit is ready for operation and cannot be reset. In addition, 6
overall runtimes can be programmed using the 6 comparator systems and the overall runtime is recorded using the comparator system result.
The measurement values, limits and operands (>=<) are available as parameters. The overall runtimes can also be individually reset.
Modbus /
Profibus
Harmonics
Memory
Analogue outputs
Digital I/O
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Chapter 2
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Universal measurement instruments
Industrial data communications – interface and field bus
In order to process and analyse the large quantities of generated data, the data are transferred using corresponding communication
means and are centrally collected. The incorporation of the UMG 96S in more complex management systems and the connection to
PLC controls or central building control systems is also possible. The UMG 96S thereby provides various interfaces (RS232, RS485, Mbus) and protocols for the configuration of the most common field buses (Modbus, Profibus, M-bus). The UMG 96S is characterised
by its reliable communication and very high transfer rate.
Analogue outputs
The product variants with analogue outputs can either be configured as analogue outputs, pulse outputs or switch outputs. The following
parameters are available to each analogue output: measurement value, scale start value (4mA) and the scale end value (20mA).
Digital inputs/outputs
The digital outputs can be used as pulse outputs (max. 10 Hz) for the effective and reactive energy consumption or as switch outputs. The digital outputs can be programmed in order to monitor the measurement data. Up to 3 comparators (A, B, C) can be allocated
to each digital output and the result is conducted to the digital output. The comparator result can also be written from externally through
the RTU Modbus. The switch outputs can also be set through the Profibus remote.
Integrated logic
Comparator A
Comparator B
Comparator C
Link of results of comparators A, B and C
Limit value monitoring
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UMG 96S
Networks
TN and TT networks
1- and 4-phase networks
Interfaces
RS 232
RS 485
M-bus
2 digital IOs
Communication
Modbus RTU
Profibus DPVO
M-bus
Measurement accuracy
Class 1
Current: 0.5%
Voltage: 0.5%
Pulse outputs
Signal input logic
Status monitoring
Alarm report
HT/LT changeover
Switch output
Limit value output
Memory (optional)
512 kByte
160 000 measurement values
Power quality
THD-I
THD-U
Harmonics 1...15
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Chapter 2
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Product variants and technical data
Overview of product variants (transfer rates: Modbus 9.6, 19.2, 38.4kBit/s; Profibus 9.6, 19.2, 93.75, 187.5, 500 kBit/s and 1.5 MBit/s)
Profibus interface (DP V0)*4
M-bus*4
Auxiliary voltage: 24V DC
300V standard version
Measurement range: L-N 50 - 300V; AC*3
Measurement range: L-L 87 .. 520V; AC
150V special version
Measurement range: L-N 25 - 150V; AC
Measurement range: L-L 40 .. 250V; AC
L-N: 85 .. 300V, AC
52.13.001
L-N: 85 .. 300V, AC
52.13.005
52.13.009
Item number
Operating voltage
Clock / memory
RS232 (Modbus RTU)
2 analogue outputs 4-20mA
RS485 (Modbus RTU)
2 digital inputs
Selectable
activation*2
2 digital outputs
Selectable
activation*1
L-N: 85 .. 300V, AC
L-N: 85 .. 300V, AC
52.13.013
52.13.017
L-N: 85 .. 300V, AC
L-N: 85 .. 300V, AC
52.13.021
52.13.025
52.13.040
L-N: 140 .. 300V, AC
L-N: 140 .. 300V, AC
18 .. 70V DC, 18 .. 33V, AC
52.13.029
L-L: 85 .. 260V, AC
52.13.002
L-L: 85 .. 260V, AC
52.13.006
52.13.010
auxiliary voltage
L-L: 85 .. 260V, AC
L-L: 85 .. 260V, AC
52.13.014
52.13.018
L-L: 85 .. 260V, AC
L-L: 85 .. 260V, AC
52.13.022
L-L: 85 .. 260V, AC
52.13.026
18 .. 70V DC, 18 .. 33V, AC
auxiliary voltage
52.13.031
= Included = Not included
*1 - combination options for inputs and outputs: a) 2 digital outputs, b) 2 digital inputs, c) 2 analogue outputs, d) 1 digital output and 1 analogue output, e) 1 digital output and 1 digital input.
*2 - the RS232 interface cannot be simultaneously operated with the RS485 interface.
*3 - auxiliary range for units with Profibus: 140V...300V AC. Also available: special version with operating voltage: L-N: 25...140V, L-L: 85...260VAC
*4 - these units are only suitable for applications in industrial areas.
General technical data
Operating voltage L-N, AC
Refer to order details
Overvoltage category
300V CAT III, 600V CAT II
Quadrants
Scanning rate 6 channel
4
Per channel
250g
Dimensions
W= 96mm x H= 96mm x D= 49mm
Mounting
Front panel installation
Working temperature
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2.5 / 3 kHz
Weight
-10…55 °C
Connectable conductors (U/I)
Single wire, multi-wire, fine-wire,
pin cable lugs, ferrule
0.08 - 2.5mm2
Protection class (front/reverse)
According to EN60529
IP 50/20
1.5mm2
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UMG 96S
Measurement range
Voltage L-N, AC (without voltage transformer)
Refer to order details
Voltage L-L, AC (without voltage transformer)
Refer to order details
Current ( transformer: x/1 and x/5A)
0.01...6A
Frequency of mains
45...65Hz
Grid types
TN,TT
Measurement in single phase/multiphase networks
1ph, 2ph, 3ph and up to 3 x 1ph
Measurement values
Measurement
parameter
Display range
Measurement range L1 L2 L3 Sum Lowest Average Maximum
value
value *1 value
at scaling factor 1
Measurement
accuracy
Current
0.01 .. 60.0 kA
0.01 .. 6 A
+-0.5 % rng
Current calculated in N
0.01 .. 180.0 kA
0.01 .. 18 A
+-1.5 % rng
Voltage L-N
0.0 .. 34 kV
50 .. 300 V
+-0.5 % rng
Voltage L-L
0.0 .. 60 kV
87 .. 520 V
+-1.0 % rng
Frequency (U)
45.00 .. 65.00 Hz
45.00 .. 65.00 Hz
+-0.1 % rdg
+-1.0 % rng
Effective power per phase
0.1 W .. 99.9 MW
0.1 W .. 1.8 kW
Apparent power per phase
0.1 VA .. 99.9 MVA
0.1 VA .. 1.8 kVA
Reactive power per phase
0.1 var .. 99.9 Mvar
0.1 var .. 1.8 kvar
Effective power, sum
1.0 W .. 99.9 MW
1.0 W .. 5.4 kW
+-1.0 % rng
ind.
+-1.0 % rng
+-1.0 % rng
Apparent power, sum
1.0 VA .. 99.9 MVA
1.0 VA .. 5.4 kVA
Reactive power, sum
1.0 var .. 99.9 Mvar
1.0 var .. 5.4 kvar
+-1.0 % rng
Cos phi
0.00 kap. .. 1.00 .. 0.00 ind. 0.00 kap. .. 1.00 .. 0.00 ind.
+-1.0 degree
Effective energy, consumed
0 .. 999.999.999 kWh
Class 1(5A) 2 (1A)
Reactive energy, inductive
0 .. 999.999.999 kvarh
Class 1(5A) 2 (1A)
Operating hour meter
0 .. 999.999.999 h
+-2 min per day
ind.
+-1.0 % rng
rng: of measurement range, rdg: of measurement value
*1 integration over time: 5, 10, 30, 60, 300, 480, 600 and 900 seconds
Power quality
Harmonics, 1st to 15th harmonics,
uneven
Current, voltage L1, L2, L3
Accuracy: ± 2% rng
Distortion factor THD-U in %
L1, L2, L3
Accuracy: ± 2% rng
Distortion factor THD-I in %
L1, L2, L3
Accuracy: ± 2% rng
Recorder for threshold events
Yes, for units with memory
Measurement accuracy
Accuracy V, A
± 0.5 % rng
Reactive energy (karh)
Class
1 (5A) 2 (1A)
Effective energy (kWh)
Class
1 (5A) 2 (1A)
Periphery
Digital inputs
As a status input or pulse input
2, refer to order details
Digital outputs
As a switch output or pulse output
2
Analogue outputs
4...20mA
2, refer to order details
Password protection
Software GridVis
Yes
Refer to chapter 5
Yes
Communication
Interfaces
RS 232
9.6, 19.2, 38.4 kbps; RJ11
Refer to order details
RS 485
9.6, 19.2, 38.4 kbps; terminal strip
Refer to order details
M-bus
Plug, sub D 9-pole
Refer to order details
Modbus RTU
9.6, 19.2, 38.4 kbps
Yes
Profibus DP V0
9.6, 19.2, 45.45, 93.75, 187.5, 500, 1500 kbps
Refer to order details
M-bus
0.3, 2.4, 9.6 kbps
Refer to order details
Protocols
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Chapter 2
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UMG 96S
max. 6
Switchboard cut-out
92 x 92mm
DSUB-9
90
96
Dimensional
drawing
Connection illustration
Profibus option
6
All dimensions stated in this drawing
are in mm.
Typical connection options
UMG 96S Profibus with switch inputs, RS 232 and Profibus
51
UMG 96S without option
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42
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