70.11 70.31 70.41
70
SERIES
70 Series - Line monitoring relay
Features
70.11
70.31
70.41
Electronic voltage monitoring relays for
single and three-phase applications
Multifunctional types, providing the flexibility
of monitoring Undervoltage, Overvoltage,
Window Mode, Phase rotation, Phase loss,
Asymmetry and Neutral loss
• Positive safety logic - Make output contact
opens if the relay detects an error
• All functions and values can be easily adjusted
by the selector and trimmer on front face
Single-phase (220...240 V)
• “Blade + cross” – both flat blade and cross
head screw drivers can be used to adjust the voltage monitoring:
regulators and the function selector
• Undervoltage
• Colored LEDs for clear & immediate visual
• Overvoltage
indication
• Window mode (overvoltage
• 1 CO relay output, 6 or 10 A
+ undervoltage)
• Modular housing, 17.5 or 35 mm wide
• Voltage fault memory
• 35 mm rail (EN 60715) mount
selectable
• Cd-free contact material
•
Three-phase (380...415 V)
voltage monitoring:
Three-phase (380...415 V,
with or without neutral)
voltage monitoring:
• Undervoltage
• Window
• Overvoltage
• Window
mode (overvoltage
+ undervoltage)
• Voltage fault memory
selectable
• Phase loss
• Phase rotation
mode (overvoltage
+ undervoltage)
• Phase loss
• Phase rotation
• Asymmetry
• Neutral loss selectable
Screw terminal
E
For outline drawing see page 8
Contact specification
Contact configuration
1 CO (SPDT)
Rated current/Maximum peak current
Rated voltage/Max. switching voltage
A
V AC
1 CO (SPDT)
1 CO (SPDT)
10 / 30
6 / 10
6 / 10
250 / 400
250 / 400
250 / 400
Rated load AC1
VA
2,500
1,500
1,500
Rated load AC15
VA
750
500
500
0.5
0.185
0.185
10 / 0.3 / 0.12
6 / 0.2 / 0.12
6 / 0.2 / 0.12
300 (5 / 5)
500 (12 / 10)
500 (12 / 10)
AgNi
AgNi
AgNi
Nominal system voltage (UN) V AC (50/60 Hz)
220…240
380…415
380…415
Rated power
VA (50 Hz) / W
2.6 / 0.8
11 / 0.9
11 / 0.9
V AC (50/60 Hz)
130…280
220…510
220…510
80 · 103
60 · 103
60 · 103
170…270
300…480
300…480
Single phase motor rating (230 V AC)
Breaking capacity DC1: 30/110/220 V
Minimum switching load
kW
A
mW (V/mA)
Standard contact material
Supply specification
Operating range
Technical data
Electrical life at rated load AC1
cycles
Voltage detection level range
V
Asymmetry detection level range
%
Switch-off delay time (T on function diagrams) s
Switch-on lock-out time
s
Switch-on hysteresis (H on function diagrams) V
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Power-on activation time
s
Insulation between supply and contacts (1.2/50 μs) kV
Dielectric strength between open contacts V AC
Ambient temperature
Protection category
°C
—
—
4...25
0.5...60
0.5...60
0.5...60
0.5
1
1
5 (L-N)
10 (L-L)
10 (L-L)
≈1
≈1
≈1
4
4
4
1,000
1,000
1,000
–20…+60
–20…+60
–20…+60
IP20
IP20
IP20
Approvals (according to type)
1
70
SERIES
70 Series - Line monitoring relay
Features
70.61
70.62
Electronic phase loss and rotation monitoring
relays for three-phase applications
Universal voltage monitoring (UN from 208 V
to 480 V, 50/60 Hz)
• Phase loss monitoring, even under phase
regeneration
• Positive safety logic - Make contact opens if
the relay detects an error
• 2 versions:
1 CO relay output, 6 A (17.5 mm wide), and
Three-phase (208...480 V)
2 CO relay output, 8 A (22.5 mm wide)
voltage monitoring:
• 35 mm rail (EN 60715) mount
• European patent pending for the innovative
• Phase loss
principle at the root of the 3 phase monitoring
• Phase rotation
and error survey system (70.61)
•
Three-phase (208...480 V)
voltage monitoring:
• Phase
• Phase
loss
rotation
Screw terminal
E
For outline drawing see page 8
Contact specification
1 CO (SPDT)
2 CO (DPDT)
6 / 15
8 / 15
250 / 400
250 / 400
1,500
2,000
VA
250
400
kW
0.185
0.3
3 / 0.35 / 0.2
8 / 0.3 / 0.12
500 (10 / 5)
300 (5 / 5)
AgCdO
AgNi
208…480
208...480
Contact configuration
Rated current/Maximum peak current
Rated voltage/Max. switching voltage
Rated load AC1
A
V AC
VA
Rated load AC15
Single phase motor rating (230 V AC)
Breaking capacity DC1: 30/110/220 V
Minimum switching load
A
mW (V/mA)
Standard contact material
Supply specification
Nominal system voltage (UN) V AC (50/60 Hz)
Rated power
Operating range
VA (50 Hz) / W
V AC (50/60 Hz)
8/1
11 / 0.8
170…500
170...520
100 · 103
60 · 103
Electrical life at rated load AC1
cycles
Switch-off delay time
s
0.5
0.5
Switch-on lock-out time
s
0.5
0.5
Power-on activation time
s
<2
<2
Insulation between supply and contacts (1.2/50 μs) kV
5
5
Dielectric strength between open contacts V AC
1,000
1,000
–20…+60
–20...+60
IP20
IP20
Ambient temperature
Protection category
Approvals (according to type)
2
°C
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Technical data
70
SERIES
70 Series - Line monitoring relay
Ordering information
Example: 70 series, three-phase voltage monitoring relay, 1 output, supply voltage 380…415 V AC.
A
7 0 . 3
1 . 8 . 4 0 0 . 2
B
C
D
0
2
2
D: Fault memory option
0 = No fault memory
2 = Fault memory function selectable
Series
Type
1=1
3=3
4=3
6=3
phase
phase
phase
phase
AC line monitoring
AC line monitoring
+ neutral AC line monitoring
loss and rotation monitoring
C: Time delay setting
0 = Fixed switch-off delay
2 = Adjustable switch-off delay
3 = Adjustable switch-off
delay and asymmetry
No. of poles
1 = 1 pole
2 = 2 pole
B: Contact circuit
0 = CO
Supply version
8 = AC (50/60 Hz)
A: Detection values
0 = Non-adjustable detection values
2 = 2 adjustable detection values
Supply voltage
230 = 220…240 V (70.11)
400 = 380…415 V (70.31/41)
400 = 208…480 V (70.61/62)
Codes
70.11.8.230.2022 70.61.8.400.0000
70.31.8.400.2022 70.62.8.400.0000
70.41.8.400.2030
Monitoring and function overview
Supply system type
Nominal voltage 50/60 Hz
Undervoltage with/without memory (selectable)
Overvoltage with/without memory (selectable)
Window Mode with/without memory (selectable)
Window Mode without memory
Phase loss
Phase rotation
Phase asymmetry
Neutral loss (selectable)
70.11
Single phase system
V
220...240
•
•
•
—
—
—
—
—
70.31
3-phase systems
380...415
•
•
•
—
•
•
—
—
70.41
3-phase systems
380...415
—
—
—
•
•
•
•
•
70.61/62
3-phase systems
208...480
—
—
—
—
•
•
—
—
Technical data
Insulation
Between supply and contacts
Between open contacts
EMC specifications
Type of test
Electrostatic discharge
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Radiated electromagnetic field
Fast transients
(burst 5/50 ns, 5 and 100 kHz)
Voltage pulses on supply
terminals (surge 1.2/50 μs)
Radiofrequency common mode
voltage (0.15…230 MHz)
Voltage dips
Short interruptions
Radiofrequency conducted emissions
Radiated emissions
Terminals
Max. wire size
Screw torque
Wire strip length
Other data
Power lost to the environment
70.11/31/41
2,500
4
1,000
1.5
70.61/62
3,000
5
1,000
1.5
contact discharge
air discharge
80 … 1,000 MHz
1 … 2.8 GHz
on supply terminals
Reference standard
EN 61000-4-2
EN 61000-4-2
EN 61000-4-3
EN 61000-4-3
EN 61000-4-4
4 kV
8 kV
10 V/m
5 V/m
4 kV
common mode
differential mode
on supply terminals
EN 61000-4-5
EN 61000-4-5
EN 61000-4-6
4 kV
4 kV
10 V
70 % UN
EN 61000-4-11
EN 61000-4-11
CISPR 11
CISPR 11
solid cable
1x6/2x4
1 x 10 / 2 x 12
dielectric strength
impulse (1.2/50 μs)
dielectric strength
impulse (1.2/50 μs)
V AC
kV
V AC
kV
0.15…30 MHz
30…1,000 MHz
mm2
AWG
Nm
mm
without output current
with rated output current
W
W
70.11
0.8
2
25 cycles
1 cycle
class B
class B
stranded cable
1 x 4 / 2 x 2.5
1 x 12 / 2 x 14
0.8
9
70.31/41
70.61/62
0.9
1
1.2
1.4
3
E
70
SERIES
70 Series - Line monitoring relay
Functions
Output relay On (NO closed) when all OK: positive logic.
Overvoltage (OV and OVm functions)
With memory
Without Memory
Type
70.11
70.31
E
Undervoltage (UV and UVm functions)
If the voltage moves out of limits, following
delay T the output relay turns Off.
When the voltage is again within limits
(± the Switch-on hysteresis H):
- if set in the “without memory” position, the
output relay “recovers”, i.e. it turns On
(after the Switch-on lock-out time) without
any memory of the previous event.
- if set in the “with memory” position
(70.11 and 70.31 only), the output relay
remains open. To reset, it is necessary to
switch the supply Off and then On again,
or to rotate the selector first to an adjacent
position and then to the original position.
With memory
Without Memory
Type
70.11
70.31
Functions
= Output contact (11-14)
OV = Overvoltage
OVm = Overvoltage with memory
UV = Undervoltage
UVm = Undervoltage with memory
W
= Window mode (OV + UV)
Wm = Window mode (OV + UV)
with memory
H
= Hysteresis
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With memory
Without Memory
Type
Window mode (overvoltage + undervoltage, W and Wm functions)
70.11
70.31
70.41
(70.41
without
memory)
4
70 Series - Line monitoring relay
70
SERIES
Functions
Output relay On (NO closed) when all OK: positive logic.
Type
70.31
70.41
70.61
70.62
Phase loss and phase rotation
If the sequence (L1, L2, L3) is incorrect at power-on, the output
relay will not turn-on.
If a phase is lost, the output relay turns off immediately.
When the phase is again active, the output relay turns on
immediately.
For types 70.61 and 70.62:
Phase loss monitoring possible even under regeneration up to
80% of the average of the other 2 phases.
Type
70.41
Neutral loss and asymmetry
Asymmetry
E
If the neutral is lost (and the Neutral control function is set), the
output relay turns off immediately.
When the neutral is again present, the output relay turns on
immediately
If the asymmetry (Umax - Umin)/UN is above the % set value, the
output relay turns off after the set delay T.
When the asymmetry is again below the % set value (with a fixed
hysteresis of approximately 2%), the output relay turns on after
the Switch-on lock-out time.
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Neutral Loss
5
70
SERIES
70 Series - Line monitoring relay
Front view: function selector and regulators
70.11
70.31
70.41
Functions:
OV, OVm, UV,
UVm, W, Wm
Functions:
OV, OVm, UV,
UVm, W, Wm
N = With N-line
monitoring
N = Without N-line
monitoring
Toff delay:
(0.5...60) sec
UMax:
(380...480) V
UMax:
(380...480) V
UMax:
(220...270) V
UMin:
(300...400) V
UMin:
(170...230) V
Toff delay:
(0.5...60) sec
(4...25) % UN
UMin:
(300...400) V
Toff delay:
(0.5...60) sec
LED indication
Monitoring relay
Type
70.11.8.230.2022
LED
Supply system normal
Supply system abnormal
(Voltage out of limits,
switch-off delay
time T running)
Supply system abnormal
(Reason for switch-off,
RESET necessary when ”with Memory”* is selected)
Contact 11 - 14 closed
Contact 11 - 14 closed
Contact 11-14 open
•
Overvoltage OV and OVm
•
Undervoltage UV and UVm
With Memory, following a
failure a manual “RESET”
** is necessary
70.31.8.400.2022
•
Overvoltage OV and OVm
•
Undervoltage UV and UVm
•
Phase loss
Phase rotation
With Memory, following a
failure a manual “RESET”
** is necessary
70.41.8.400.2030
•
Overvoltage OV
•
Undervoltage UV
•
Asymmetry
Phase loss
Neutral loss
Phase rotation
70.61.8.400.0000
•
Phase rotation or
Phase loss
70.62.8.400.0000
•
Phase loss
Phase rotation
* The function “with Memory” is only available for type 70.11 and 70.31.
**It is necessary to switch the supply OFF and then On again (U off U on) or to rotate the function selector first to an adjacent position and then
to the original position.
6
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E
70
SERIES
70 Series - Line monitoring relay
Wiring diagrams
L
L1
L1
L1
L1
N
L2
L3
L2
L3
N
L2
L3
L2
L3
Type 70.11
Type 70.31
Type 70.41
Type 70.61
Type 70.62
E
Application example
The output contact switches the coil of the line contactor.
II-2014, www.findernet.com
L1
L2
L3
N
7
70
SERIES
70 Series - Line monitoring relay
Outline drawings
70.31
Screw terminal
70.41
Screw terminal
70.61
Screw terminal
70.62
Screw terminal
II-2014, www.findernet.com
E
70.11
Screw terminal
8
70
SERIES
70 Series - Line monitoring relay
Accessories
Adaptor for panel mounting, plastic, 17.5 mm wide for 70.11 and 70.61
020.01
Adaptor for panel mounting, plastic, 35 mm wide for 70.31 and 70.41
011.01
Sheet of marker tags, plastic, 72 tags, 6x12 mm for 70.11, 70.31, 70.41 and 70.62
060.72
Sheet of marker tags, plastic, 24 tags, 9x17 mm for 70.61
020.24
Identification tag, plastic, 1 tag, 17x25.5 mm for 70.11, 70.31 and 70.41
019.01
Separator for rail mounting, plastic, 3 mm wide
020.03
020.01
011.01
E
060.72
020.24
019.01
II-2014, www.findernet.com
020.03
9
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