Measuring relays for voltage monitoring

Measuring relays for voltage monitoring

Device and system protection in the event of poor quality of the electrical grid

The DOLD measuring relays for voltage monitoring offer complete voltage protection for overload and underload monitoring in one compact device. The underload and overload relays and voltage monitor (single phase and three phase) protect consumers such as electric motors against overloading caused by underloads and/or protect devices against destruction caused by overloads e.g. generators running in isolated operation with faulty regulation. An important area of use of this measuring relay is the single phase voltage monitoring in control circuits or DC control circuits.

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Catalogue, Monitoring technique, File: pdf, File size 9 MB

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1- / 3-phase

Output contacts

Operate delay

Auxiliary voltage required

Enclosure design

Width

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Undervoltage relay, 3-phase IP 5201/40015

• According IEC/EN 60 255-1, IEC/EN 60947-5-1
• For monitoring 3-phase AC voltages
• Separately adjustable switching voltage for all 3 phases
• With neutral
• Output: 2 changeover contacts
• De-energized on trip
• Width: 70 mm

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Voltage Relay RL 9836

• According to IEC/EN 60 255-1
• For DC monitoring
• Detection of
- Overvoltage
- Untervoltage
- Voltage range excess in single-phase AC voltage systems
• No separate auxiliary necessary
• Output: 1 changeover contact
• De-energized on trip
• Adjustable switching voltage
• Adjustable hysteresis for reset
•...

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Voltage Relay RL 9854

• According to IEC/EN 60 255-1
• For monitoring AC single phase with 50 /60 Hz
• Detection of
- Overvoltage
- Undervoltage
- Voltage range excess in single-phase AC voltage systems
• No separate auxiliary necessary
• Output: changeover contact
• De-Energized on trip
• Adjustable switching voltage
• Adjustable...

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Voltage relay, digital MK 9064N

• AC/DC voltage measuring (single-phase)
• Start up delay, on delay
• Manual reset
• LCD for indication of the measuring values
• Relay output
MK 9064N: 1 changeover contact
MH 9064: 2 x 1 changeover contacts
• Relay function selectable (energized/de-energized on trip)
• As option with plugable terminal blocks for easy...

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Voltage relay, digital MH 9064

• AC/DC voltage measuring (single-phase)
• Start up delay, on delay
• Manual reset
• LCD for indication of the measuring values
• Relay output
MK 9064N: 1 changeover contact
MH 9064: 2 x 1 changeover contacts
• Relay function selectable (energized/de-energized on trip)
• As option with plugable terminal blocks for easy...

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Voltage relay, over-/undervoltage BA 9054

• According to IEC/EN 60 255, DIN VDE 0435-303, IEC/EN 60 947-1
• to: monitor DC and AC
• BA 9054 with measuring ranges from 15 mV to 1000 V
• MK 9054N with measuring ranges from 15 mV to 500 V
• High overload possible
• Input frequency up to 5 kHz
• Galvanic separation between Auxiliary Circuit – measuring ciruit
•...

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Voltage relay, over-/undervoltage MK 9054N

• According to IEC/EN 60 255, DIN VDE 0435-303, IEC/EN 60 947-1
• to: monitor DC and AC
• BA 9054 with measuring ranges from 15 mV to 1000 V
• MK 9054N with measuring ranges from 15 mV to 500 V
• High overload possible
• Input frequency up to 5 kHz
• Galvanic separation between Auxiliary Circuit – measuring ciruit
•...

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Voltage Relay BA 9036

• According to IEC/EN 60255-1, IEC/EN 60255-26, VDE 0435 part 303
• Single-phase
• Measuring ranges from 24 to 400
• Settable response and release value
• Without auxiliary supply
• optionally available with adjustable time delay
• with LED indicators for operation and state of contacts
• 2 changeover contacts
•...

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Voltage Relay BA 9037

• According to IEC 255, EN 30 255, VDE 0435 part 303
• Single phase
• Measuring ranges from 24 to 660 V
• Response and release value adjustable independent of each other
• Under- and overvoltage detection
• Without auxiliary supply
• Large setting range
• With time delay
• Closed circuit operation
•...

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Voltage monitor, over-/ undervoltage, residual ripple IK 9044

• According to IEC/EN 60 255, DIN VDE 0435-303
• For monitoring direct current voltage supply systems to detect
undervoltage, overvoltage and residual ripple
• For DC 24 V
• IK 9046 with adjustable residual ripple
• Width 17.5 mm

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Voltage monitor, over-/ undervoltage, residual ripple IK 9046

• According to IEC/EN 60 255, DIN VDE 0435-303
• For monitoring direct current voltage supply systems to detect
undervoltage, overvoltage and residual ripple
• For DC 24 V
• IK 9046 with adjustable residual ripple
• Width 17.5 mm

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Voltage monitor MK 9046N

• According to IEC/EN 60 255-1
• For monitoring direct current voltage supply systems
to detect residual ripple
• For DC 48 V
• With adjustable residual ripple
• LED indication for operation and contact position
• Time delay 10 s
• 1 changeover contact
• Width: 22,5 mm

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Overvoltage Relay IK 9170

• According to IEC/EN 60 255, DIN VDE 0435-303
• Monitoring of overvoltage in 3-phase systems
• Also for single phase
• Without auxiliary supply
• Settable response value
• N.C. circuit operation (optionally N.O. circuit operation)
• Optionally with or without N
• Optionally with delay t1 on trip
• Optionally...

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Overvoltage Relay SK 9170

• According to IEC/EN 60 255, DIN VDE 0435-303
• Monitoring of overvoltage in 3-phase systems
• Also for single phase
• Without auxiliary supply
• Settable response value
• N.C. circuit operation (optionally N.O. circuit operation)
• Optionally with or without N
• Optionally with delay t1 on trip
• Optionally...

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Overvoltage Relay IK 9172

• According to IEC/EN 60 255, DIN VDE 0435-303
• Monitoring of overvoltage
• Without auxiliary supply
• Settable response value
• De-energized on trip
• LED indicator for state of output relay
• 1 changeover contact
• As option energized on trip
• As option with delay t1 on trip
• As option with delay t2 on...

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Overvoltage Relay SK 9172

• According to IEC/EN 60 255, DIN VDE 0435-303
• Monitoring of overvoltage
• Without auxiliary supply
• Settable response value
• De-energized on trip
• LED indicator for state of output relay
• 1 changeover contact
• As option energized on trip
• As option with delay t1 on trip
• As option with delay t2 on...

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Undervoltage relay BA 9043

• According to EC/EN 60255-1, IEC/EN 60255-26, VDE 0435 part 303
• 3-phase
• For nominal voltage of 3 AC 100 / 57 to 690 / 400 V
• Measures arithmetic mean value
• Adjustable operate and release value
• For 3p3w or 3p4w systems
• BA 9043 optionally with adjustable time delay
• Closed circuit operation
• LED...

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Undervoltage Relay AA 9943

• According to EC/EN 60255-1, IEC/EN 60255-26, VDE 0435 part 303
• 3-phase
• For nominal voltage of 3 AC 100 / 57 to 690 / 400 V
• Measures arithmetic mean value
• Adjustable operate and release value
• For 3p3w or 3p4w systems
• BA 9043 optionally with adjustable time delay
• Closed circuit operation
• LED...

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Undervoltage relay, detection of short-time phase failures BC 9190N

• According to IEC/EN 60 255, DIN VDE 0435-303
• Fast detection of undervoltage and phase failure in AC voltage
systems
• Detects voltage drops (reaction time ≤ 20 ms)
• Response value 0.8 or 0.7 UN selectable by wire link
• Without auxiliary supply
• De-energized on trip
• LED indicator for contact position
•...

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Undervoltage relay IK 9171

• According to IEC/EN 60 255-1
• Monitoring of undervoltage in 3-phase system
• Also for single phase
• Without auxiliary supply
• Optionally for 3p3w systems
• LED indicator for state of output relay
• Independent of phase sequence
• 1 or 2 changeover contacts
• Optionally fixed or settable response value
•...

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Undervoltage Relay IL 9171

• According to IEC/EN 60 255-1
• Monitoring of undervoltage in 3-phase system
• Also for single phase
• Without auxiliary supply
• Optionally for 3p3w systems
• LED indicator for state of output relay
• Independent of phase sequence
• 1 or 2 changeover contacts
• Optionally fixed or settable response value
•...

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Undervoltage Relay SK 9171

• According to IEC/EN 60 255-1
• Monitoring of undervoltage in 3-phase system
• Also for single phase
• Without auxiliary supply
• Optionally for 3p3w systems
• LED indicator for state of output relay
• Independent of phase sequence
• 1 or 2 changeover contacts
• Optionally fixed or settable response value
•...

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Undervoltage Relay SL 9171

• According to IEC/EN 60 255-1
• Monitoring of undervoltage in 3-phase system
• Also for single phase
• Without auxiliary supply
• Optionally for 3p3w systems
• LED indicator for state of output relay
• Independent of phase sequence
• 1 or 2 changeover contacts
• Optionally fixed or settable response value
•...

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Undervoltage Relay IK 9173

• According to IEC/EN 60 255
• Monitoring of undervoltage
• Without auxiliary supply
• Optionally fixed or settable response value
• N.C. circuit operation
• Optionally with off-delay t1
• Optionally with on-delay t2
• LED indicator for state of output relay
• 1 changeover contact
• Devices available in 2...

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Undervoltage Relay SK 9173

• According to IEC/EN 60 255
• Monitoring of undervoltage
• Without auxiliary supply
• Optionally fixed or settable response value
• N.C. circuit operation
• Optionally with off-delay t1
• Optionally with on-delay t2
• LED indicator for state of output relay
• 1 changeover contact
• Devices available in 2...

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Undervoltage Relay IL 9071

• According to IEC/EN 60 255, DIN VDE 0435-303
• Identification of
- undervoltage
- phase failure
- asymmetry also with reverse voltage
- missing neutral in the system
- broken neutral on IL/SL 9071
- neutral exchanged against phase
• Single phase connection possible
• According to DIN VDE 0100-710
(for rooms used for medical purposes) as...

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Undervoltage Relay SL 9071

• According to IEC/EN 60 255, DIN VDE 0435-303
• Identification of
- undervoltage
- phase failure
- asymmetry also with reverse voltage
- missing neutral in the system
- broken neutral on IL/SL 9071
- neutral exchanged against phase
• Single phase connection possible
• According to DIN VDE 0100-710
(for rooms used for medical purposes) as...

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Undervoltage Relay RK 9871

• According to IEC/EN 60255-1
• For installations according to DIN VDE 0100-718 and DIN VDE 0108-100
(replacement of DIN VDE 0108 )
• Detection of undervoltage in 3-phase systems
• Without separately auxiliary voltage
(internal supply from all 3 phases)
• LED indication for für operation voltage and contact position
•...

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Undervoltage Relay To Detect Auto-Reclosing IL 9079

• According to IEC/EN 60 255, DIN VDE 0435-303
• Fast detection of undervoltage or phase failure in three-phase
voltage systems
• Detects auto reclosing of 20 ms
• Adjustable response value 0.55 ... 1.05 UN
• Operate delay to generate a defined reset signal
• Manual reset possible with external circuit
• Single-phase...

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Undervoltage Relay To Detect Auto-Reclosing SL 9079

• According to IEC/EN 60 255, DIN VDE 0435-303
• Fast detection of undervoltage or phase failure in three-phase
voltage systems
• Detects auto reclosing of 20 ms
• Adjustable response value 0.55 ... 1.05 UN
• Operate delay to generate a defined reset signal
• Manual reset possible with external circuit
• Single-phase...

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Battery symmetry monitor BA 9054/331

BA 9054/331
• According to IEC/EN 60 255
• To monitor for battery systems (emergency power supply)
• Measuring rang DC 0.12 ... 1.2 V or 0.2 ... 2 V
• Without separately auxiliary voltage
• High overload possible
• With time delay 10 s
• LED indicators for operation and contact position
• Width: 45 mm

BA 9054/332
as BA...

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Battery symmetry monitor BA 9054/332

BA 9054/331
• According to IEC/EN 60 255
• To monitor for battery systems (emergency power supply)
• Measuring rang DC 0.12 ... 1.2 V or 0.2 ... 2 V
• Without separately auxiliary voltage
• High overload possible
• With time delay 10 s
• LED indicators for operation and contact position
• Width: 45 mm
BA 9054/332
as BA...

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Over- and undervoltage relay IL 9077

• According to IEC/EN 60 255, DIN VDE 0435-303
• Identification of overvoltage, undervoltage and phase failure
• With asymmetry identification as an option
• Mains fault diagnostics with a number of LEDs
• Setting values for overvoltage and undervoltage can be set
separately
• Large Setting Ranges 0.9 ... 1.3 UN and 0.7 ......

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Over- and undervoltage relay IP 9077

• According to IEC/EN 60 255, DIN VDE 0435-303
• Identification of overvoltage, undervoltage and phase failure
• With asymmetry identification as an option
• Mains fault diagnostics with a number of LEDs
• Setting values for overvoltage and undervoltage can be set
separately
• Large Setting Ranges 0.9 ... 1.3 UN and 0.7 ......

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Over- and undervoltage relay SL 9077

• According to IEC/EN 60 255, DIN VDE 0435-303
• Identification of overvoltage, undervoltage and phase failure
• With asymmetry identification as an option
• Mains fault diagnostics with a number of LEDs
• Setting values for overvoltage and undervoltage can be set
separately
• Large Setting Ranges 0.9 ... 1.3 UN and 0.7 ......

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Over- and undervoltage relay SP 9077

• According to IEC/EN 60 255, DIN VDE 0435-303
• Identification of overvoltage, undervoltage and phase failure
• With asymmetry identification as an option
• Mains fault diagnostics with a number of LEDs
• Setting values for overvoltage and undervoltage can be set
separately
• Large Setting Ranges 0.9 ... 1.3 UN and 0.7 ......

More information

Measuring relays for voltage monitoring from DOLD protect consumers such as electric motors from overloads caused by insufficient voltage and/or the destruction of devices caused by excess voltage.

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