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PCCN Protection System

ENEL Relay system


Protection relay system

DV966 Neutral Management

DV971 Auxiliary functions

DV7036 Distance Relay


As part of the development of ENEL protection system for HV/MV substation, LogicLab develops the device DV971 auxiliary functions complied to ENEL DV1071A2NCI.

LogicLab has designed and developed the firmware of the logic functions implemented in the device, and software for device management.

Main features:
- Alarm for minimum voltage 110Vcc
- Alarm for minimum voltage  48Vcc
- Alarm for minimum voltage  24Vcc
- Alarm for minimum voltage  380Vca
- Alarm for battery ground
- Alarm for people in substation room
- 65 isolated digital inputs
- 30 Digital output (Relays)
- 8 Analog inputs (V4,V8,V12, 24V,48V,110V,P+,P-)
- 4 current loop transmitters 0…5mA
- 8 LED based local alarm
- Remote alarm
- RS232 communication interface


DV971 is not a product manufactured

and distributed by LogicLab



© LogicLab s.r.l. -  VAT 13218590159 -  Via della valle 67 - 20841 Carate Brianza (MB)  - Italy - Tel (+39) 0362.805287 - Fax (+39) 0362.1914102 -