Nanzi PSC691U microcomputer integrated protection device

PSL 691U
Line protection measurement and control device
Three section overcurrent protection (can be started by composite voltage, with direction)/three
Sectional zero sequence overcurrent protection (with direction)/overload protection/reclosing
Switch on/check synchronous manual switch on/switch on acceleration protection/low cycle load shedding/low cycle load shedding
Voltage reduction/small current grounding line selection/measurement
Voltage level of 35kV and below
Line of
PSL 691US
Line protection measurement and control device
Three section composite voltage overcurrent protection/zero sequence overcurrent protection/over negative
Load protection/post acceleration protection/4-20Ma output/measuring auxiliary power incoming line, buscouple switch
PST 691U
transformer Differential protection device
Differential protection/differential quick break protection/differential current out of limit alarm/TA break
Line discrimination
PST 691UF
Transformer non electric quantity protection device Transformer non electric quantity protection/separate operating circuit
PST 692U
Transformer backup protection and monitoring device
Composite voltage locking (direction) overcurrent protection/zero sequence current protection/room
Gap zero sequence current protection/zero sequence voltage protection/overload protection/
Start ventilation/lock on load voltage regulation/measurement
110kV and below
Class capacity 6300kVA and
Transformer above
PST 693U
Transformer protection and monitoring device
Three section composite voltage overcurrent protection/inverse time overcurrent protection/two
Section definite time negative sequence overcurrent protection/high voltage side definite time zero sequence overcurrent
Protection/definite time zero sequence overcurrent protection at low-voltage side/inverse time at low-voltage side
Zero limiting sequence overcurrent protection/overload protection/overvoltage protection/low
Voltage protection/non electricity protection/FC locking/4-20mA output/
measure
Station service below 2000kVA
Transformer, used transformer, grounding transformer
PSC 691U
capacitor Protection, measurement and control device
Current quick break protection/overcurrent protection/overvoltage protection/low voltage
Protection/zero sequence overcurrent protection/unbalanced current protection/unbalanced
Voltage protection/differential voltage protection/differential current protection/measurement
Parallel connection container group
PSR 691U
reactor Differential protection device
Differential protection/differential quick break protection/three section compound voltage overcurrent
Protection/zero sequence overcurrent protection/overload protection/measuring series reactor, cable line
PSP 691U
Automatic switching device of standby power supply
Buscouple backup automatic switching/incoming line backup automatic switching/transformer backup automatic switching/auxiliary power automatic switching Standby power automatic switching
PSV 691U
PT protection, measurement and control device, two-stage low-voltage protection/bus insulation detection/measurement, 35kV and below PT cabinet
PSV 692U
PT parallel device PT parallel single bus section
PSV 693U
PT paralleling device PT paralleling/two section low-voltage protection single bus section
PSM 691U
Motor differential comprehensive protection device Differential protection comprehensive protection measurement of 2000kW and above asynchronous motor