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Automatic Equipment Function Overview

DF3382 Automatic Throw-in Equipment of Emergency/Spare Power Supply

Application

DF3382 equipment is applicable to the 110kv substation and below which require the automatic switching of emergency/spare power supply.

Function

Automatic throw-in mode for transformers

Automatic throw-in mode for bridge-connection arrangement

Automatic throw-in mode for sectionalized-connection arrangement

Automatic throw-in mode for incoming feeders

Combination of the above modes

Switch-onto-fault

Load shedding for overload after throw-in

DF3388 Emergency Control Equipment for Frequency & Voltage

Application

DF3388 equipment is applicable to the substation or power plant which require the emergency control for frequency and voltage.

Function

Configurable 8-shot shedding for under-frequency and under-voltage respectively

Load shedding up to  28 feeders

Islanding for under-frequency and under-voltage

Intelligent detection for distinguish shunt fault and under-voltage

DF3389 Automatic Synchronization Equipment

Application

DF3389 equipment is applicable to the substation or power plant which require several synchronization points

Function

Max.synchronization configuration for circuit-breakers up to 16

Available 16 channels for remote synchronization control

DF3390 Intelligent Synchronization Switching Equipment

Application

DF3390 equipment is applicable to the substation or power plant which require several synchronization points for swithing the secondary circuit wiring.

Function

Max. switching channels for secondary circuit wiring up to 16

DF3391 Transformer Overload Combinated Shedding Equipment

Application

DF3391 equipment is applicable to the substation or power plant which require load shedding for transformer overload.

Function

6-shot overload combinated shedding