Classify

Function Name

84(2)1

822

842

84(2)3

Protection

Function

Sent velocity broken

√

Percentage differential protection(secondary harmonic restraint)

√

TA disconnexion blocking percentage differential protection

√

The differential current limit alarm

√

Compound voltage blocking Two sections of three time overcurrent protection

√

√

√

Overcurrent inverse time lag

√

√

√

Negative sequence over current

√

√

√

Overload

√

√

√

Overload blocking voltage regulation

√

√

√

Overload start air-cooled

√

√

√

Proper signal

√

√

Transformer tap position and on-load voltage regulation

√

Zero-sequence voltage protection

√

√

√

A three zero-sequence current protection

√

Composite voltage components

√

√

√

TV disconnection detect

√

√

√

Operation

circuit

Power independent containing anti adjustable locking function operation circuit

√

√

√

Control circuit abnormal alarm

√

√

√

Measurement

And

Control

Function

16 way remote signal input, device remote signal shift, accident remote signal

√

√

√

√

Normal circuit break remote deciliter

√

√

√

√

P, Q, IA, IB, IC, Ua, Ub, Uc, COSΦ, f

√

√

√

Switch accident in statistics and event SOE etc

√

√

√

√

Fault recorder

√

√

√

√

Time hack

Realize GPS time hack,network time hack

√

√

√

√

Communication

Ethernet, RS232/485 communication interface

√

√

√

√