Summary:
The master circuit SWJ1 series electronic multi-function protective relay(called hereinafter referred to as relay) adopts holing type,which does not only get rid of contact line,but also avoid the contact heat with contact terminal.The relay and AC contactor are connected with magenetic force start system,offering reliable protection to loss of phase start,loss of phase operation,locked rotor,overload,abrasion,three-phase unbalanced,and indicating falut type for electric motor.
Product Character:
Monitoring and controlling the current,voltage and temperature together;precise of tuning;high precision of repeat;reaction quick;clear fault indication;more simple installation debugging.
Product function:
Over current 9over load)protection;three-phase unbalanced protection;less phase proctction,over voltage protection;under voltage protection;earthing(residual current)protection:fault type indication function;fault memory function;automatic manual reset function;self-check function;fault alarm function;automatic exit for invalidation.
Model and Function
|
Protective Model
function
|
WCJ1/AT
|
WCJ1/A
|
WCJ1/AS
|
WCJ1/AV
|
WCJ1/AE
|
WCJ1/A
|
|
Over current (overload)protection
|
.√
|
√
|
√
|
√
|
√
|
√
|
|
Three-phase unbalanced protection
|
|
|
√
|
√
|
√
|
√
|
|
Phase not together protection
|
√
|
√
|
√
|
√
|
√
|
√
|
|
Over voltage protection
|
|
|
|
√
|
|
|
|
Under voltage protection
|
|
|
|
√
|
|
|
|
Earthing(residual current)protection
|
|
|
|
|
√
|
|
|
Under current (racing)protection
|
|
|
|
|
|
|
|
Fault type indication
|
√
|
√
|
√
|
√
|
√
|
√
|
|
Fault menory
|
|
√
|
√
|
√
|
√
|
√
|
|
Automatic manual reset
|
|
√
|
√
|
√
|
√
|
√
|
|
Self-check function
|
√
|
|
√
|
√
|
√
|
√
|
|
Fault alarm function
|
|
√
|
√
|
√
|
√
|
√
|
|
Automatic exit for invalidation
|
√
|
√
|
√
|
√
|
√
|
√
|
Current range and applicable motor power
|
Nomal current
|
Current tuning range
|
Current tuning range
|
|
16A
|
1A~16a
|
0.55~7.5KW
|
|
30A
|
1.5A~36A
|
1.1~15KW
|
|
65A
|
15A~65A
|
11~30KW
|
|
95A
|
35A~95A
|
17.5~45KW
|
|
120A
|
45A~120A
|
22~55KW
|