NJYB3
NJYB3 is Relay manufactured by CHiNT.
Relay
Protection Relay
2. Type designation N JYB 3
- -
1~16 function code Design sequence No. Relay pany code
NJYB3 Relay
1. General NJYB3 relay is used to provide overvoltage, undervoltage, phase failure, phase sequence and threephase unbalance control in three-phase three-wire 380V circuits and three-phase four-wire 220V circuits with a frequency of AC 50Hz. For example, it is used for power control systems, air conditioning systems and motors.
This relay is a voltage protection relay. After detecting the voltage signal, the relay processes the input signal, judges if there is an overvoltage, undervoltage, phase failure, error-phase or unbalance and controls the operation accurately and stably by means of the built-in microprocessor.
3. Technical data
Model NJYB3
Protection function
Protection operation time
Rated operational voltage
Contact capacity
Contact form
Usage category
Conventional heating current (Ith)
Electrical Mechanical life life
Overvoltage Undervoltage Three-phase voltage unbalance
Phase failure, phase sequence
0.1s~10s ≤1s
Three-phase three-wire system: Resistive load:
AC 380V 50Hz AC250V 6A cosφ=1
Three-phase four-wire system: AC 220V 50Hz
Inductive load: AC250V 1A cosφ=0.4
1 N/O, 1 N/C
AC-15
3A
105 106
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