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Electronic Motor Current Monitoring Relay , 3 Phase Overcurrent Relay 220V 50Hz
Technical Parameters
(1) Protection functions: Phase protection, three-phase unbalance
protection, and overload protection.
1. Phase-failure protection: When any phase of the three-phase
power supply of the motor lacks a phase or the internal phase of
the motor is broken, the action delay time of the protector is ≤
1S.
2. Three-phase unbalance protection: When the phase difference of
any two-phase working current in the three-phase power supply of
the motor exceeds (50±10)%, the delay time of the protector
operation is ≤1S.
3. Overload protection: When the operating current of the motor
reaches 1.2 times to 6 times of the rated value, the action delay
time of the protector is 80S ~ 10S (inverse time characteristic).
the output interface reset mode: control circuit power reset; reset
time: (60 ± 10) S.
work methods: continuous work style.
applicable voltage range: AC24V ~ 380V/45 ~ 60Hz.
Protector specification selection
1. The user should select the corresponding motor protector
according to the rated operating current of the motor to be
protected; in a special case, the large-size protector can be
applied to the low power motor by increasing the number of power
lines passing through the protector's conductor hole. Protection,
small size protectors can be applied to the protection of
high-power motors by installing the secondary side of current
transformers.
2. For motors with rated operating current less than 2 A, use 2 to
5A protectors by increasing the number of turns of the power cables
passing through the conductor holes of the protector. Consider that
the sampling current of the protector can be ensured when the motor
is unloaded. Less than 3A.
Features
Integrative structure Three-phase monitoring of overload, phase loss, phase unbalance Powered by the measuring circuit 1 NC SCR output contact 4 LEDs for status indication
Protective Functions
Overload,Phase loss,Phase unbalance
Typical Applications
Pumps . Fans, Blowers , Motors, Compressors
Approvals
CE • CCC
Technical data
Type | JDB-1 |
Current range | 2.5-5A,4-10A,8-20A,16-40A,32-80A, 63-160A,150-300A |
Startup delay | 5s,10s,20s |
Protective functions | overload,phase loss,phase unbalance |
Setting method | by knob |
Indicators | ABC overload&phase loss |
Output contacts | 1NC(SCR output) |
Contact capacity | 1A 380VAC |
Operating voltage of control loop | AC220V or AC380V |
Dimensions(H*W*D) | 2.5-40A:38*90*63mm 80-300A:44.5*123*67mm |
Mounting | screw fixing |