hot sales 1-12 winding CT open circuit protector

1.high-speed Single-chip control 2.signal input and output isolation 3.unique anti-interfrence technology 4.winding costomise

1.The protection principle

The device uses high-performance MCU centralized control, the core ofthe control unit is to use part of the imports of high-performance microcontroller and peripheral devices constitute a signal acquisition, data processing system. Products in parallel in the CT secondary side during normal operation, to protect both ends of the voltage less than 20V, the MCU receives less than programming the provisions of the turn-on voltage value, the output pin signal is issued, both ends of the protector in the open state, leakage current is zero, so the value of the action of the loop and meter accuracy without any impact.

When the secondary circuit open, or the primary winding is abnormal over current in the secondary winding voltage is much higher than normal operating voltage (the value depends on the CT parameters and operation), in parallel with the current transformer MCU receives the secondary overvoltage protection device to signal to compare with the provisions set breakover voltage value, its value is greater than the breakover voltage value, the microcontroller output pin signals protector instant action (the action time less than 1 ms), warning lights, this time to protect signals an alarm and locking differential protection, the failure to eliminate manual or automatic reset (30 seconds), can be used again after reset, the life of up to 10000 times stable and reliable operation.

 2.Purpose:

The KC500D current transformer secondary overvoltage protection is widely used in power systems, for indoor, current transformers, low voltage switchgear, outdoor current transformer, box-type substation current transformers and other various current transformer the place.The KC500D current transformer secondary overvoltage protection device used in the differential winding of the CT secondary side, over-current winding, measuring winding, busbar protection windings alternate winding.

3.product technical standards and parameters:The GB/T1408-1989 solid insulation material power frequency electric strength test methodGB/T2423.46-1997 electric and electronic products environmental experimentAC electrical installations in DL/T620-1997 overvoltage protection and insulation coordinationGB7251.1-1997 Low-voltage switchgear and control equipmentWith GB1208-1997 current transformer standards

4. Product technical parameters:

Normal leakage current IL20V 0	0
Input resistance	Infinity
Turn-on voltage	150V ± 10% (factory setting value can be set with user requirements)
Turn-on voltage of Conduction time	Ts≤1ms
Alarm output contact capacity	AC277V/10A;DC110V/10A
Protect the relay contact capacity	AC277V/10A
CT specifications	the secondary side of the peak is greater than 150V
Protect current	5A
Work environment	Operating temperature: -20 °C ~ +70 ° CHumidity: ≤ 95% RHAltitude: not more than 2000 m
Working reset	Reset button to reset manually; automatic reset
Working seismic performance	10-50-10HZ 2g 3min
Reliable security	to meet the requirements of IEC834-1
working power	AC220V,50HZ or DC220V AC220V,
Power Consumption	≤5W
Installation way	Orbital

Product selection catalog:

Type	Winding number	External dimensions
BW500 D- 1	1 winding:	Length: 117; width: 91; high 73
BW500 D- 2	2 windings:	Length: 117; width: 91; high 73
BW500D - 3	3 windings:	Length: 117; width: 91; high 73
BW500D - 4	4 windings	Length: 117; width: 91; high 73
BW500D- 5	Five windings	Length: 117; width: 91; high 73
BW500D –6	6 windings	Length: 117; width: 91; high 73
BW500D-9	9 windings	Length: 145; width: 91; high 73
BW500D-12	12 windings	Length: 145; width: 91; high 73

      

hot sales 1-12 winding CT open circuit protector