Zinc Oxide Surge Arrester

It is designed to protect various electrical components within power systems from damage caused by overvoltage. Under normal operating voltages, only a current in the microampere range flows through the device; however, when an overvoltage surge occurs, the current flowing through the arrester increases rapidly, simultaneously limiting the magnitude of the overvoltage and dissipating its energy. Once the overvoltage subsides, the zinc oxide arrester reverts to a high-impedance state, thereby ensuring the safe and normal operation of the power system’s electrical equipment. It offers numerous advantages, including compact dimensions, light weight, superior sealing performance, and excellent explosion-proof capabilities.

Application Environment	Product Model	Arrester Rated Voltage (kV RMS)	System Nominal Voltage (kV RMS)	Arrester Continuous Operating Voltage (kV)	Residual Voltage at Nominal Discharge Current (kV)	Minimum Reference Voltage (1 mA DC) (kV)	Current Surge Withstand
Application Environment	Product Model	Arrester Rated Voltage (kV RMS)	System Nominal Voltage (kV RMS)	Arrester Continuous Operating Voltage (kV)	Residual Voltage at Nominal Discharge Current (kV)	Minimum Reference Voltage (1 mA DC) (kV)	2000 µs Square-wave Current (A) Peak	4/10 µs Surge Current (kV) Peak
Distribution Type	OT5WS-5/15	5	10	8.6	15	24	100/400	25/100
Distribution Type	OT5WS-17/50	17	10	12.7	50	25	100/400	25/100
Capacitor Type	OT5WR-7.6/27	7.6	6	4	27	13.8	400/600	65
	OT5WR-17/42	17	10	13.2	42	24
	OT5WR-53/124	53	35	42	124	74
	OT5WR-51/134GY	51	35	42	134	75
Motor Type	OT2.5WD-3.8/9.5	3.8	3.15	2	9.5	5.6
	OT2.5WD-7.6/19	7.6	6.3	4	19	11.5
	OT2.5WD-12.7/31	12.7	10.5	6.6	31	189 .
	OT2.5WD-16.7/40	16.7	13.8	9	40	24.8
	OT2.5WD-19/45	19	25.75	10	45	28.2
Capacitor Type	OT5WR-7.6/27	7.6	6	4	27	13.8
	OT5WR-17/42	17	10	13.2	42	24
	OT5WR-53/124	53	35	42	124	74
	OT5WR-51/134GY	51	35	42	134	75
Motor Type	OT2.5WD-3.8/9.5	3.8	3.15	2	9.5	5.6
	OT2.5WD-7.6/19	7.6	6.3	4	19	11.5
	OT2.5WD-12.7/31	12.7	10.5	6.6	31	18.9
	OT2.5WD-16.7/40	16.7	13.8	9	40	24.8
	OT2.5WD-19/45	19	25.75	10	45	28.2
Neutral Point	OT1WD-2.3/6	2.3	3.15	/	6	3.5
	OT1WD-4.6/12	4.6	6.3	/	12	7
	OT1WD-7.6/19	7.6	10.5	/	19	11.5
Transformer Neutral Point	OT1.5W-73/186	73	110	58	185	103

Related Products