Description

Overview

Gapless Metal Oxide Surge Arrester which uses zinc oxide semiconductor as a resistor material, such type of arrester is known as a metal oxide surge arrester or ZnO Diverter. This arrester provides protection against all types of AC and DC over voltages. It is mainly used for overvoltage protection at all voltage levels in a power system.

Advantages

It eliminates the risk of spark over and also the risk of shock to the system when the gaps break down.
It eliminates the need for a voltage grading system.
At the normal operating condition, the leakage current in the ZnO is very low as compared to other diverters.
There is no power following the current in ZnO diverter.
It has a high energy absorbing capability.
ZnO diverters possess high stability during and after prolonged discharge.
In ZnO diverter, it is possible to control the dynamic overvoltage in addition to switching surges. This results in economic insulation coordination.

Working Condition

Ambient air temperature: -40℃~+40℃.
Altitude：<=2000m.
Frequency: 48Hz~62Hz.
Power frequency voltage applied between terminals of surge arrester must not exceed continuous operating voltage of surge arrerter.
Earthquake intensity is less than 8 degrees.
Max. Wind speed is 35m/s.

Parameter

Technical Data

1. 5kA Metal oxide Polymer Housing (Gapless) type Surge Arrester for A.C System

Model	Rated Voltage (kV)	Continuous operating Voltage (kV)	Lightening impulse residual voltage under nominal discharge current(≤KV)	Creepage distance (mm)	2ms square wave impulse current withstands (A)	4/10 μs high current impulse Withstands (KA)
YH-5W-6	6	5.1	18	320	150	65
YH-5W-9	9	7.65	27	430
YH-5W-12	12	10.2	36	430
YH-5W-15	15	12.75	45	530
YH-5W-18	18	15.3	54	530
YH-5W-21	21	16.8	63	640
YH-5W-24	24	19.2	72	640
YH-5W-27	27	21.6	81	740
YH-5W-30	30	24	90	890
YH-5W-33	33	26.4	99	890
YH-5W-36	36	28.8	108	1115

2. 10kA Metal oxide Polymer Housing (Gapless) type Surge Arrester for A.C System

Model	Rated Voltage (kV)	Continuous operating Voltage (kV)	Lightening impulse residual voltage under nominal discharge current(≤KV)	Line discharge class	Creepage distance (mm)	2ms square wave impulse current withstands (A)	4/10 μs high current impulse Withstands (KA)
YH-10W-6	6	5.1	18	1	320	250	100
YH-10W-9	9	7.65	27		430
YH-10W-12	12	10.2	36		430
YH-10W-15	15	12.75	45		530
YH-10W-18	18	15.3	54		530
YH-10W-21	21	16.8	63		640
YH-10W-24	24	19.2	72		740
YH-10W-27	27	21.6	81		740
YH-10W-30	30	24	90		890
YH-10W-33	33	26.4	99		890
YH-10W-36	36	28.8	108		1115
YH-10W-42	42	33.6	126	2	1260	400
YH-10W-48	48	39	139		1260
YH-10W-54	54	42	160		1260
YH-10W-60	60	48	178		1465
YH-10W-66	66	52.8	196		1465
YH-10W-72	72	57	214		2255
YH-10W-84	84	67.2	244		2255
YH-10W-90	90	72.5	249		2255
YH-10W-96	96	75	265	3	3555	800
YH-10W-108	108	84	281		3555
YH-10W-120	120	96	300		4153
YH-10W-150	150	120	416		5040
YH-10W-200	200	156	520		7110

3. 20kA Metal oxide Polymer Housing (Gapless) type Surge Arrester for A.C System

Model	Rated Voltage (kV)	Continuous operating Voltage (kV)	Lightening impulse residual voltage under nominal discharge current(≤KV)	Line discharge class	Creepage distance (mm)	2ms square wave impulse current withstands (A)	4/10 μs high current impulse Withstands (KA)
YH-20W-108	108	84	281	3	3555	800	100
YH-20W-120	120	96	300		4153
YH-20W-150	150	120	416		5040
YH-20W-200	200	156	520		7110

4. 5kA Metal Oxide Porcelain Housing (Gapless) type Surge Arrester for A.C. System

Model	Rated Voltage (kV)	Continuous operating Voltage (kV)	Lightening impulse residual voltage under nominal discharge current(≤KV)	Creepage distance (mm)	2ms square wave impulse current withstands (A)	4/10 μs high current impulse Withstands (KA)
Y5W-6	6	5.1	18	320	150	65
YH-5W-9	9	7.65	27	430
Y5W-12	12	10.2	36	430
Y5W-15	15	12.75	45	530
Y5W-18	18	15.3	54	530
Y5W-21	21	16.8	63	640
Y5W-24	24	19.2	72	640
Y5W-27	27	21.6	81	740
Y5W-30	30	24	90	890
Y5W-33	33	26.4	99	890
Y5W-36	36	28.8	108	1115

5. 10kA Metal Oxide Porcelain Housing (Gapless) type Surge Arrester for A.C. System

Model	Rated Voltage (kV)	Continuous operating Voltage (kV)	Lightening impulse residual voltage under nominal discharge current(≤KV)	Line discharge class	Creepage distance (mm)	2ms square wave impulse current withstands (A)	4/10 μs high current impulse Withstands (KA)
Y10W-6	6	5.1	18	1	280	250	100
Y10W-9	9	7.65	27		320
Y10W-12	12	10.2	36		320
Y10W-15	15	12.75	45		450
Y10W-18	18	15.3	54		450
Y10W-21	21	16.8	63		450
Y10W-24	24	19.2	72		510
Y10W-27	27	21.6	81		510
Y10W-30	30	24	90		890
Y10W-33	33	26.4	99		890
Y10W-36	36	28.8	108		890
Y10W-42	42	33.6	126	2	1256	400
Y10W-48	48	39	139		1256
Y10W-54	54	42	160		1256
Y10W-60	60	48	178		1440
Y10W-66	66	52.8	196		1440
Y10W-72	72	57	214		1440
Y10W-84	84	67.2	244		2200
Y10W-90	90	72.5	249		2200
Y10W-96	96	75	265	3	3350	800
Y10W-108	108	84	281		3350
Y10W-120	120	96	300		3948
Y10W-150	150	120	416		4400
Y10W-200	200	156	520		6700

6. 20kA Metal Oxide Porcelain Housing (Gapless) type Surge Arrester for A.C. System

Model	Rated Voltage (kV)	Continuous operating Voltage (kV)	Lightening impulse residual voltage under nominal discharge current(≤KV)	Line discharge class	Creepage distance (mm)	2ms square wave impulse current withstands (A)	4/10 μs high current impulse Withstands (KA)
Y20W-108	108	84	281	3	3555	800	100
Y20W-120	120	96	300		4106
Y20W-150	150	120	416		4400
Y20W-200	200	156	520		6700
Y20W-444	444	324	1106	4	17052	2000