Xi’an SD | 10kV Metal-Oxide Surge Arrester With Series Gap For Distribution

Metal-oxide surge arrester is one of the most advanced protectors limiting overvoltage, and is the basis of the insulation coordination equipment in power industry.Metal-oxide surge arrester has many advantages such as quick action, flat Vol-ampere characteristics, low residual voltage, high discharge current capacity, stable electrical performance,long lifecycle,simple structure and etc.

Metal-oxide surge arrester is widely used in power generation, transformation and distribution system to prevent the insulation of the power equipments from being damaged by the over-voltage.

Polymer-housed metal-oxide surge arrester is the scientific achievement that combines the advantages of organic insulation material and traditional porcelain-clad MOA technique. Metal-oxide surge arrester has excellent insulation performance, high dialectical strength, anti-leaking,anti-electriccorrosion,heat-resisting,cold-resisting,antiaging,explosion-proof, and good chemical stability,hydrophobic property,and nice sealing.Metal-oxide surge arrester is designed and manufactured strictly following the standard of GB 11032 and achieves advantage against the competitive international products.

According to the JB/T 8459-2011,the type of MOA shows as below:

Product type:	Y-porcelain-housed	YH-polymer-housed
Structure feature:	W-without gap	C-with series gaps	B-with shunt gaps
Service condition:	S-distribution	Z-power station	R-shunt capacitor
	D-motor	T-electrical railway	X-overhead line
Additional feature:	W-anti-pollution	TH-for hot and humid area	G-high altitude type

1.For indoors and outdoors;

2.Ambient air temperature within the range of-40℃~+40℃;

3.Altitude not exceeding 2600m;

4.Frequency for A.C.power supply not less than 48Hz and not exceeding 62HZ;

5.Power Frequency voltage applied continuously between the terminals of the arrester not exceeding its continuous operating voltage;

6.Earthquake intensity:

7. degree and below;

8.Maximal wind velocity not exceeding 35m/s.

1.Metal-oxide surge arrester have low partial discharge;

2.Metal-oxide surge arrester have low residual voltage;

3.Metal-oxide surge arrester have high dielectric insulation level;

4.Tolerance to high/low temperature;

5.Explosion-proof;

6.Anti-corrosion;

7.Anti-aging;

8. Shorter lead time (Ex-work 1 week+).

Metal-oxide surge arrester-Aapless MOA for Distribution

Below info. only for your reference, all data shall be specified and determined by technical specification and customer demand.

Technical Parameta /Product type	Nominal voltage of system	Rated voltage kV.m	Continuou operation voltage	Reference voltage at D.C.1mA kV.pc	Nomina discharge current kA .peak	Lightning 1mpulse	Steeping mpulse	Switching impulse	Parachute diameter φ mm	Height H mm	Fig No
YH5WS-5/15	3	5	4.0	7.5	5	15.0	17.3	12.8	76	200	1
YH5WS-10/30	6	10	8.0	15.0	5	30.0	34.6	25.6	76	200	1
YH5WS-12/35.8	10	12	9.6	18.0	5	35.8	41.2	30.6	76	255	1
YH5WS-15/45.6	10	15	12.0	23.0	5	45.6	52.5	39.0	76	255	1
YH5WS-17/50	10	17	13.6	25.0	5	50.0	57.5	42.5	76	255	1

The structure and installtion dimensional drawing: