12kV 5kA metal (zinc) oxide surge lightning arrestor without gap (KEMA)

1-Nearly 20 year's manufacturing&exporting experience 2-ISO9001 and KEMA certificates 3-IEC60099-4 standard

Metal-Oxide Surge Arrester

1. Series 1---Polymer housed Metal-Oxide Surge Arrester

2. Series 2-- Polymer housed Metal-Oxide Surge Arrester

3. Series 3---Porcelain Housed Metal- Oxide Surge Arrester

4. Series 4—Station Class Surge Arresters

Operating Principle

The metal oxide arrester provides the most advanced protection against over-voltage in the world, since MOA’s resistors are made up of Zinc Oxide films. MOA has good voltage-ampere characteristics as compared with silicon carbide arrester, it is Volt-Ampere characteristics is much superior and results in much better performance.

A micro ampere level current flows while MOA is operating under normal voltage, but the amount of the current will be thousands amperes when MOA is subjected to over-voltage, because of MOA has a good non-linear characteristics. Hence MOA provide excellent prection for the HV equipment, especially the transformers, cables and switchgear.

Application

The metal oxide arrester which applies to protect the power equipment like transformers against system overvoltages and lightning surges.

Service Conditions

Ambient Conditions: -40°C to 40°C

Height about sea level: ≤1000m

Power supply frequency: 48-62HZ

Earthquake intensity: Not exceed Richter 7.0 grade

Maximum wind velocity: ≤35m/s

The long-term power running voltage should not over the continuous operating voltage.

The altiplano or contaminated area should be indicated.

 

Series 1  Polymer Housed Metal-oxide Surge Arresters(KEMA)

 

Main Technical Data

 

Model (10KA)	Rated Voltage(kV)	MCOV (kV)	Max. Residual Voltage(kV)			2000 us Rectangular Current Withstand(A)	4/10 us High Current Impulse	Domension (mm)		No. of  Sheds	Creepage distance (mm)
			Steep Current Impulse 1/10us	Lightning Impulse  8/20us	Switching Current Impulse 30/60us			A	B
HDA1-10/6	6	4.8	20.7	18	15.3	250	100	250	125	3	210
HDA1-10/9	9	7.2	31	27	23	250	100	280	155	4	280
HDA1-10/11	11	8.8	37.9	33	28.1	250	100	310	185	5	350
HDA1-10/12	12	9.6	41.5	36	30.6	250	100	310	185	5	351
HDA1-10/15	15	12	52	45	38.3	250	100	340	215	6	419
HDA1-10/18	18	14.4	62	54	46	250	100	370	245	7	487
HDA1-10/21	21	16.8	72.5	63	53.5	250	100	400	275	8	555
HDA1-10/24	24	19.2	82.5	72	61.2	250	100	430	305	9	622
HDA1-10/27	27	21.6	93.2	81	69	250	100	460	335	10	690
HDA1-10/30	30	24	103.5	90	76.5	250	100	520	395	12	760
HDA1-10/33	33	26.4	113.8	99	84.2	250	100	550	425	13	894
HDA1-10/36	36	28.85	124.2	108	91.8	250	100	550	425	13	894

Model (5KA)	Rated Voltage(kV)	MCOV (kV)	Max. Residual Voltage(kV)			2000 us Rectangular Current Withstand(A)	4/10 us High Current Impulse	Domension (mm)		No. of  Sheds	Creepage distance (mm)
			Steep Current Impulse 1/10us	Lightning Impulse  8/20us	Switching Current Impulse 30/60us			A	B
HDA1-5/6	6	4.8	20.7	18	15.3	150	65	250	125	3	210
HDA1-5/9	9	7.2	31	27	23	150	65	280	155	4	280
HDA1-5/11	11	8.8	37.9	33	28.1	150	65	310	185	5	350
HDA1-5/12	12	9.6	41.5	36	30.6	150	65	310	185	5	351
HDA1-5/15	15	12	52	45	38.3	150	65	340	215	6	419
HDA1-5/18	18	14.4	62	54	46	150	65	370	245	7	487
HDA1-5/21	21	16.8	72.5	63	53.5	150	65	400	275	8	555
HDA1-5/24	24	19.2	82.5	72	61.2	150	65	430	305	9	622
HDA1-5/27	27	21.6	93.2	81	69	150	65	460	335	10	690
HDA1-5/30	30	24	103.5	90	76.5	150	65	520	395	12	760
HDA1-5/33	33	26.4	113.8	99	84.2	150	65	550	425	13	894
HDA1-5/36	36	28.85	124.2	108	91.8	150	65	550	425	13	894

12kV 5kA metal (zinc) oxide surge lightning arrestor without gap (KEMA)