Application

Protection of medium/high voltage AC networks against both, multiple atmospheric and switching overvoltage as well as Very Fast Transients (VFT). Suitable for the protection of transformers, transformers in arc fumace applications, cables, generators, parallel to capacitor banks, and railway vehicles. Can be used mechanically as support insulator or as suspension insulator in case of application as line arrester. For indoor and outdoor installation.

Keystone

The metal-oxide surge arrester (MOSA) is the most advanced overvoltage protector in the word. Due to make the varistor of core component mainly adopt MOSA. Compared with the conventional silicone carbide arrester, this prescription of the product improves greatly the Voltage-Current(U-I) characteristic of the metal-oxide varistor and increased through-current capability at over-voltage so as to bring a radical-changes for the characteristic of the MOSA.

Under the circumstance of normal operating voltage, the current through the MOSA just on microampere degree. When suffered from overvoltage, the MOSA's excellent non-linear characteristic will make the current through the MOSA increase to several thousand ampere, While the MOSA will be under the circulating state and release overvoltage energy so as to protecting the power transmission equipments against the damage caused by the overvoltage.

Usual service condition

a) Ambient air temperature within the range of -55℃ to+50℃.

b) Altitude not exceeding 2000m.

c) Frequency of the A.C. power supply not less than 48Hz and not exceeding 62Hz.

d) Power frequency voltage applied continuously between the terminals of the arrester not exceeding its continuous operating voltage.

e) Maximum wind speed not exceeding 35m/s.

f) Earthquake intensity not exceeding 7 degrees.

Advantage

-Low residual voltage

-Long protection distance

-High energy input capacity

-Stable U-I characteristic even after multiple strokes

-Proof against ageing

-Explosion and shatter-resistant design

-Pollution resistant and UV-stable

-Housing resistant to rough handling

-Maintenance free

-Stable against shock and vibration

-High mechanical resistance

Technical Performance

The technical performance of metal-oxide surge arrester is accord with IEC60099-4, IEEE(ANSI)C62.11 and GB11032.

Y5W, Y5C, Yl0W, YI0C Series Porcelain Housing Metal-oxide Surge Arrester

11kV Porcelain Housing Metal-oxide Surge Arrester

Table 1-Main Technical Parameter of Porcelain Housing Metal-oxide Surge Arrester with Series Gaps

Nominal Discharge Current: 5Ka

	Rated Voltage	kV	3	6	9	10	12	15	18	21	24	27	30	33	36
	Nominal discharge current	kA	5	5	5	5	5	5	5	5	5	5	5	5	5
1	Type		Y5C-3	Y5C-6	Y5C-9	Y5C-10	Y5C-12	Y5C-15	Y5C-18	Y5C-21	Y5C-24	Y5C-27	Y5C-30	Y5C-33	Y5C-36
2	Continuous operating voltage	kV	2.55	5.10	7.65	8.40	10.20	12.70	15.30	17.00	19.50	22.00	24.40	26.70	29.00
3	Residual voltage at Lighting impulse 8/20μs	kV	9	18	27	30	36	45	54	63	72	81	90	99	108
4	Power frequency discharge voltage≥	kV	5.5	11	16	18	22	26	33	36	40	45	50	56	61
5	1.2/50μs Impulse discharge voltage≤	kV	9	18	27	30	36	45	54	63	72	81	90	99	108
6	2ms rectangular current withstand	A	100/150	100/150	100/150	100/150	100/150	100/150	100/150	100/150	100/150	100/150	100/150	100/150	100/150
7	4/10μs high current impulse withstand	kA	65	65	65	65	65	65	65	65	65	65	65	65	65
8	Housing insulation level
8.1	-Power frequency, wet	kV	40	60	65	75	95	105	120	125	135	155	170	185	190
8.2	-Lightning impulse	kV	100	110	110	140	140	140	160	170	180	190	200	220	240
9	Creepage distance/rated voltage ratio	mm/kV	≥25	≥25	≥25	≥25	≥25	≥25	≥25	≥25	≥25	≥25	≥25	≥25	≥25

Table 2 Main Technical Parameter of Porcelain Housing Metal-oxide Surge Arrester with Series Gaps

Nominal Discharge Current: 10Ka

	Rated Voltage	kV	3	6	9	10	12	15	18	21	24	27	30	33	36
	Nominal discharge current	kA	10	10	10	10	10	10	10	10	10	10	10	10	10
1	Type		Y10C-3	Y10C-6	Y10C-9	Y10C-10	Y10-12	Y10-15	Y10C-18	Y10C-21	Y10C-24	Y10C-27	Y10C-30	Y10C-33	Y10C-36
2	Continuous operating voltage	kV	2.55	5.10	7.65	8.40	10.20	12.70	15.30	17.00	19.50	22.00	24.40	26.70	29.00
3	Residual voltage at Lighting impulse 8/20μs	kV	9	18	27	30	36	45	54	63	72	81	90	99	108
4	Power frequency discharge voltage≥	kV	5.5	11	16	18	22	26	33	36	40	45	50	56	61
5	1.2/50μs Impulse discharge voltage≤	kV	9	18	27	30	36	45	54	63	72	81	90	99	108
6	2ms rectangular current withstand	A	200/250	200/250	200/250	200/250	200/250	200/250	200/250	200/250	200/250	200/250	200/250	200/250	200/250
7	4/10μs high current impulse withstand	kA	100	100	100	100	100	100	100	100	100	100	100	100	100
8	Housing insulation level
8.1	-Power frequency, wet	kV	40	60	65	75	95	105	120	125	135	155	170	185	190
8.2	-Lightning impulse	kV	100	110	110	140	140	140	160	170	180	190	200	220	240
9	Creepage distance/rated voltage ratio	mm/kV	≥25	≥25	≥25	≥25	≥25	≥25	≥25	≥25	≥25	≥25	≥25	≥25	≥25

11kV Porcelain Housing Metal-oxide Surge Arrester

Table 3 Main Technical Parameter of Porcelain Housing Metal-oxide Surge Arrester with Series Gaps

Nominal Discharge Current: 10Ka

	Rated Voltage	kV	39	42	45	48	51	54	60	66	69	72	75	84	90	96	108	120
	Nominal discharge current	kA	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10
1	Type		Y10W-39	Y10W-42	Y10W-45	Y10W-48	Y10W-51	Y10W-54	Y10W-60	Y10W-66	Y10W-69	Y10W-72	Y10W-75	Y10W-84	Y10W-90	Y10W-96	Y10W-108	Y10W-120
2	Continuous operating voltage	kV	31.5	33.6	36.5	39.0	40.8	42.0	48.0	52.8	55.2	57.0	60.0	67.2	70.0	76.0	84.0	98.0
3	Residual voltage at
3.1	Lighting impulse 8/20μs	kV	103	111	119	127	135	143	159	175	183	191	199	218	222	237	266	295
3.2	-Steep current impulse 1/10μs	kV	117	126	128	139	151	160	178	196	205	214	223	244	249	265	298	330
3.3	-Switchgear impulse 30/60μs(10kA&up)	kV	94	101	102	110	115	119	132	145	152	158	165	181	184	197	221	245
3.4	Switching surge(class 1)	kA	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5
4	Long duration current impulse withstand
4.1	-Line discharge class(10kA&up)		1/2/3
4.2	-2ms rectangular current withstand	A	400/600/1000
5	Operating duty
5.1	-4/10μs high current impulse withstand	kA	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100
6	Housing insulation level
6.1	-Lightning impulse	kV	200	210	210	240	240	240	250	280	290	300	315	350	380	400	450	500
6.2	-Power frequency, wet 1 min	kV	100	110	110	140	140	140	160	170	180	190	200	220	240	250	280	320
7	Partial discharge	pC	＜10
8	Creepage distance/rated voltage ratio	mm/kV	≥31	≥31	≥31	≥31	≥31	≥31	≥31	≥31	≥31	≥31	≥31	≥31	≥31	≥31	≥31	≥31

Overhead Line Accessory

11kV Porcelain Housing Metal-oxide Surge Arrester

Application

Keystone

Usual service condition

Advantage

Technical Performance

Y5W, Y5C, Yl0W, YI0C Series Porcelain Housing Metal-oxide Surge Arrester

Table 1-Main Technical Parameter of Porcelain Housing Metal-oxide Surge Arrester with Series Gaps

Nominal Discharge Current: 5Ka

Table 2 Main Technical Parameter of Porcelain Housing Metal-oxide Surge Arrester with Series Gaps

Nominal Discharge Current: 10Ka

Table 3 Main Technical Parameter of Porcelain Housing Metal-oxide Surge Arrester with Series Gaps

Nominal Discharge Current: 10Ka

Feedback

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Overhead Line Accessory

11kV Porcelain Housing Metal-oxide Surge Arrester

Application

Keystone

Usual service condition

Advantage

Technical Performance

Y5W, Y5C, Yl0W, YI0C Series Porcelain Housing Metal-oxide Surge Arrester

Table 1-Main Technical Parameter of Porcelain Housing Metal-oxide Surge Arrester with Series Gaps

Nominal Discharge Current: 5Ka

Table 2 Main Technical Parameter of Porcelain Housing Metal-oxide Surge Arrester with Series Gaps

Nominal Discharge Current: 10Ka

Table 3 Main Technical Parameter of Porcelain Housing Metal-oxide Surge Arrester with Series Gaps

Nominal Discharge Current: 10Ka

Feedback

Products

Related Products

24kV Polymer Housing Metal-oxide Surge Arrester

24kV Porcelain Housing Metal-oxide Surge Arrester

33kV Polymer Housing Metal-oxide Surge Arrester

11kV Polymer Housing Metal-oxide Surge Arrester

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