Transmission Line Metal Oxide Surge Arrester

Type: Power Source Arrester Installation: Parallel Arrester Size: Meidum Shape: Spiral Certification: ISO9001 Features: Reduced Line Maintenance,Good Sealing,Explosion-Pr Origin: Jiangyin Yunfeng, China Structure: Zinc Oxide Arrester Application: AC/DC System Operation Voltage: High Voltage Material: ZnO Function: Protect Electrical Devices in a.C.Power System Trademark: YF Metal Oxide Surge Arrester(MOA) without Gaps for A.C.Sytems
Product Overview
Line-suspended type polymeric housed MOA of 10-220kv range can be used in area where lightning activity is frequent,soil resistance is high,or tower-footing impedance is high and difficult to lower the soil resistance.It can improve the lightning protection level and greatly minimize problems that may bring about by lightning strikes.

Structure and technical performance
Under normal conditions,when there is a lightning strike,lightning current and operating over-voltage current pass through the line-suspended polymeric housed MOA of 10-110kV range,the disconnector will not be activated due to the special heat-induced separating device;but if the surge arrester is malfunctioning,the disconnector will be activated and cut off the connection with transmission line automatically,thus ensures the continuous power supply.The system's maintenance-free is realized.

Line suspended polymeric housed MOA with serial gap of 110-220kV range includes ZnO surge arrester and serial gap.during a lightning strike,when lightning current pass through,the serial gap come into operation,it reduces the electrical potential difference between tower top and line,prevent insulator chain flashover and line power switch off.The serial gap can blank-off automatically after the lightning current disappeared.


Gapless arrester electrical parameter

Type	Rated voltage	MCOV	Residual voltge(kv)			Wave impluse withstand current 2000µ S square	Current impluse  4/10µ S high
			Steep impluse current	Switching impluse current	8/20 µ Lightning impluse current
YH10W-3	3	2.55	9.5	7.7	9	250	100
YH10W-6	6	5.1	19.5	15.4	18	250	100
YH10W-9	9	7.65	28.5	23.1	27	250	100
YH10W-10	10	8.4	36	30	23	250	100
YH10W-11	11	9.4	40	33	30	250	100
YH10W-12	12	10.2	38.0	30.8	36	250	100
YH10W-15	15	12.7	47.5	38.5	45	250	100
YH10W-18	18	15.3	57.0	46.2	54	250	100
YH10W-21	21	17.0	66.5	53.9	63	250	100
YH10W-24	24	19.2	76.0	61.6	72	250	100
YH10W-27	27	21.9	85.5	69.3	81	250	100
YH10W-30	30	24.4	95.0	76.5	90	250	100
YH10W-33	33	26.8	104.5	84.7	99	250	100
YH10W-36	36	29	114.0	92.4	108	250	100
YH10W-42	42	34.1	132.3	100.1	126	250	100
YH10W-48	48	39	152.0	126.0	150	250	100
YH10W-54	54	43	171.0	139.0	162	250	100
YH10W-60	60	48	208.0	160.0	180	250	100
YH10W-66	66	52.8	230.0	172.0	198	250	100

  Note:Please drop "H" if it is porcelain arrester.
 

Technical Characteristics of line-suspended MOA
 

Type of MOA		Usys	MOA Urat	Umcov	Ures ≤kV(P)			50%	1mA Uref ≥kV	2msI2ms A	4/10µS high current impulse withstand(p)kA	Height of serial gapsh mm	Fig. (P34-36)
		KV(r.m.s)			Steep	Lightning	Switching
Without Gaps	HY5WX-17/50	10	17	13.6	57.5	50	42.5	/	25	150	65	/	3
	HY5WX-51/134 HY5WX-54/134	35	54	40.8 43.2	154	134	114	/	76 77	400	65	/	11
	HY10WX-102/265 HY10WX-108/281 HY10WX-114/300 HY10WX-120/320 HY10WX-126/328	110	102 108 114 120 126	81.6 86.4 91.2 96.0 100.8	297 314 336 358 367	265 281 300 320 328	225 239 255 272 279	/	152 164 173 184 190	600	100	/	12
	HY10WX-200/520	220	200	156	582	520	442	/	290	800	100	/	14A
With Serial Gaps	HY10CX-84/220 HY10CX-96/260 HY10CX-108/281	110	84 96 108	67.2 76.8 86.4	276 299 314	240 260 281	204 221 239	560	132 145 164	600	100	550±50	13
	HY10CX-168/480 HY10CX-192/520 HY10CX-216/562	220	168 192 216	134.4 153.6 172.8	552 598 628	480 520 562	408 442 478	560 560 960	264 290 328	800	100	900±50	14B

Abbreviations given in Tables
Usys---Nominal system voltage
Umcov---Continuous operating voltage
Urat---Rated voltage of MOA
Ures--Residual voltage of MOA
U1mA---Reference voltage at 1mA d.c. Current
Uref---a.c. Reference voltage atresistive currnt1mA
12ms2ms---2ms rectangular current withstand
Uimp.spv---Impulse sparkover voltage
Uacsp---Power frequency discharge voltage
Hovrl---Overrall height
Hunit---Unit height
Hbas---Insulating base height
Dmax---Maximum shell diameter
Lspec---Specific creepage path
 

 

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Product Categories : MOA Without Gaps