The products covers 35kV to 500kV porcelain-housed MOA, 6kV to 500kV polymeric MOA and 35kV to 500kV poly meric line type MOA with series gaps, are used to protect high-voltage equipment in substations, such as transformers, circuit breakers, and bushings, against the effects of overvoltages caused by incoming surges. Such overvoltages can be caused by a direct or nearby lightning strike, an electromagnetic pulse, electrostatic discharge, or switching operations in the power supply system as well as in devices. Some overvoltages are very high in energy. The current from the surge is diverted through the arrester, in most cases to earth. Effective overvoltage protection requires different surge arrester types to be used according to the particular application.

Applied Standards:

• GB 11032 Metal-oxde surge arresters without gaps for AC systems;

• GB/T 16434 High voltage overhead line and power station, transmission substation environmental pollution ares grading and external insulation choice standards;

• JB/T 7617 sf6 Type metal-oxide surge arresters without gaps;

•JB.T8952 Polymer-housed metal oxide surge arresters without gaps for AC systems;

• JB/T 10497 Polymeric housed metal oxide surge arresters with series gap for AC electric power tansmission line;

• IEC 60099-4 Metal-oxide surge arresters without gaps for AC systems

Part Ⅰ: Working Condition

Ambient air temperature: -40°C- + 40°C;

Altitude: S: 2000m;

Frequency: 48Hz-62Hz;

Power frequency voltage applied between terminals of surge arrester must not exceed continuous operating voltage of surge arrester;

Earthquake intensity is less than 8 degree;

Max. wind speed is 35m/s.

Part Ⅱ: Main Characteristics

Superior protective performance:

The metal oxide resistors made by possesses superior nonlinear volt-ampere characteristics and high energy capacity, making a great protective margin of discharge voltages at steep, lightning and switching current surges, and have remarkable effect for limiting overvoltage.

Reliable sealing performance:

During the whole MOA service life, the reliable sealing is ensured by application of weatherproof materials specific sealing design, slight positive pressure design patented and high-sensitive helium mass spectrometric detecting technology.

Excellent ageing performance:

superior ageing-proof performance, high overvoltage absorption capability, stable electrical characteristics, resulting to reliable service peformance.

Secure pressure relief capability:

Pressure relief device, specially designed for power utilities, has reliable pressure relief capability which ensures safe relief inner pressure of MOA in event of failure to prevent anyother failure.

High mechanical strength:

The bending stress of the produst surge arrest should be more than the stress of both the wire pulling and wind power, possessing more than 2.5 times allowance. The bending stress possess more than 1.67 times allowance relative to seismic force. The aseismatic products can stand 9 degree seismic intensity.

Continuous innovation and developmen:

Aiming at worldwide trend of MOA development, constantly devotes herself to development of Hi-tech MOA making us a top-ranking MOA manufacturer capable of supplying MOA of most complete varieties and superior performance in China.

Part Ⅲ: Electrical Characteristics – Phase Arresters for 35kV ~ 500kV Porcelain Housed MOA for AC. System

Usys kVcm․s	Type	Ur kVcm․s	UCCA kVcm․s	Ures ≤kVp			UImA ≥kV	Uref ≥kVcm․s	I2ms A	Lspec mm/kv	H mm	D mm	Weight kg	Units number	Fig No.
				Ures ≤kVp
				1/10	8/20	30/60
35	Y5W-51/134W	51	40.8	154	134	114	73.0	51	400	31	1005	250	78	1	Fig1
35 neutral	Y1.5W-30/80W	30	24	/	80	75	44	30	400	31	1005	250	78	1	Fig1
66	Y5W-84/221W	84	67.2	254	221	188	121	84	600, 800	25/31	1704/1835	310	176/202	1	Fig1
	Y5W-90/235W	90	72.5	270	235	201	130	90	600, 800
	Y10W-90/235W	90	72.5	264	235	201	130	90	600, 800
110	Y10W-96/250W	96	75	280	250	213	140	96	600, 800	25/31	1704/1835	310	176/202	1	Fig1
	Y10W-100/260W	100	78	291	260	221	145	100	600, 800
	Y10W-102/266W	102	79.6	297	266	226	148	102	600, 800
	Y10W-108/281W	108	84	315	281	239	157	108	600, 800
110 neutral	Y1.5W-60/144W	60	48	/	144	135	85	60	400	25/31	1005	250	78/82	1	Fig1
110 neutral	Y1.5W-72/186W	72	58	/	186	174	103	72	400	25/31	1005	250	78/82	1	Fig1
220	Y10W 192/500W	192	150	560	500	426	280	192	600, 800	25/31	3138/3400	850	400/412	2	Fig2
	Y10W 200/520W	200	156	582	520	442	290	200	600, 800
	Y10W-204/532W	204	159	594	532	452	296	204	600, 800
	Y10W-216/562W	216	168.5	630	562	478	314	216	600, 800
220 neutral	Y1.5W-144/320W	144	116	/	320	299	205	144	400, 600	25	1835	310	202	1	Fig1
330	Y10W-288/698W	288	219	782	698	593	408	288	1200	25/31	3732/3992	1120	580/	2	Fig3
330	Y10W-312/760W	312	237	847	760	643	442	312	1200	25/31	3732/3992	1120	580/	2	Fig3
330 neutral	Y1.5W-207/440W	207	166	/	440	410	292	207	600	31	3400	850	412	2	Fig2
500	Y20W-420/1046W	420	318	1170	1046	858	565	420	2000, 2500	25/31	5856/6111	1500	1555/1650	3	Fig4
	Y20W-444/1106W	444	324	1238	1106	907	597	444	2000, 2500
	Y20W-468/1166W	468	330	1306	1166	956	630	468	2000, 2500
500 neutral	Y1.5W-102/260W	102	155	/	260	243	82	102	600	31	1835	310	202	1	Fig1
500 neutral	Y1.5W-96/260W	96	157	/	260	243	77	96	600	31	1835	310	202	1	Fig1
750	Y20W-600/1380W	600	462	1518	1380	1142	810	600	2500	25/31	8024/8884	2500	2353/2553	4	Fig5
750	Y20W-648/1491W	648	498	1639	1491	1226	875	648	2500	25/31	8024/8884	2500	2353/2553	4	Fig5
1000	Y20W-828/1620W	828	658	1782	1620	1460	1130 (4mA)	828	8800	25	11600	3800	6300	5	Fig6

Electrical Characteristics – Phase Arresters for Polymeric MOA for AC. System

A) Typical technical parameters and outline dimensions of 6kV~ 500kV station and distribution type polymeric gapless MOA

Usys kVcm․s	Type	Ur kVcm․s	UCCA kVcm․s	Ures ≤kVp			UImA ≥kV	Uref ≥kVcm․s	I2ms A	Lspec mm/kv	H mm	D mm	Weight kg	Units number	Fig No.
				Ures ≤kVp
				1/10	8/20	30/60
6	YH5WS-10/30W	10	8	34.6	30	25.6	15	10	100	31	257	106	3	1	Fig16
6	YH5WZ-10/27W	10	8	31	27	23	14.4	10	150	31	257	106	3	1	Fig16
10	YH5WS-17/50W	17	13.6	57.5	50	42.5	25	17	100	31	257	106	2	1	Fig16
10	YH5WZ-17/45W	17	13.6	51.8	45	38.3	24	17	150	31	257	106	2	1	Fig16
35	YH5W-51/134W	51	40.8	154	134	114	73	51	400	31	682	140	15	1	Fig17
35 neutral	LYH1.5W-30/80W	30	24	/	80	75	44	30	400	31	1005	250	78	1	Fig1
66	YH5W-84/221W	84	67.2	254	221	188	121	84	600, 800	31	1264	220	62	1	Fig18
66	YH10W-90/235W	90	72.5	264	235	201	130	90	600, 800	31	1264	220	62	1	Fig18
110	YH10W-100/260W	100	78	291	260	221	145	100	600, 800	31	1264	220	62	1	Fig18
	YH10W-102/266W	102	79.6	297	266	226	148	102	600, 800
	YH10W-108/281W	108	84	315	281	239	157	108	600, 800
110 neutral	YH1.5W-60/144W	60	48	/	144	135	85	60	400	31	949	184	32	1	Fig18
110 neutral	YH1.5W-72/186W	72	58	/	186	174	103	72	400	31	949	184	32	1	Fig18
220	YH10W 200/520W	200	156	582	520	442	290	200	600, 800	31	2335	850	124	2	Fig20
	YH10W-204/532W	204	159	594	532	452	296	204	600, 800
	YH10W-216/562W	216	168.5	630	562	478	314	216	600, 800
220 neutral	YH1.5W-144/320W	144	116	/	320	299	205	144	400	31	1856	184	65	2	Fig19
330	YH10W-288/698W	288	219	782	698	593	408	288	1200	31	3530	362	450	2	Fig21
	YH10W-300/727	300	228	814	727	618	425	300	1200	31
	YH10W-306/742	306	233	831	742	630	435	306	1200	31
	YH10W-312/760W	312	237	847	760	643	442	312	1200	31
	YH10W-324/789W	324	246	880	789	668	459	324	1200	31
330 neutral	YH1.5W-207/440W	207	166	/	440	410	292	207	600	31	2335	220	124	2	Fig20
500	YH20W-420/1046W	420	318	1170	1046	858	565	420	2000	31	5000	362	662	3	Fig22
	YH20W-444/1106W	444	324	1238	1106	907	597	444	2000
	YH20W-468/1166W	468	330	1306	1166	956	630	468	2000
500 neutral	YH1.5W-102/260W	102	82	/	260	243	155	102	600	31	1264	220	62	1	Fig18
500 neutral	YH1.5W-96/260W	96	77	/	260	243	137	96	600	31	1264	220	62	1	Fig18

B) Typical technical parameters and outline dimensions of 35kV 500kV line protection polymeric gapless MOA

Usys kVcm․s	Type	Ur kVcm․s	UCCA kVcm․s	Ures ≤kVp			UImA ≥kV	Uref ≥kVcm․s	I2ms A	Lspec mm/kv	H mm	D mm	Weight kg	Units number	Fig No.
				Ures ≤kVp
				1/10	8/20	30/60
35	YH5WX-51/134W	51	40.8	154	134	114	73	51	400	31	661	140	13	1	Fig23
66	YH10WX-96/250W	96	75	288	250	213	140	96	600, 800	31	1256	210	48	1	Fig24
110	YH10WX-108/281W	108	84	315	281	239	157	108	600, 800	31	1256	210	48	1	Fig24
110	YH10WX-114/297W	114	89	341	297	252	165	114	600, 800	31	1256	210	48	1	Fig24
220	YH10WX-216/562W	216	168.5	630	562	478	314	216	600, 800	31	2472	850	99	2	Fig25
330	YH10WX-312/760W	312	237	847	760	643	442	312	1200	25	3630	1200	256	3	Fig26
330	YH10WX-324/789W	324	246	880	789	668	459	324	1200	25	3630	1200	256	3	Fig26
500	YH20WX-444/1106W	444	324	1238	1106	907	597	444	1800	25	5098	2000	405	3	Fig27
500	YH20WX-468/1166W	468	330	1306	1166	956	630	468	1800	25	5098	2000	405	3	Fig27

C) Typical technical parameters and outline dimensions of 35kV 500kV polymeric with series gaps MOA

Usys kVcm․s	Type	MOA body						MOA			Hmm	D mm	Weight kg	Units number	Fig No.	Remark
		Ur kVcm․s	Ures ≤kVp		UImA ≥kV	Uref ≥kVcm․s	I2ms A	lmin ≥kVcm․s	Uinpspv ≥kVcm․s	Gap spac emm
			1/10	8/20

35	YH5CX-42/120	42	132	120	60	42	250	82	240	220±20	661 1120	140	20 24	1	Fig29 Fig30	Air gap Insulator support clearance

110	YH10CX-84/220	84	252	220	123	84	400	185	525	550±50	1100/ 2100	168	39/46	1	Fig29 Fig30	Air gap Insulator support clearance
	YH10CX-90/260	90	292	260	130	90	400
	YH10CX-96/280	96	314	280	140	96	400
	YH10CX-108/256	108	358	320	160	108	400
220	YH10CX-180/520	168	584	520	260	168	600	370	900	900±50	2100/ 3200	168	72/85	2	Fig31 Fig32	Air gap Insulator support clearance
	YH10CX-192/560	192	628	560	280	192	600
	YH10CX-216/640	216	716	640	320	216	600
500	YH20CX-396/1050	396	1171	1050	561	396	1200	567	1760	1650±150	3738/ 6130	249 225	292 270	3	Fig33 Fig34	Air gap Insulator support clearance
	YH20CX-396/1050	396	1171	1050	561	396	1200

Typical technical parameters and outline dimensions of gapless MOA for electrified railway protection

Usys kVcm․s	Type	Ur kVcm․s	UCCA kVcm․s	Ures ≤kVp			UImA ≥kV	Uref ≥kVcm․s	I2ms A	Lspec mm/kv	H mm	D mm	Weight kg	Units number	Fig No.
				Ures ≤kVp
				1/10	8/20	30/60
27.5	Y5WT-42/120W	42	34	138	120	98	65	42	400	31	1005	250	78	1	Fig1
	T10WT-42/140W	42	34	157	140	119	65	42	400	31	1005	250	78	1	Fig1
	YH5WT-42/120W	42	34	138	120	98	65	42	400	31	682	140	15	1	Fig18
	YH10WT-42/105	42	31.5	118	105	89	58	40	400	31	562	150	17	1	Fig18
55	Y5WT-84/240W	84	68	276	240	196	130	84	400	31	1835	310	202	1	Fig1
	Y10WT-84/260W	84	68	291	260	221	130	84	400		1835	310	202		Fig1
	YH5WT-84/240W	84	68	276	240	196	130	84	600		1264	220	62		Fig18
	YH10WT-84/240W	84	68	276	240	196	130	84	600		1264	220	62		Fig18
110	Y5WT-100/260W	100	78	299	260	221	145	100	600	31	1835	310	202	1	Fig1
	Y10WT-100/275W	100	73	316	275	234	145	100	600		1835	310	202		Fig1
	YH5WT-100/260W	100	78	299	260	221	145	100	800		1264	220	62		Fig18
	YH10WT-100/275W	100	73	316	275	234	145	100	800		1264	220	62		Fig18

Typical technical parameters and outline dimensions of MOA for protecting electric rotating machines

Destination	Type	Ur kVcm․s	UCCA kVcm․s	Ures ≤kVp			UImA ≥kV	Uref ≥kVcm․s	I2ms A
				Ures ≤kVp
				1/10	8/20	30/60
Generator	YH5W-4/9.5	4	3.2	10.7	9.5	7.6	5.7	3.8	400
	YH5W-8/18.7	8	6.3	21	18.7	15	11.2	7.7
	YH5W-13.5/31	13.5	10.5	34.7	31	25	18.6	13
	YH5W-17.5/40	17.5	13.8	44.8	40	32	24.4	17
	YH5W-20/45	20	15.8	50.4	45	36	28	19.5
	YH5W-23/51	23	18.0	57.2	51	40.8	31.9	21.9
	YH5W-25/56.2	25	20.0	62.9	56.2	45.0	35.4	24.3
Motor	YH2.5W-4/9.5	4	3.2	10.7	9.5	7.6	5.7	3.8	400
	YH2.5W-8/18.7	8	6.3	21	18.7	15	11.2	7.7
	YH2.5W-13.5/31	13.5	10.5	34.7	31	25	18.6	13
Neutral of electric machine	YH1.5W-2.4/6	2.4	1.9	-	6.0	5.0	3.4	2.4	400
	YH1.5W-4.8/12	4.8	3.8	-	12.0	10.0	6.8	4.8
	YH1.5W-8/19	8	6.4	-	19.0	15.9	11.4	8
	YH1.5W-10.5/23	10.5	8.4	-	23.0	19.2	14.9	10.5
	YH1.5W-12/26	12	9.6	-	26.0	21.6	17.0	12
	YH1.5W-13.7/29.2	13.7	11.0	-	29.2	24.3	19.5	13.7
	YH1.5W-15.2/31.7	15.2	12.2	-	31.7	26.4	21.6	15.2

Typical technical parameters and outline dimensions of gapless MOA for shunt compensation capacitor bank

Usys kVcm․s	Type	Ur kVcm․s	UCCA kVcm․s	Ures ≤kVp		UImA ≥kV	Uref ≥kVcm․s	I2ms A	Lspec mm/kv	H mm	D mm	Weight kg	Units number	Fig No.
				Ures ≤kVp
				8/20	30/60
6	YH5WR-10/27W	10	8.0	27.0	21.0	14.4	10	400	31	297	108	3	1	Fig16
10	YH5WR-12/32.4W	12	9.6	32.4	25.2	17.4	12	400	31	297	108	3.4	1	Fig16
	YH5WR-15/40.5W	15	12.0	40.5	31.5	21.8	15
	YH5WR-17/46W	17	13.6	46	35	24	17
35	YH5WR-51/134W	51	40.8	134	105	73	51	400-2500	31	682	140	15	1	Fig18
	YH10WR-52.7/134W	52.7	42.2	134	105	74.5	52.7			680	210	34
	YH10WR-54/134W	54	43.2	134	105	76	54			844	238	54
	Y5WR-51/134W	51	40.8	134	105	73	51	400-2500	31	1005	250	78	1	Fig1
	Y10WR-52.7/134W	52.7	42.2	134	105	74.5	52.7			1175	290	140
	Y10WR-54/134W	54	43.2	134	105	76	54			1192	345	205
110	Y10WR-84/221W	84	67.2	221	176	121	84	600-2000	25/31	1704	310	176	1	Fig1
110	Y10WR-90/236W	90	72.5	236	190	130	90	600-2000	25/31	2032	351	202	1	Fig1

Technical parameters for static Var compensation device (SVC) of Complete MOA

Usys kVcm․s	Type	Ur kVcm․s	UCCA kVcm․s	UImA ≥kV	Uref ≥kVcm․s	I2ms A	Ures ≤kVp 8/20


35	Y0.5WR-45/106	45	41.26	76.4	45	600	106
	Y0.5WR-45/110	45	38.8	76.3	45	1200	110
	Y0.5WR-42/98.7	42	34.8	69.6	42	600	98.7
	Y0.5WR-36/81.6	36	28.36	56.6	36	600	81.6
	Y0.5WR-42/92	42	23	60	42	600	92
	Y0.5WR-24/56.2	24	23	37.8	24	600	56.2

Technical parameters of monitors

Usys kVcm․s	Type	In 8/20 kAp	Id 8/20 Ap	I2ms Ap	High cur. withstand 4/10 kAp	Ures ≤kVp	Basic scale of current mAcm․s	Weight kg


6-220	JCQ3A-10/800	10	50	800	100	1.5	0-2	3
330	JCQ3A-10/1500	10	50	1500	100	1.5	0-5	3
500	JCQ3A-20/2000	20	50	2000	20	50	0-5	3
750	JCQ3C-20/2500	20	50	2500	20	50	0-6 (Wide angle)	3.5

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6kV To 500kV Outdoor HV AC Surge Arrest