Y5W / Y10W / Y5C / Y10C Porcelain Bushing Arrester

The Y5W, Y10W, Y5C, and Y10C porcelain bushing arresters are built to meet the demanding conditions of modern power systems. Each unit features a high-strength porcelain body that stands up to extreme temperatures, mechanical stress, and environmental exposure over long periods.

Designed for seamless integration with transformers, breakers, and other equipment, these bushing-type arresters offer reliable surge protection while maintaining a compact and maintenance-free structure. The Y5C and Y10C variants include extended creepage distances, making them ideal for installations in areas with high pollution or coastal climates.

With a balance of rugged construction and electrical reliability, this series is a trusted solution for utilities and industrial applications alike.

Y5W / Y10W / Y5C / Y10C Porcelain Bushing Arrester

Nominal Discharge Current 5kA Porcelain Housed Metal-oxide Lightning Arrester with series gap (Export)

Type	Rated voltage	Maximum continuous operation voltage	Sparkover voltage(KV)		8/20μs Lightning Current impulse	2000μs Square wave current impulse withstand	4/10μs High current impulse
	Rated voltage	Maximum continuous operation voltage	Power Frequency ≥	1.2/50μs Lighting impulse≤	8/20μs Lightning Current impulse	2000μs Square wave current impulse withstand	4/10μs High current impulse
	KV(r.m.s)	KV(r.m.s)	KV(r.m.s)	kV(crest)	kV(crest)	A (crest)	kA(crest)
Y5C-3	3	2.55	5.0	7.8	9	100	65
Y5C-6	6	5.1	10.0	15.5	18	100	65
Y5C-9	9	7.65	16.5	24.5	27	100	65
Y5C-10	10	8.4	18.0	27.2	30	100	65
Y5C-12	12	10.2	21.0	32.6	36	100	65
Y5C-15	15	12.7	25.0	38.8	45	100	65
Y5C-18	18	15.3	31.0	48.1	54	100	65
Y5C-21	21	17.0	34.0	52.7	63	100	65
Y5C-24	24	19.5	39.0	60.5	72	100	65
Y5C-27	27	22.0	45.0	69.8	81	100	65
Y5C-30	30	24.4	50.0	77.5	90	100	65
Y5C-33	33	26.7	55.0	85.3	99	100	65
Y5C-36	36	29.0	60.0	93.0	108	100	65
Y5C-42	42	34.0	70.0	108.5	126	100	65

Nominal Discharge Current 10kAPorcelain Housed Metal-oxide Lightning Arrester with series gap (Export)

Type	Rated voltage	Maximum continuous operation voltage	Sparkover voltage(KV)		8/20μs Lightning Current impulse	Line discharge class	4/10μs High current impulse
	Rated voltage	Maximum continuous operation voltage	Power Frequency ≥	1.2/50μs Lighting impulse≤	8/20μs Lightning Current impulse		4/10μs High current impulse
	KV(r.m.s)	KV(r.m.s)	KV(r.m.s)	kV(crest)	kV(crest)		kA(crest)
Y10C-3	3	2.55	5.0	7.8	9	1	100
Y10C-6	6	5.1	10.0	15.5	18	1	100
Y10C-9	9	7.65	16.5	24.5	27	1	100
Y10C-10	10	8.40	18.0	27.2	30	1	100
Y10C-12	12	10.2	21.0	32.6	36	1	100
Y10C-15	15	12.7	25.0	38.8	45	1	100
Y10C-18	18	15.3	31.0	48.1	54	1	100
Y10C-21	21	17.0	34.0	52.7	63	1	100
Y10C-24	24	19.5	39.0	60.5	72	1	100
Y10C-27	27	22.0	45.0	69.8	81	1	100
Y10C-30	30	24.4	50.0	77.5	90	1	100
Y10C-33	33	26.7	55.0	85.3	99	1	100
Y10C-36	36	29.0	60.0	93.0	108	1	100
Y10C-42	42	34.0	70.0	108.5	126	1	100

Note:
Models beginning with "Y" refer to metal oxide lightning arresters with a porcelain housing. If the arrester uses a polymer (composite) housing, the model code begins with "YH" instead.

Technical Specifications of Metal Oxide Lightning Arrester

Service condition	Type	MOA Rated Voltage	System Nominal Voltage (kV)	Continous Operation Voltage (kV)	DC Min U1mA reference voltage (kV) ≥	Residual voltage (kV)≤			2000μs Square wave current impulse withstand (A)	4/10μs High Current impulse (kA)
Service condition	Type	MOA Rated Voltage	System Nominal Voltage (kV)	Continous Operation Voltage (kV)	DC Min U1mA reference voltage (kV) ≥	1/4μs Steep Current impulse	8/20μs Lightning Current impulse	30/60μs Switching current impulse	2000μs Square wave current impulse withstand (A)	4/10μs High Current impulse (kA)
Low voltage Distribution 5KA Substation (Z)	YH1.5W-0.28/1.3	0.28	0.22	0.24	0.6	/	1.3	/	75	25
	YH1.5W-0.5/2.6	0.5	0.38	0.42	1.2	/	2.6	/	75	25
	YH5WS-3.8/17	3.8	3	3.2	7.5	19.6	17.0	14.5	100	65
	YH5WS-5/17	5	3	4.0	7.5	19.6	17.0	14.5
	XH5WS-7.6/30	7.6	6	4.0	15	34.5	30.0	25.5
	YH5WS-10/30	10	6	8.0	15	34.6	30.0	25.5
	YH5WS-17/50	17	10	13.6	25	57.5	50.0	42.5
	YH5WZ-3.8/13.5	3.8	3	3.2	7.2	14.5	13.5	11.5	200	65
	YH5WZ-7.6/27	7.6	6	4.0	14.4	31	27	23
	YH5WZ-10/27	10	6	8.0	14.4	31	27	23
	YH5WZ-17/45	17	10	13.6	24	51.8	45	38.3
	YH5WZ-42/134	42	35	23.4	73	154	134	114	400	100
	YH5WZ-51/134	51		40.8	73	154	134	114
	YH5WZ-52.7/134	52.7		42.2	73	154	134	114
	YH5WZ-54/134	54		43.2	73	154	134	114
	YH5WZ-84/221	84	66	67.2	121	254	221	188	600	100
	YH5WZ-90/224	90		72.5	130	258	224	190
	YH5WZ-94/224	94		75.5	134	270	234	198
	YH5WZ-96/250	96	110	75	140	287	250	212	600	100
	YH5WZ-100/266	100		78	145	299	260	221
	YH5WZ-102/266	102		80	148	305	266	226
	YH5WZ-108/281	108		84	157	323	281	239
	YH5WZ-116/302	116		88.2	168	347	302	256
10KA Substation (Z)	YH10WZ-51/134	51	35	40.8	73	154	134	114	400	100
	YH10WZ-52.7/134	52.7	35	42.2	73	154	134	114	400	100
	YH10WZ-72/184	72	66	57	105	211	184	165	600	100
	YH10WZ-75/223	75		60	127	256	223	190
	YH10WZ-75/230	75		60	127	265	230	196
	YH10WZ-75/250	75		60	127	288	250	213
	YH10WZ-84/215	84		67.2	122	245	215	181
	YH10WZ-90/235	90		72.5	130	264	235	201
	YH10WZ-96/250	96	110	75	140	280	250	212	600	100
	YH10WZ-100/266	100		78	145	291	260	221
	YH10WZ-102/266	102		79.6	148	297	266	226
	YH10WZ-108/281	108		84	157	315	281	239
	YH10WZ-116/302	116		88	168	338	302	257
	YH10WZ-120/300	120		96	174	335	300	270
	YH10WZ-126/328	126		100.8	183	367	328	279
	YH10WZ-150/400	150		115	230	444	400	352

Service condition	Type	MOA Rated Voltage (kV)	System Nominal Voltage (kV)	Continous Operation Voltage (kV)	DC Min U1mA reference voltage (kV) ≥	Residual voltage (kV)≤			2000μs Square wave current impulse withstand(A)	4/10μs High Current impulse (kA)
Service condition	Type	MOA Rated Voltage (kV)	System Nominal Voltage (kV)	Continous Operation Voltage (kV)	DC Min U1mA reference voltage (kV) ≥	1/4μs Steep Current impulse	8/20μs Lightning Current impulse	30/60μs Switching current impulse	2000μs Square wave current impulse withstand(A)	4/10μs High Current impulse (kA)
10KA Substation (Z)	YH10WZ-192/500	192	220	150	280	560	500	426	600,800, 1000	100
	YH10WZ-200/520	200		156	290	582	520	442
	YH10WZ-204/532	204		159	296	594	532	452
	YH10WZ-216/562	216		168.5	314	630	562	478
20KA Substation	YH20WZ-200/566	200	220	152	304	634	566	464	1200	100
Neutral point of transformer	YH1.5W-30/80	30	35	34	44	/	80	76	400	65
	YH1.5W-55/132	55	110	43	79	/	132	126
	YH1.5W-60/144	60		48	85	/	144	135
	YH1.5W-72/186	72		58	103	/	186	174
	YH1.5W-73/200	73		58	105	/	200	174	600	100
	YH1.5W-144/320	144	220	116	205	/	320	299
	YH1.5W-207/440	207	330	166	292	/	440	410
Capacitor (R)	YH5WR-3.8/13.5	3.8	3	2.0	7.2	/	13.5	10.5	400	65
	YH5WR-5/13.5	5	3	3.8	7.2	/	13.5	10.5
	YH5WR-10/27	10	6	8.0	14.4	/	27	20.8
	YH5WR-17/45	17	10	13.6	24	/	45	38.3
	YH5WR-51/134	51	35	40.8	73	/	134	105
	YH5WR-84/221	84	66	67.2	121	/	221	176	600	100
	YH5WR-90/235	90	66	72.5	130	/	235	190	600	100
Motor (D)	YH2.5WD-4/9.5	4	3.15	3.2	5.7	10.7	9.5	7.6	400	65
	YH2.5WD-8/18.7	8	6.3	6.3	11.2	21.0	18.7	15
	YH2.5WD-12.7/31	12.7	9.8	9.8	18.6	34.7	31	25
	YH2.5WD-13.5/31	13.5	10.5	10.5	18.6	34.7	31	25.0
Neutral point of motor (D)	YH1.5WD-2.4/6	2.4	3.2	1.9	3.4	/	6	5	200 300 400	65，100
	YH1.5WD-4.8/12	4.8	6.3	3.8	6.8	/	12	10
	YH1.5WD-8/19	8	10.5	6.4	11.4	/	19	15.9
	YH1.5WD-12/26	12	15.75	9.6	17	/	26	21.6
	YH1.5WD-13.7/29.2	13.7	18	11	19.5	/	29.2	24.3
Generator (D)	YH5WD-4/9.5	4	3.15	3.2	5.7	10.7	9.5	7.6	400	65
	YH5WD-8/18.7	8	6.3	6.3	11.2	21.0	18.7	15.0
	YH5WD-13.5/31	13.5	10.5	10.5	18.6	34.7	31	25.0
	YH5WD-17.5/40	17.5	13.8	13.8	24.4	44.8	40	32.0
	YH5WD-20/45	20	15.8	15.8	28.0	50.4	45	35.0
	YH5WD-23/51	23	18	18	31.9	57.2	51	40.8
	YH5WD-25/56.2	25	20	20	35.4	62.9	56.2	45.0
Railway Traction	YH5WT-17/45	17	10	13.6	24.0	51.8	45	38.3	200	65
	YH5WT-42/105	42	27.5	34	60	118	105	89	400	65
	YH5WT-42/120	42		34	65	138	120	98
	YH10WT-42/120	42		34	65	138	120	98
	YH5WT-84/240	84	55	68	130	276	240	196
	YH10WT-100/260	100	110	73	145	291	260	221	600	100
	YH10WT-200/520	200	220	146	290	582	520	442	600	100

To help users select the right product and avoid confusion during installation or operation, we’ve compiled a comparison of both old and new model numbers along with their corresponding technical specifications. As zinc oxide arresters are currently transitioning from the previous national standard to the updated version, this reference aims to provide clarity and ensure a smooth product selection process.

Application place	Rated voltage of system	New edition standard GB11032-2010		Old edition standard GB11032-1989		2ms Square-wave current
Application place	Rated voltage of system	Type	Continuous operating voltage(kV)	Type	Continuous operating voltage(kV)	2ms Square-wave current
power distribution	3	YH5WS-5/15	4.0	HY5WS-3.8/15	2.0	75
	6	YH5WS-10/30	8.0	HY5WS-7.6/30	4.0	75
	10	YH5WS-17/50	13.6	HY5WS-12.7/50	6.6	75
power station	3	YH5WZ-5/13.5	4.0	HY5WZ-3.8/13.5	2.0	150
	6	YH5WZ-10/27	8.0	HY5WZ-7.6/27	4.0	150
	10	YH5WZ-17/45	13.6	HY5WZ-12.7/45	6.6	150
	35	YH5WZ-51/134	40.8	HY5WZ-42/134	23.4	150
	110	YH10W-96/235	75	HY10W-96/238	73	600
		YH10W-100/260	78	HY10W-100/260	73	600
		YH10W-102/266	79.6	HY10W-102/255	73	600
		YH10W-108/281	84	HY10W-108/268	73	600
	220	YH10W-192/500	150	HY10W-192/476	146	600
		YH10W-200/520	156	HY10W-200/520	146	600
		YH10W-204/532	159	HY10W-204/532	146	600
		YH10W-216/562	168.5	HY10W-216/562	146	600
capacitors	3	YH5WR-5/13.5	4.0	HY5WR-3.8/13.5	2.0	400
	6	YH5WR-10/27	8.0	HY5WR-7.6/27	4.0	400
	10	YH5WR-17/45	13.6	HY5WR-12.7/45	6.6	400
	35	YH5WR-51/134	40.8	HY5WR-42/134	23.4	400
	35	YH10WR-51/134	40.8	HY10WR-42/134	23.4	400
motor	3.15	YH2.5WD-4/9.5	3.25	HY2.5WD-3.8/9.5	2.0	200
	6.3	YH2.5WD-8/18.7	6.3	HY2.5WD-7.6/19	4.0	200
	10.5	YH2.5WD-13.5/31	10.5	HY2.5WD-12.7/31	6.6	200
generator	3.15	YH2.5WD-4/9.5	3.25	HY5WD-3.8/9.5	2.0	400
	6.3	YH5WD-8/18.7	6.3	HY5WD-7.6/19	4.0	400
	10.5	YH5WD-13.5/31	10.5	HY5WD-12.7/31	6.6	400
	13.8	YH5WD-17.5/40	13.8	HY5WD-16.7/40	9.8	400
	15.75	YH5WD-20/45	15.8	HY5WD-19/45	15.0	400
Neutral point of motor	3.15	YH1.5WD-2.4/6	1.9	HY1WD-2.3/6		200
	6.3	YH1.5WD-4.8/12	3.8	HY1WD-4.6/12		200
	10.5	YH1.5WD-8/19	6.4	HY1WD-7.6/19		200

Note:
The main updates in the new standard involve changes to the rated voltage and continuous operating voltage of lightning arresters. Currently, both new “HY” and old “YH” model codes are in common use — where “Y” stands for zinc oxide arrester and “H” indicates a composite housing.
If you're unsure about which model to choose, please don’t hesitate to contact us for assistance.