Name: China Surge Arrester‑220kV Substation Composite with Grading Ring Manufacturers Suppliers Factory - Jasco Electric
Brand: Jasco
SKU: 319629409

Product Description

This 220 kV composite-insulated surge arrester is primarily designed to limit lightning and switching overvoltages, thereby protecting critical power equipment such as transformers, busbars, and circuit breakers. It is suitable for outdoor installation in 220 kV high-voltage substations and power transmission and distribution systems.

Internally, This composite-insulated surge arrester (220 kV, substation class) utilizes gapless zinc oxide (ZnO) valve blocks characterized by excellent non-linear voltage-current characteristics and high discharge capacity; these blocks conduct rapidly during overvoltage events to limit residual voltage and minimize damage to the insulation systems of power equipment. Externally, it is equipped with a grading ring to improve electric field distribution.

The exterior features High-Temperature Vulcanized (HTV) silicone rubber, which offers excellent hydrophobicity, UV resistance, and pollution resistance, making it suitable for outdoor operating environments characterized by dust, high humidity, intense sunlight, and industrial pollution.

Compared to traditional porcelain-housed arresters, composite-insulated arresters are lighter, resulting in savings on installation and labor costs, while also offering superior seismic performance.

The grading ring optimizes the electric field distribution at the terminals and reduces local electric field concentration, thereby enhancing the operational stability of the external insulation.

This composite-insulated surge arrester (220 kV, substation class) incorporates a pressure-relief and explosion-proof design; in the event of an internal fault, internal pressure is released through a relief channel, reducing the risk of housing rupture and the escalation of the fault.

The product is designed, manufactured, and tested in accordance with applicable IEC standards, with specific technical requirements defined in the product specifications. Optional accessories - such as discharge counters and online leakage current monitoring devices - are available to meet project needs, enabling operators to monitor the arrester's status and conduct inspections, condition assessments, and preventive maintenance, thus ensuring the long-term reliable operation of high-voltage substations and power infrastructure.

Product Parameters

Model	Rated voltage (KV r.m.s)	Continuous operating voltage (KV r.m.s)	Lightening impulse residual voltage under nominal discharge current (≤KVp)	Line discharge class	Creepage distance (mm)	2ms square wave impulse current withstands (A)	4/10 μ high current impulse Withstands (KAₚ)
Y10W-6	6	5.1	18	1	280	250	100
Y10W-9	9	7.65	27	1	320	250	100
Y10W-12	12	10.2	36	1	320	250	100
Y10W-15	15	12.75	45	1	450	250	100
Y10W-18	18	15.3	54	1	450	250	100
Y10W-21	21	16.8	63	1	450	250	100
Y10W-24	24	19.2	72	1	510	250	100
Y10W-27	27	21.6	81	1	510	250	100
Y10W-30	30	24	90	1	890	250	100
Y10W-33	33	26.4	99	1	890	250	100
Y10W-36	36	28.8	108	1	890	250	100
Y10W-42	42	33.6	126	2	1256	400	100
Y10W-48	48	39	139	2	1256	400	100
Y10W-54	54	42	160	2	1256	400	100
Y10W-60	60	48	178	2	1440	400	100
Y10W-66	66	52.8	196	2	1440	400	100
Y10W-72	72	57	214	2	1440	400	100
Y10W-84	84	67.2	244	2	2200	400	100
Y10W-90	90	72.5	249	2	2200	400	100
Y10W-96	96	75	265	3	3350	800	100
Y10W-108	108	84	281	3	3350	800	100
Y10W-120	120	96	300	3	3948	800	100
Y10W-150	150	120	416	3	4400	800	100
Y10W-200	200	156	520	3	6700	800	100
Y20W-108	108	84	281	3	3555	800	100
Y20W-120	120	96	300	3	4106	800	100
Y20W-150	150	120	416	3	4400	800	100
Y20W-200	200	156	520	3	6700	800	100
Y20W-444	444	324	1106	4	17052	2000	100

Our Product Advantage

01/

Factory-Direct Sales & Comprehensive Product Range

We offer a full series of composite and porcelain-housed surge arresters (such as Y10W and Y20W models) covering voltage ratings from 6kV to 444kV, providing a one-stop solution.

02/

High-Performance, Stable Zinc Oxide (ZnO) Varistors

Utilizing high-energy MOV varistors, our products feature low residual voltage and high discharge capacity, effectively protecting against lightning and switching overvoltages.

03/

Multiple Housing Material Options (Silicone Rubber or Porcelain)

HTV silicone rubber models offer excellent hydrophobicity, UV resistance, and resistance to impact and scratches; porcelain models provide stable performance without the risk of surface chalking, making them suitable for outdoor installation across diverse geographical environments and pollution levels.

04/

Proven Export Capabilities

With a business footprint spanning the Middle East, Africa, Southeast Asia, and South America, we maintain stable production capacity and reliable delivery schedules; English technical documentation, specifications, and brochures are provided to ensure smooth and efficient communication.

05/

IEC Standard Compliance

All products undergo rigorous full-item routine testing before leaving the factory; factory inspection reports are available to meet domestic tender and project acceptance requirements.

06/

Customized Services

Creepage distances can be tailored for high-altitude, windy/sandy, or high-salinity environments; neutral packaging and OEM services are also available.

07/

Excellent Cost-Performance Ratio

Our factory-direct model makes us an ideal choice for large-scale power grid projects and contractors requiring bulk procurement.

Product Details

FAQ

Q1: What standards do your surge arresters meet?

A1: Yueqing JASCO Electrical surge arrestors are manufactured and tested to strict IEC standards; each unit undergoes a full set of sequential inspections before leaving the factory.

Q2: What voltage do you recommend?

A2: We offer a full range from 6kV to 444kV, including the Y10W and Y20W series. Options include composite and porcelain models, as well as station-class arresters equipped with gradation rings.

Q3: How should I choose between silicone rubber and porcelain-cork arrests?

A3: HTV silicone rubber models are lightweight, explosion-resistant, and hydrophobic/pollution-resistant, making them ideal for outdoor areas with salt spray or heavy contamination. Porcelain models offer UV resistance, no risk of fading, and have a long service life, making them suitable for permanent substation installations.

Q4: Do you offer customization?

A4: Yes. We can extend creep distances to suit high altitude, high wind, or highly polluted environments. Accessories such as sorting rings, discharge meters, and leak current monitors are available. We also support neutral packaging and OEM branding.

Q5: What are the payment terms and deadlines?

A5: Standard terms require a 30% down payment, but terms are negotiable for long-term partners. With sufficient production capacity, standard orders take 15 working days, and priority scheduling is available for urgent orders.

Q6: Can you provide samples for testing?

A6: Yes, there are samples. Production takes 7–10 days, and the buyer pays the shipping; however, the sample price can be deducted from the total order price when the total order reaches the agreed quantity.

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