Metal Oxide Lightning Arrester in Electrical Substation

Wenzhou XiFa Electric Power Equipment Co.,Ltd adopts high performance zinc oxide valve disc to produce each metal oxide lightning arrester in electrical substation. In Wenzhou XiFa Electric Power Equipment Co.,Ltd, the each metal oxide lightning arrester in electrical substation has the option of 10 20 and 35 kv voltage level to select. Meanwhile, the technical specification such as Continuous Operating Voltage discharge current capacity and residual pressure level, could be adjusted as the electricity demand. The production team will control the quality of each metal oxide lightning arrester in electrical substation throughout the entire process.

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Product Description

XiFA is a professional China Metal Oxide Lightning Arrester in Electrical Substation manufacturer and supplier. In a electrical substation, a set of metal oxide lightning arresters will release electricity energy to the ground as the format of impulse current to protect the electrical substation from the lighting overvoltage and operation overvoltage. The main advantages of a metal oxide lightning arresters could be show as the below:

1. High Protection Efficiency

■ Provides excellent protection for transformers, switchgear, and other substation equipment against lightning and switching surges.

■ Responds within microseconds to clamp dangerous overvoltages.

2. Advanced Zinc Oxide Technology

■ Utilizes high quality ZnO varistors with superior non linear characteristics.

■ Ensures lower residual voltage and better energy absorption compared to traditional silicon carbide metal oxide lightning arresters.

3. Reliable Performance and Long Service Life

■ Designed for continuous operation under harsh electrical and environmental conditions.

■ Resistant to aging, thermal stress, and repeated surge impacts.

4. Low Maintenance Requirement

■ Compact, lightweight, and easy to install.

■ Minimal periodic inspection needed, reducing operational costs.

Metal Oxide Lightning Arrester In Electrical Substation

Product Parameter:

Mode	Us	Ur	Uc	U1mA	Vs	VL	Vsw	LD (2ms)	HC (4/10μs)
	kV(r.m.s)			≮kV	≯kV			A	kA
YH5WZ-5/15	3	5	4.0	7.5	15.5	13.5	12.8	150	65
YH5WZ-10/30	6	10	8.0	14.4	31.0	30	27	150	65
YH5WZ-17/50	10	17	13.6	24	51.5	50	45	150	65
YH5WZ-26/66	20	26	20.8	37	76	66	56	150	100
YH5WZ-51/134	35	51	40.8	73	154	134	114	250	100
YH5WZ-54/134	35	54	43.2	77	154	134	114	250	100

Us	System Rated Voltage
Ur	Rated Voltage of Arrester
Uc	Continuous Operating Voltage
U1mA	DC reference voltage at 1 mA
Vs	Steep Current Impulse Residual Voltage;
VL	Lightning Impulse Residual Voltage
Vsw	Switching Impulse Residual Voltage
LD	Long Duration Current Impulse Withstand
HC	High Current Impulse Withstand

Metal Oxide Lightning Arrester In Electrical Substation

Product FAQ:

Q: What is a metal oxide lightning arrester and how does it work?

A: A metal oxide lighting arrester is a protective device that limits overvoltages in substations. It uses zinc oxide varistors that remain insulating under normal voltage, but become conductive during a surge, diverting excessive energy safely to ground.

Q: Why is a metal oxide arrester used instead of older silicon carbide types?

A: Metal oxide arresters offer lower residual voltage, faster response, and higher energy absorption capacity. This ensures better protection for transformers, circuit breakers, and busbars in substations.

Q: What equipment does a metal oxide lightning arrester protect in a substation?

A: It mainly protects transformers, switchgear, cables, and other high voltage equipment from lightning and switching surges that could cause insulation breakdown or equipment failure.

Q: What are the key performance parameters of a metal oxide lightning arrester?

A: Rated Voltage (Ur)

Continuous Operating Voltage (Uc / MCOV)

Nominal Discharge Current (In usually 10 kA or 20 kA)

Lightning Impulse Residual Voltage (Ures)

Energy absorption capability

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