AC Metal-Insulated Ring Main Switchgear

Deyan Electric is a professional industrial electrical supplier with integrated R&D, production and service. The AC Metal-Insulated Ring Main Switchgear is a compact, air-insulated unit for reliable 10-12kV secondary power distribution. Designed for ring main systems, it ensures safe load switching, fault isolation, and continuous power supply. Its robust, modular design offers easy maintenance and is ideally suited for urban grids, industrial estates, and commercial complexes requiring dependable and cost-effective network performance.

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Product Description

The AC Metal-Insulated Ring Main Switchgear is a fully insulated, sealed, and maintenance-free solution. This unit integrates all live parts into a single epoxy-molded block, ensuring total immunity to harsh environments. The reliable Ring Main Unit is ideal for diverse applications from urban grids to demanding sites like tunnels and airports. With its compact and safe design, this solid-insulated switchgear guarantees operational reliability and safety.

Product Parameter ( Specification )

Project	Unit	Parameters
routine
Rated voltage	kV	12
Rated frequency	Hz	50
Power Frequency Withstand Voltage	kV/min	42/48
Lightning impulse voltage	kV	75/85
Arc Duration	S	≥0.5
IP Rating for Components (Excluding Metering Cabinets)		IP67
Enclosure Protection Rating		IP4X
Compartment Protection Rating		IP2X
Operating Power Supply Voltage	V	DC24、48、110、220
Operating Power Supply Voltage	V	AC110、220
Busbar System
Rated current	A	630(1250)
Rated Short-Time Withstand Current	kA/s	20/4(25/4)
Rated Peak Withstand Current	kA	50(63)
Rated Peak Withstand Current	kA	50
Load Switch Unit
Rated current	A	630
Rated Short-Circuit Closing Current	KA	50
Rated Short-Time Withstand Current	KA/S	20/4
Load Switch Mechanical Life	Second
Electrical Life of Load Switches	second	E3
Partial Discharge	pc	≤5
Circuit Breaker Unit
Rated current	A	630(1250)
Rated Short-Circuit Breaking Current	KA	20(25)

Project	Unit	Parameters
Rated Short-Circuit Closing Current	kA	50(63)
Rated Short-Time Withstand Current	kA/S	20/4(25/4)
Mechanical Life of Circuit Breakers	second	20000
Service life of circuit breakers	second	E2
Rated Operating Sequence		0-0.3s-CO-180s-CO
Partial Discharge	PC	≤5
Load Switch-Fuse Combination Electrical Unit
Rated Current (Maximum)	A	200
Rated Short-Circuit Breaking Current	kA	31.5
Rated Current (Maximum)	KA	80
Partial Discharge	PC	3150
Disconnect switch
Rated current	A	630/1250
Rated Short-Time Withstand Current	KA	20/25
Rated Short-Time Duration	S	4
Rated Peak Withstand Current	kA	50/63
Mechanical life	Second	3000
Grounding Switch
Rated current	A	630/1250
Rated Short-Time Withstand Current	K	20/25
Rated Short-Time Duration	S	4
Rated Peak Withstand Current	k	50/63
Rated Short-Circuit Closing Current (Peak)	KA	50
Rated Short-Circuit Closing Current Cycles	Second	2
Mechanical life	Second	3000

Product Feature And Application

Application Sites

Solid Insulation for Enhanced Safety & Eco-Friendliness

Compact & Space-Saving Design

Highly Reliable in Adverse Conditions

Maintenance-Free Operation

Flexible & Expandable Configuration

◇ Compact secondary substations

◇ Small industrial and mining enterprises

◇ Wind power plants

◇ Hotels, shopping malls, office buildings, commercial centers, etc.

◇ C- Load switch unit

◇ D-Direct cable connection unit

◇ De- Direct cable connection unit with grounding switch

◇ F- Load switch-fuse combination unit

◇ V- Vacuum circuit breaker unit

AC Metal-Insulated Ring Main Switchgear

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Contact Info

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Address

No.60, Binhai South Second Road, Economic Development Zone, Yueqing City, Zhejiang Province, China
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Tel

+86-15088597733
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Email

sales@deyanele.com

For inquiries about High Voltage Switchgear, Medium Voltage Switchgear, Low Voltage Switchgear or price list, please leave your email to us and we will be in touch within 24 hours.