Withdrawable Metal-Clad Switchgear 40.5 kV

40.5 kV withdrawable metal-clad switchgear for high-voltage power distribution, control and protection.

Wafr supplies indoor withdrawable metal-clad switchgear for three-phase power systems. The system uses a single-busbar arrangement and can be equipped with withdrawable circuit breakers for power distribution, control, protection and monitoring applications.

Key Specifications

Specification	Configuration
Rated Voltage	40.5 kV
Rated Frequency	50 / 60 Hz
Rated Current	30–2,000 A
Rated Current of Main Bus	630, 1250, 1600, 2000 A
Rated Peak Withstand Current	50 / 63 / 80 kA
Rated Short-Term Withstand Current	20 / 25 / 31.5 kA
Rated Short-Circuit Duration	4 s
Rated Short-Circuit Breaking Current	20 / 25 / 31.5 kA
Rated Short-Circuit Closing Current	50 / 63 / 80 kA
Out-of-Phase Ground Fault Breaking (% of rated breaking current)	86.7%
Rated Short-Circuit Breaking Times	30 (≤25 kA); 20 (31.5 kA)
Rated Mechanical Life – Vacuum Circuit Breaker	10,000 / 6,000 cycles (3,000 for 1,600 A)
Rated Mechanical Life – SF6 Grounding Switch	3,000 cycles
1 min Power Frequency Withstand Voltage (alternately and oppositely)	95 kV
1 min Power Frequency Withstand Voltage (vacuum fracture)	95 kV
1 min Power Frequency Withstand Voltage (isolation fracture)	118 kV
Lightning Impulse Withstand Voltage (alternate with / isolation fracture)	185 / 185 / 215 kV
Auxiliary Control Loop Rated Voltage	110 / 220 V
Auxiliary Control Loop 1 min Withstand Voltage	2,000 V
Rated Operating Sequence (20/25/31.5 kA auto-reclosing)	O-0.3s-CO-180s-CO
Protection Level (enclosure/compartment)	IP4X / IP2X
Pollution Grade	Grade II
Cabinet Size (W × D × H)	1,400 × 2,800 × 2,600 mm

Available Configurations

Bus Arrangement

Single busbar

Circuit Breakers

ZN85-40.5 or LN2-40.5 withdrawable circuit breakers

Protection & Control

Intelligent control and protection device configurations

Automation

Supports power distribution automation and monitoring

Cable Access

Incoming and outgoing cable configurations with dedicated cable space

Product Features

Compact structure: The skeleton is formed by bending thin steel plates and assembled with high-strength bolts and nuts, with high mechanical strength and light weight. By using composite insulation and optimizing electrode shape, the cabinet structure is compact and the footprint is reduced.
Good suitability: The product is designed according to the second categories, which meets harsh conditions (all working conditions) and is suitable for Class II pollution areas. The incoming and outgoing cables are positioned up to 870mm for easy wiring. The scheme is complete and convenient, and it can meet the requirements of various power distribution systems.
Stable performance: There are reliable mechanical "five prevention" interlocks between the circuit breaker, grounding switch and door, and the operation is completely flexible; the circuit breaker has stable and reliable breaking performance, long electrical and mechanical life, easy installation and maintenance, and long maintenance cycle.
Safe and stable: Each functional component is placed in a separate compartment and equipped with an independent pressure relief channel to ensure the safety of personnel and equipment, and the cabinet adopts flame-retardant bus bushing to prevent fire and prevent the expansion of hazard.
Intelligentizing: The intelligent control and protection device can facilitate the realization of power distribution automation. When used in conjunction with the intelligent operation and maintenance background, it has the advantages of preventing and avoiding accidents, strengthening the internal energy assessment of enterprises, reducing equipment maintenance and overhaul time, and realizing data resource sharing.
High protection level: The surface of the cabinet body is powder coated, anti-corrosion, anti-oxidation, and beautiful appearance, IP4X enclosure rating.

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Electrical

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Withdrawable Metal-Clad Switchgear 40.5 kV

Key Specifications

Available Configurations

Key Features

Talk to Our Team