40.5kV Metalclad AC Enclosed Switchgear, Withdrawable Type

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Key attributes

Brand	ROCKWILL
Model NO.	40.5kV Metalclad AC Enclosed Switchgear, Withdrawable Type
Rated voltage	40.5kV
Rated frequency	50/60Hz
Series	KYN

Product descriptions from the supplier

Description

The 40.5kV Metalclad AC Enclosed Switchgear, Withdrawable Type is a high-performance medium-voltage solution engineered for robust, reliable power distribution in large-scale industrial facilities, utility substations, and high-voltage grids. Its robust metalclad enclosure ensures superior protection, while the withdrawable design enables efficient maintenance, making it a cornerstone for stable high-voltage power management.

Application: In the system of 50Hz, 40.5kV, for power distribution, circuit control and protection.

Standards: IEC 62271-200

Product Advantages

High-Voltage Resilience：Designed for 40.5kV systems, it withstands high electrical stress with advanced insulation, ensuring safe operation in demanding high-voltage networks.
Withdrawable Mechanism：Critical components (e.g., circuit breakers) can be easily withdrawn, allowing swift maintenance or replacement without disrupting the entire system, reducing downtime.
Robust Metalclad Protection：All-steel enclosure provides IP-rated defense against dust, moisture, and physical impact, enhancing durability in harsh industrial environments.
Enhanced Safety Interlocks：Multi-layer mechanical and electrical interlocks prevent misoperations (e.g., accidental closing under load), safeguarding personnel and equipment.
Scalable Configuration：Adaptable to various grid setups (incoming, outgoing, transformer connections), supporting flexible integration into complex power distribution architectures.
Low Lifecycle Costs：Durable construction and minimized maintenance needs (thanks to withdrawable parts) reduce long-term operational expenses, ensuring cost efficiency.

Parameters

Item		Unit	Data
Rated voltage		kV	40.5
Rated current	Rated current of main bus bar	A	1250, 1600, 2000, (2500)
	Rated current of matched VCB	A	1250, 1600, 2000, (2500)
	1min power frequency withstand voltage	KV	95
	Lightning withstand voltage	kV	185
	Power frequency withstands voltage of auxiliary circuit and control circuit	V/1min	2000
Rated frequency		Hz	50
Rated short-circuit breaking current		kA	20, 25, 31.5
Rated short-time withstand current/ Rated short-circuit continuous time		kA/4s	20, 25, 31.5
Rated withstands current (peak)		kA	50, 63, 80*
Rated short-circuit making current		kA	50, 63, 80*
Rated voltage of control circuit		V	DC: 110, 220; AC: 110, 220
\multirow{2}{*}{Protection level}	Switchgear shell		IP3X
\multirow{2}{*}{Protection level}	Compartments (door opened)		IP2X

Negotiable

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Model

KYN61-40.5(Z)

Warranty by

Whole life care manager

Whole-life care management services for equipment procurement, use, maintenance, and after-sales, ensuring safe operation of electrical equipment, continuous control, and worry-free electricity consumption.

The equipment supplier has passed platform qualification certification and technical evaluation, ensuring compliance, professionalism, and reliability from the source.

40.5kV Metalclad AC Enclosed Switchgear, Withdrawable Type

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