40.5kV Metalclad AC Enclosed Switchgear, Withdrawable Type

Name: 40.5kV Metalclad AC Enclosed Switchgear, Withdrawable Type
Brand: Rockwill Electric GROUP Co., Ltd
SKU: 12728
Price: 1.99 USD
Availability: InStock

Rockwill Electric GROUP Co., Ltd

17yrs 700++ staff 108000m²+m² US$150000000+ China

Rockwill Electric GROUP Co., Ltd

17yrs 700++ staff 108000m²+m² US$150000000+ China

Documentation Resource Library

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Withdrawable Mechanism：Critical components (e.g., circuit breakers) can be easily withdrawn, allowing swift maintenance or replacement without disrupting the entire system, reducing downtime.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

Know your supplier

ROCKWILL

Rockwill Electric GROUP Co., Ltd
17yrs 500-1000 employees 108000m²+m² US$150000000+ China

Rockwill Electric GROUP Co., Ltd

17yrs 500-1000 employees 108000m²+m² US$150000000+ China

Online store

On-time delivery rate

Response time

100.0%

≤4h

Company overview

Workplace: 108000m²m² Total staff: 700+ Highest Annual Export(usD): 150000000

Workplace: 108000m²m²
Total staff: 700+
Highest Annual Export(usD): 150000000

Services

Business Type: Design/Manufacture/Sales

Main Categories: High Voltage Electrical Apparatus/Electric transformer

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.

Negotiable

Pricing calculator

Model

KYN61-40.5(Z)

Warranty by

Whole life care manager

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

Related Knowledges

Intelligent Grounding Transformers for Island Grid Support

1. Project BackgroundDistributed photovoltaic (PV) and energy storage projects are developing rapidly across Vietnam and Southeast Asia, yet face significant challenges:1.1 Grid Instability:Vietnam's power grid experiences frequent fluctuations (particularly in northern industrial zones). In 2023, coal power shortages triggered large-scale blackouts, resulting in daily losses exceeding USD 5 million. Traditional PV systems lack effective neutral grounding management capabilities, making equipmen

Vziman

12/18/2025
Commissioning Test Procedures for Oil-Immersed Power Transformers

Transformer Testing Procedures and Requirements1. Non-Porcelain Bushing Tests1.1 Insulation ResistanceSuspend the bushing vertically using a crane or support frame. Measure the insulation resistance between the terminal and the tap/french using a 2500V megohmmeter. The measured values should not significantly deviate from factory values under similar environmental conditions. For capacitive-type bushings rated 66kV and above with tap bushings, measure the insulation resistance between the "small

Oliver Watts

12/17/2025
Quality Standards for Core Maintenance of Power Transformers

Transformer Core Inspection and Assembly Requirements The iron core should be flat with intact insulation coating, tightly stacked laminations, and no curling or waviness at the edges of silicon steel sheets. All core surfaces must be free of oil, dirt, and impurities. There should be no short circuits or bridging between laminations, and joint gaps must meet specifications. Good insulation must be maintained between the core and upper/lower clamping plates, square iron pieces, pressure plates,

Oliver Watts

12/17/2025
Power Transformers: Short Circuit Risks, Causes, and Improvement Measures

Power Transformers: Short Circuit Risks, Causes, and Improvement MeasuresPower transformers are fundamental components in power systems that provide energy transmission and are crucial induction devices ensuring safe power operation. Their structure consists of primary coils, secondary coils, and an iron core, utilizing the principle of electromagnetic induction to alter AC voltage. Through long-term technological improvements, the reliability and stability of power supply have continuously enha

Felix Spark

12/17/2025
8 Key Measures to Reduce Partial Discharge in Power Transformers

Growing Requirements for Power Transformer Cooling Systems and the Function of CoolersWith the rapid development of power grids and the increase in transmission voltage, power grids and electricity users are demanding increasingly higher insulation reliability for large power transformers. Since partial discharge testing is non-destructive to insulation yet highly sensitive, effectively detecting inherent defects in transformer insulation or safety-threatening defects generated during transporta

Echo

12/17/2025
General Requirements and Functions of Power Transformer Cooling Systems

General Requirements for Power Transformer Cooling Systems All cooling devices shall be installed in accordance with the manufacturer's specifications; The cooling system with forced oil circulation must have two independent power supplies with automatic switching capability. When the working power supply fails, the standby power supply shall be automatically activated while emitting audible and visual signals; For transformers with forced oil circulation, when a faulty cooler is disconnected, a

Echo

12/17/2025