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GPN1-40.5kV Removable AC Metal-Clad Enclosed Switchgear

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Rated Voltage36/38/40.5 kV

Rated Current1250~2500 A

Frequency50/60 Hz

Protection DegreeIP3X enclosure, compartment IP2X

GPN1-40.5kV removable AC metal-clad enclosed switchgear cabinet

Product Overview

GPN1-40.5kV removable AC metal-clad enclosed switchgear applies to 40.5kV, 3 phase, AC, and 50/60Hz electrical power networks for receiving and distributing power energy, and also for control, monitor and protection. It is applicable in general power systems and occasions with frequent operation. It conforms to GB 3906, GB/T 11022, DL/T 404-1997, and IEC-298.

Network Application

For receiving and distributing power energy, and for control, monitor and protection in 40.5kV AC power networks.

Service Duty

Applicable in general power systems and occasions with frequent operation.

Key Features

Lead Screw Nut Propulsion Mechanism

A lead screw nut propulsion mechanism is installed in the handcart frame to prevent fault operation and propulsion mechanism damage.

Aluminum-Zinc Plated Steel Enclosure

The enclosure is made of aluminum-zinc plated steel sheet processed by CNC machine and multi-bending, then assembled with bolts.

Composite Insulation Main Circuit

The main circuit adopts composite insulation processing to limit emergency spreading to other parts.

Integrated Operating Structure

The structural design of the completely insulated VCB or SF6 CB and spring operating mechanism adopts an integrated console model.

Five Protection Interlock

Compulsory locking among main switch, handcart and panel door meets five protection.

Mechanical Strength And Appearance

It has strong mechanical strength and can guarantee neatness and good appearance.

Cable Cubicle Space

It provides wide space for connecting several cables in the cable cubicle.

Earthing Switch Function

Earthing switch is used in earthing and loop short circuit.

Handcart Floor Model

The circuit breaker adopts handcart floor model.

Technical Specifications

Rated Voltage	36/38/40.5 kV
Rated Current	1250, 1600, 2000, 2500 A
Rated Frequency	50/60 Hz
Rated Short Circuit Breaking Current	25, 31.5 kA
4s Rated Short Time Withstand Current	25, 31.5 kA
Rated Short Circuit Making Current (Peak)	63, 80 kA
Rated Peak Withstand Current (Peak)	63, 80 kA
Rated Lightning Impulse Withstand Voltage	185 kV (across open contacts: 215 kV)
Main Circuit 1min Power Frequency Withstand Voltage	95 kV (across open contacts: 110 kV)
Auxiliary Circuit 1min Power Frequency Withstand Voltage	2 kV
Outline Dimension (W×D×H)	1400/2800/2600 mm (GPN1 type); 1200/2600/2400 mm (for VD4/HD4 type)
Protection Degree	IP3X (compartment IP2X)
Weight	1000-1850 kg (GPN1 type); 850-1850 kg (for VD4/HD4 type)

Ambient Conditions

Ambient Temperature

-25℃ ~ +45℃, daily average ≤ 35℃

Altitude

1000m (Standard); can up to 4500m for special ordering

Relative Humidity

Daily average ≤ 95%, monthly average ≤ 90%

Earthquake Intensity

≤ 8 degree

Applicable Occasions

Should be free from corrosives, inflammables and vapor.

Structure Features And Outline Dimensions

The switchgear divides into enclosure and handcart. The enclosure is made of aluminum-zinc plated steel sheet after CNC machining and multi-bending, then assembled with bolts. It has strong mechanical strength and can guarantee neatness and good appearance. It consists of relay compartment, handcart compartment and cable compartment. Protection degree is IP2X when the CB handcart is in opening and testing position.

The switchgear is metal-clad removable type. CT and earthing switch are mounted in cable compartment and busbar compartment. The protection degree of enclosure is IP3X, with large space for several cables. The structural design of the completely insulated VCB or SF6 CB and spring operating mechanism adopts an integrated console model with good interchangeability and simple replacement.

GPN1-40.5 Structure Drawing Of Standard Type