GCK-1600A Low-Voltage Switchgear Assembly, 1600A Rated Current, IP42

Description

The GCK-1600A is a low-voltage switchgear assembly with a rated current of 1600A, a rated operating voltage of 400V, and a rated frequency of 50Hz. It is a floor-type, indoor, fixed installation assembly built on a bolted C-shaped steel frame, with a main bus running above the cabinet through the full assembly length. The main switch is a universal circuit breaker, and the assembly is configured with feeder and control functional units.

Product Overview

The assembly is composed of a cabinet, universal circuit breaker, moulded-case circuit breakers, AC contactors, thermal overload relays, copper busbars, an N busbar, a PE busbar, PVC insulated conductors, busbar clamps, busbar frames, insulators, insulated support strips, main circuit connectors, and 1/2 unit adapters. The cabinet frame is assembled with C-shaped steel bolts, and internal dimensions, component dimensions, and compartment dimensions follow a module of E=25mm.

The main bus is located above the cabinet and runs through the entire low-voltage switchgear assembly. The cabinet top is fitted with a top cover, and the universal circuit breaker is fitted with a face mask. The cabinet surface is electrosprayed with light camel epoxy powder. The main switch incoming line mode is the lower inlet line. The control cabinet distribution bus surface is tinned; the other copper busbars, the N busbar, and the PE busbar are bare copper with no surface treatment. Part of the lap surface is pressed to increase the contact area, and some parts have heat-shrink sleeve.

Key Features

• Rated current of the complete equipment: 1600A
• Rated operating voltage: 400V; rated frequency: 50Hz
• Rated insulation voltage: 690V; auxiliary circuit insulation voltage: 400V
• Rated impulse withstand voltage: main circuit 8kV, auxiliary circuit 4kV
• Main bus rated short-time withstand current 30kA (effective value) and rated peak withstand current 63kA
• Enclosure protection grade IP42
• Mechanical impact rating IK10 for the cabinet and door panels, IK05 for functional unit panels, instruments, and indicator light covers
• Internal isolation form of functional units: form 1
• Floor-type fixed installation, indoor use
• Cabinet surface electrosprayed with epoxy powder for corrosion prevention

Technical Specifications

Parameter	Value
Rated voltage Un	400V
Rated operating voltage Un	400V
Rated frequency fn	50Hz
Rated insulation voltage Ui	690V
Auxiliary circuit insulation voltage Ui	400V
Rated impulse withstand voltage Uimp	Main circuit: 8kV; auxiliary circuit: 4kV
Overvoltage category	III
Electric shock protection type	Class I complete equipment
Pollution level of the micro-environment	3
Electrical clearance	≥10.0mm
Creepage distance	≥12.5mm
Rated current of complete equipment In	1600A
Temperature rise verification method	Method a
Main bus rated current, rated short-time withstand current, rated peak withstand current	1600A, 30kA (effective value) / 63kA (peak value)
Feeder cabinet distribution busbar group rated current, rated short-time withstand current, rated peak withstand current	800A, 30kA (effective value) / 63kA (peak value)
Control cabinet distribution bus rated current, rated short-time withstand current, rated peak withstand current	800A, 30kA (effective value) / 63kA (peak value)
Main switch type	Universal circuit breaker
Main switch model	PYW1-2000/3P
Main switch rated current Inm	2000A
Main switch In, Icu, Ics, Icw	In: 2000A; Icu: 85kA; Ics: 85kA; Icw: 85kA/1s
Number of circuits	Feeder cabinet: 2 circuits; control cabinet: 8 loops
Feeder cabinet outgoing line rated currents	P1 and P2: 400A and 400A; Icc: 30kA
Control cabinet outgoing line rated currents	C1–C8: 40A, 40A, 40A, 40A, 40A, 160A, 160A, 280A; Icc: 30kA
Feeder cabinet outgoing line protection devices	P1, P2: In 500A, Icu 100kA, Ics 75kA
Control cabinet outgoing line protection devices	C1–C5: In 63A, Icu 85kA, Ics 70kA; C6, C7: In 250A, Icu 85kA, Ics 70kA; C8: In 400A, Icu 100kA, Ics 75kA
Rated dispersion factor (RDF)	Feeder cabinet: 1.0; control cabinet: 1.0
Enclosure protection grade	IP42
Mechanical impact rating	IK10 (cabinet, door panels); IK05 (functional unit panels, instruments, indicator light covers)
Internal isolation form of functional units	Form 1
Minimum isolation distance for withdrawable components	20.9mm
EMC environment	Environment A
Rated power consumption of fuse	/
Insulating materials and heat resistance grade	DMC material, epoxy resin material, ABS material, polyethylene, rubber; heat resistance grade E
Main busbar specification	TMY 10mm×100mm
N busbar specification	TMY 10mm×50mm
PE busbar specification	TMY 5mm×50mm
Feeder cabinet distribution bus	10mm×60mm
Control cabinet distribution busbar	6mm×80mm
PVC insulated conductor	BVR 16mm², 2.5mm²
Cabinet dimensions (height × width × depth)	2200mm × 600mm × 800mm
Front door panel thickness	2.0mm
Rear door thickness	1.5mm
Cabinet shelf thickness	2.0mm
Cabinet material	Steel
Function unit panel material	ABS
Maximum mass of the prototype	872kg / 1 set (3 tower)
Main ground screw	M12 iron galvanized
Maximum insulation support distance, main busbar	600mm (horizontal)
Maximum insulation support distance, feeder cabinet distribution busbar	530mm (vertical)
Maximum insulation support distance, control cabinet distribution busbar	700mm (vertical)
Maximum insulation support distance, neutral busbar	600mm (horizontal)

Applications

The GCK-1600A is intended for indoor, floor-type fixed installation as a low-voltage switchgear and controlgear assembly. The feeder cabinet and control cabinet outgoing line circuits are configured for distribution load and motor load. The assembly is not intended for use in photovoltaic facilities.

Installation and Use

The assembly is installed as a floor-type fixed installation and is intended for indoor use. The main switch incoming line mode is the lower inlet line, and the main switch wiring mode is bottom wiring or top wiring. The inlet and outlet line of the sample cabinet is the back line of the incoming cabinet, the feeding cabinet, and the control cabinet.

The electrical connection mode of the functional units is FFF for the incoming cabinet and feeder cabinet and WWW for the control cabinet. In this notation, the first letter indicates the electrical connection type of the main incoming line circuit, the second letter indicates the electrical connection type of the main outgoing line circuit, and the third letter represents the electrical connection type of the auxiliary circuit; F denotes fixed connection, D denotes separable connection, and W denotes removable connection.

For protection grounding, the cabinet is equipped with a grounding bus TMY 5mm×50mm with a contact site and grounding sign. The door and the cabinet are connected by a BVR 2.5mm² yellow-green two-color line, so that the whole cabinet forms a complete grounding protection circuit. The main ground screw is M12 iron galvanized. Corrosion prevention is provided by electrostatic spraying of epoxy powder on the cabinet surface, and other metal parts have corrosion prevention ability.

The prototype lifting structure consists of a cabinet top lifting ring and bottom assembly channel steel, and the prototype lifting method is 1 set (3 units) overall lifting.

Frequently Asked Questions

What is the rated current of the GCK-1600A assembly?

The rated current of the complete equipment is 1600A, with a rated operating voltage of 400V and a rated frequency of 50Hz.

What are the main bus short-time and peak withstand currents?

The main bus is rated 1600A with a rated short-time withstand current of 30kA (effective value) and a rated peak withstand current of 63kA.

What is the enclosure protection grade?

The enclosure protection grade is IP42. The cabinet and door panels have a mechanical impact rating of IK10, while functional unit panels, instruments, and indicator light covers have IK05.

How is the assembly installed?

It is a floor-type fixed installation intended for indoor use, with the main switch incoming line mode being the lower inlet line.