Metal Clad Low Voltage Switchgear
GCK type low voltage switchgear is suitable for three-phase AC 50/60HZ, maximum voltage 660V, 3150A system rated current and three-phase four-wire and three-phase five-wire, widely used in power plants, substations, industrial and mining enterprises, hotels, airports, docks And the construction,...
Description
GCK type low voltage switchgear is suitable for three-phase AC 50/60HZ, maximum voltage 660V, 3150A system rated current and three-phase four-wire and three-phase five-wire, widely used in power plants, substations, industrial and mining enterprises, hotels, airports, docks And the construction, transmission and distribution of broadcasting and communication centers, as well as power conversion, power distribution and power consumption in PC and motor control center MCC
The 440V low voltage MCC motor control panel is used for motor control to start or stop the motor.
Take 400A MCCB as the main circuit breaker, three-phase No. 3 ampere meter, which is used to indicate the total current of all drawer modules.
1 x 95 KW/250A drawer type modular control, start the motor through star delta. 3 x 15KW/50A and 3 x 7.5KW/32A modular direct start motors.
In each unit inside, MCCB is installed as the main switch, thermal overload relay and AC contactor
Two medium-sized relays are additionally equipped inside, one relay with a coil 24VDC for receiving signals from the PLC, and the other relay for opening/closing the scene
Use scope and purpose
Switchboards are used in power distribution systems in power plants, high-rise buildings, chemical industries, and petroleum, metallurgical and textile industries. It is used as a complete low-voltage power distribution equipment in large power plants that need to be connected to computers and highly automated petroleum and chemical industries for power distribution in power generation and distribution systems with a three-phase AC frequency of 50 (60) . ) Hz, 380V (400) (600) and rated current, maximum and below (including 4000A), as well as centralized motor control and reactive power compensation.
Conditions of Use of Electrical panels
Ambient temperature: -15'C~+40'C
Altitude: <= 1000m
Air humidity: daily average of air humidity <= 95%, daily average of partial vapor pressure <= 2.2kPa; monthly average air humidity <= 90%, monthly average partial vapor pressure <= 1.8kPa
Earthquake intensity <= 8 degrees
No corrosive or flammable gas
Special circumstances depend on the user
| Item | Unit | Parameters | |
| Rated voltage | KV | 3, 7.2, 12 | |
| Rated current | A | 630,1250,1600,2500,3150,4000* | |
| Rated short circuit breaking current | KA | 25, 31.5, 40 | |
| Rated short circuit switching current | 63, 80, 100 | ||
| Rated short-yime withstand current(4s) | 25, 31.5, 40 | ||
| Rated peak withstand current | 63, 80, 100 | ||
| Rated frequency | Hz | 50 | |
| Rated insulation level | 1 min power frequency withstand voltage | KV | 42 |
| Lighting impulse withstand voltage | 75 | ||
| control circuit voltages | AC | V | 110, 220, 380 |
| DC | V | 110, 220 | |
| Protection degree | Housing IP4X , cubicle and circuit breaker IP2X when door is open | ||
Order information
Schematic diagram of main circuit or electrical schematic diagram
Arrangement and layout
Model, specification and quantity of main components.
Incoming and outgoing wire method and cable specification, etc
If bus connection is required between the devices, bus connection and height from the ground shall be provided.
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