Qingdao Hengfengyou Electrical Engineering Co., Ltd.
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Customized Low Voltage Switchgear Power Distribution Box Low Voltage Enclosures Switch Cabinet With Low Price In China
1. GCK AC low-voltage distribution cabinet is suitable for power distribution systems of AC 50 Hz, rated working voltage 380V, rated working current upto 3150A by electrical users of power plants, substations and industrial and mining enterprises etc. for conversion, distribution and control of power equipment, lighting equipment and distribution equipment.
GCK AC low-voltage distribution cabinet is new low-voltage distribution cabinet designed according to the requirements of superior of Department of Energy, electrical users and design department based on the principle of security, economy, reasonableness and reliability. The product has the features of high breaking capacity, good dynamic thermal stability, flexible electrical scheme, convenient combination, strong seriation and practicability, new structure and high protection level etc. It can be used as upgraded product of low-voltage switchgear.
GCK AC low-voltage distribution cabinet conforms to IEC439 Low-voltage switchgear and controlgear assemblies and GB 7251 Low-voltage switchgear etc.
2. Range of Use & Purpose
The electrical panels is applied to the distribution system in the power plants, high-rise buildings, chemical industry, and petroleum, metallurgy and textile industries. In the large power plants and highly automated petroleum and chemical industries that require connecting with computers, it is used, as a complete low-voltage distribution equipment, for power distribution in the power generation and distribution system with three-phase AC frequency 50(60)Hz, 380V(400)(600) and rated current up to and including 4000A, and motor centralized-control and reactive power compensation.
3. Electrical panels Service condition
1. Ambient temperature: -15'C~+40'C
2. Altitude: <=1000m
3. Air humidity:
daily average of Air humidity <=95%, daily average of partial vapor pressure <= 2.2kPa;
monthly average of Air humidity <=90%, monthly average of partial vapor pressure <= 1.8kPa
4. Earthquake intensity <= 8 degree
5. No corrosive or flammable gas
Special condition subject to users
| 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 | ||
5. 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.
1. Indoor altitude above sea level: Maximum installation altitude: 2000m
2. Ambient air temperature: -5℃~+40℃ and the average temperature should not
exceed +35℃ in 24h
3. Relative humidity should not exceed 50% at max temperature +40℃. Higher
relative humidity is allowed at lower temperature. Ex. 90% at +20℃. But in view of
the temperature change, it is possible that moderate dews will produce casually.
4. No fire, explosion danger, serious pollution, chemical corrosion and severe vibration
5. Installation gradient not exceed 5°
6. This product is suitable for the following temperature transportation storage: -25℃ ~+55℃ 24h, in a short period of time (no more than 24hours) not more than+70℃.
This series of products with high breaking capacity, good dynamic stability, advanced and reasonable structure, electrical program of practical, series, strong versatility, various schemes of unit combination, a cabinet contained many circuits, save the area , beautiful appearance, high level protection, safe and reliable, convenient maintenance etc.
It accords with the standards IEC439 NEMA ICS2-322 as well as the GB7251-87 “Low voltage complete switch device ” national standards and ZBK36001-89 "low voltage withdraw type complete switch device” professional standards"