GKG 6/10KV 50-1250A High voltage switchgear for mining Mining power distribution equipment

Short Description:

Product Detail

Product Tags

Product Description

GKG type general high-voltage switchgear for mining is suitable for use in coal mines without gas, coal dust explosion hazards and other similar underground industrial production and electricity departments such as non-coal mines. GKG type general high-voltage switchgear for mining (hereinafter referred to as switchgear ), mainly used in the underground car park of gas and coal dust in the mine, the main air inlet road and the power distribution room of the main air inlet road. As AC 50Hz, voltage 7.2KV or 12KV electrical equipment distribution incoming line, feeder, protection and control of high-voltage motors, transformers. Switchgear can also be used in coal mine ground substations and power supply and distribution systems in metallurgy and chemical industries.
This standard complies with GB/T12173-2008 "General Electrical Equipment for Mining", JB 8739-2015 "Flameproof High Voltage Power Distribution Device for Mining", GB3836.1-2010 "Explosive Environment Part 1: General Requirements for Equipment", GB3836.3-2010 "Explosive Atmospheres Part 3: Equipment Protected by Increased Safety "e"" and other standards are formulated. The technical parameters and requirements of this standard are more specific, detailed and more operable.

Relevant standards cited and implemented:
GB 3636.1-2010 Explosive Atmospheres Part 1: General Requirements for Equipment
GB 3836.3-2010 Explosive Atmospheres Part 3: Equipment Protected by Increased Safety "e"
GB/T 11022-2011 High Voltage Switchgear and Control Common technical requirements for equipment standards
GB 1984-2003 High-voltage AC vacuum circuit breaker
GB 4208-2008 Enclosure protection class (IP code)
GB/T 12173-2008 Mining general electrical equipment
GB/T 156-2007 Standard voltage
GB/T 191 —2008 Graphical signs of packaging, storage and transportation
GB/T 2423.4-2008 Environmental testing of electrical and electronic products Part 2: Test method Test Db: Alternating damp heat (12h+12h cycle)
JB-2015 Mine flameproof high-voltage power distribution device
AQ 1043-2007 Safety signs for mining products
GB3906-2006 3.6kV~40.5kV AC metal-enclosed switchgear and control equipment

Model Description

Technical parameters and structure dimensions

Rated voltage: 10kV, 6kV;
Rated current: 1250A, 1000A, 800A, 630A, 500A, 400A, 315A, 200A, 150A, 100A, 50A;
Protection grade: IP43;
Times of short-circuit breaking and making current: 5 times of "opening - 0.3s - making opening - 180s - making opening", 14 times of opening, 11 times of making opening;
Rated short-circuit breaking current: 31.5kA (effective value);
Rated short-circuit making current: 80kA (peak value);
Rated short-time withstand current: 31.5kA (effective value);
Rated peak withstand current: 80kA (peak value);
Rated short circuit duration: 4s;
Rated short-circuit breaking times: 30 times

Product features and Operating environment

1. The switchgear overcomes the shortcomings of the original switchgear. The novel handcart-type switchgear developed by the company has complete protection functions, high operational reliability, and convenient and simple maintenance. Small size and light weight.
2. The switch cabinet is composed of a cabinet and a handcart. It is divided into a handcart room, a busbar room, a cable room, and a relay room by a partition. The handcart has two positions for experiment and work. The handcart room is separated from the cable room by a movable insulating plate, which is particularly convenient and safe during maintenance. The handcart exchange rate is 100%, reducing maintenance time and improving power supply quality. The handcart slideway is accurate and flexible to ensure that the handcart does not deviate in and out, and a positioning navigation rail is installed to make the secondary plug accurate and reliable contact.
3. The protection function of the switchgear, after years of use in coal mines, the product can meet the protection options of different purposes, equipped with leakage, insulation monitoring, undervoltage, short circuit, overcurrent operation overvoltage, and can also be used with remote control, remote communication, telemetry, etc. The comprehensive automatic protection device can be equipped with a small current grounding protection line selection device.
A series of mining microcomputer protection and measurement and control devices can be selected. The protection system has a communication interface. All information is sent to the upper-level monitoring or adjustment system in real time through the communication network. "Five remote" function.

Main protection functions:
1) Short circuit protection
2) Overload protection
3) Zero sequence overcurrent protection
4) Zero sequence overvoltage protection
5) Overvoltage and undervoltage protection
It also has functions such as fault memory, fault inquiry, and self-checking.
Environmental conditions:
The switchgear should work normally under the following conditions:
a) Altitude: 1000m; b) Ambient
temperature: -20℃～40℃;
c) Relative humidity: 95%;
in a steam environment;