XGN2-12 box-type fixed metal-enclosed switchgear

Product overview

XGN2-12 box-type fixed metal-enclosed switchgear is suitable for 3.6-12KV three-phase AC 50Hz single-bus, single-bus with bypass and double-bus systems as the acceptance and distribution of power, mainly used in power plants, small and medium-sized generators to send power, industrial, mining and industrial enterprises and utilities to distribute power, as well as power systems, power receiving, power transmission of the secondary substation, etc.. The main switch of the switchgear uses ZN28-10, VS1-12 and other series of vacuum circuit breakers.

Model Number and Meaning

XGN2-12□/□□-□

X-box switchgear

G-Fixed

N - indoor installations

2 - Design number

12-rated voltage

□ - Circuit breaker type: S: less oil (or not injected) Z: vacuum F: sulfur hexafluoride

□-actuation form: T: spring-operated D: electromagnetically operated

□ - Rated thermal current A

□ - Rated thermal stability current KA

Product Features

• This type of switchgear cabinet is welded with angle steel, also can be bolted with section steel, external steel plate structure; cabinet has busbar room, circuit breaker room, relay room and cable room four independent compartments, each room is separated by a metal sealing plate; cover and door are steel plate bending, in normal operation and maintenance, according to the normal operating procedures do not need to use tools can be opened to open the door, but can not open the cover.
• The circuit breaker is fixedly installed in the circuit breaker compartment with a pressure relief channel, and the operating mechanism is installed in the front left position outside the cabinet, and the two are connected with a horizontal shaft, tie rods and so on.
• Upper and lower disconnecting switches are GN30-10(D) rotary disconnecting switches with double breaks (GN22-10 non-rotary type is used for the lower disconnecting of the switchgear with the rated current of 3150A or above).
• The interlocking mode between circuit breakers, upper and lower disconnecting switches, front and rear doors adopts JSXGN-type box-type cabinet special mechanical locking mechanism and mechanical program locking, which meets the requirements of "five-proof" of the switchgear cabinet.
• Switchgear for double-sided maintenance, not installed against the wall, in the circuit breaker room and cable room are installed with lighting; front door of the lower part of the cabinet width direction parallel to the grounding copper row, in order to use each cabinet safe and reliable grounding.

Normal conditions of use

The ambient air temperature is not higher than +40°C and not lower than -25°C. The average temperature over a 24-h period does not exceed +35°C; and

The average daily relative humidity of the surrounding environment does not exceed 95% and the average monthly relative humidity does not exceed 90%.

Average daily water vapor pressure not to exceed 2.2 kP and average monthly water vapor pressure not to exceed 1.8 KP.

(a) The altitude of the place of use does not exceed 1,000 m above sea level.

Maximum seismic intensity not exceeding 8 degrees.

The switchgear should be installed in the indoor place without fire, explosion danger, serious filth, chemical corrosion gas and violent vibration. Severe conditions of severe degree of design to meet the degree of light requirements.

In hot and humid areas with large temperature fluctuations, there is a possibility of condensation in the switchgear cabinet, condensation controllers and heaters can be configured according to the needs of the cabinet environment is under automatic control to prevent the occurrence of moisture and condensation of the equipment.

Special conditions of use (e.g., humid and hot zones, plateau areas) are subject to negotiation with our company.

Application Areas

Grids and power stations: power plants, substations, switchyards

Industry: Iron and steel, metallurgy; coal, mining; petroleum, chemical industry

Transportation, logistics: airports, ports; rail transportation

Civil sector: infrastructure, civil power distribution

Basic parameters

Mounting

• Installation of inter-base reference to the lower perimeter, the base over the bad copper protrudes in 1-3mm, the unevenness of the range per meter does not exceed 1.5mm, the full length of the range does not exceed 5mm.
• Place the switching phases on the foundation in order, adjust the installation position, and then use M12 bolts or spot welding to fix them, and tighten the cabinet with MB screws between the cabinets.
• Remove the rear cover plate to install the main busbar and primary power supply, the contact surface of the terminals should be cleaned and coated with neutral petroleum jelly, seal the cable holes after installation.
• Connect the ground bus between cabinets, so that the direction of the arrangement of the switchgear cabinet into one, check whether the work grounding and protective grounding into the mix, grounding circuit is connected, the work grounding resistance should not be greater than 1000Ω, protective grounding resistance should not be greater than 40Ω.
• Installation of secondary power supply, the cable is introduced from the bottom of the front of the cabinet, along the side wall into the low-voltage room, tap on the terminal block; or from the top of the cabinet on the secondary bus bar introduced into the low-voltage room, installed after blocking the cable hole.
• Clean the cabinet of dust and debris.

Ordering Information

The user is required to provide the following information when ordering:

Main circuit scheme number and primary system diagram, arrangement diagram; 

Secondary circuit wiring schematic diagram, terminal arrangement diagram, such as terminals without arrangement diagram according to the manufacturer's regulations;

Type, specification and quantity of electrical components in the switchgear.

The material and specification of the main busbar and branch busbar are otherwise supplied as specified by the manufacturer.

Switchgear use special environmental conditions, should be proposed at the time of ordering.

When accessories and spare parts are required, their types and quantities should be indicated.