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Before installation, the environment in the control room should have the condition, all interior decoration construction is finished, indoor clean and safe.
The distribution cabinet is fixed
(1) the power distribution cabinet to the scene, the organization, the postal inspection for deformation, paint off phenomenon, instrument parts whether complete, the presence of defects such as spare parts, manuals, and make a record out.
In accordance with the layout of the construction drawings, the cabinets are placed in the form of the basic section. The ark of ark of ark of ark of ark of ark of a column of ark of a column of ark of the ark of the ark of the ark of the ark that is in the ark of the ark of the ark of the ark of the ark of the ark of the ark of the ark that is in the ark next, the place that is above the ark of the ark is high, the position that is high above the ark is put up small line, The adjustment should be made with 0.5 mm gasket, with no more than three pieces.
After the position is found, the size of the fixed screw of the cabinet is fixed, and the cabinet and the cabinet, the cabinet and the side damper are all connected with galvanized screws. High, low-voltage switchgear and reserved Angle steel welding, chooses some syrup on cable interlayer part with a plate full shop, before the ark, cabinet after all use 1200 mm x 10 mm thick (wide x) insulation spread.
(4) switchgear its adjacent two tank top levelness deviation is not more than 2 mm, entire cabinet top horizontal deviation is not more than 5 mm, the adjacent two ark of edge roughness is not greater than 1 mm, all counter roughness is not more than 5 mm, joint between tank is not more than 2 mm.
After the positioning of the device, the internal fasteners are tightened and checked again, especially the conductor connecting ends. The inside of the cabinet is finished, use the vacuum cleaner to remove the clutter in the cabinet, keep the equipment inside and outside clean, and accurately identify the device bit number and the circuit number.
After the distribution cabinet is installed, the bridge shelf on the cabinet is installed. The distribution cabinet shall be reserved according to size by the supplier. The cable is closed after the installation is completed. The bridge frame and the ground mother in the cabinet are reliable ground with a special ground wire. The bridge is connected to the distribution box (cabinet) to protect the wire and cable, the bridge and the distribution cabinet.
Secondary circuit connection
The distribution cabinet shall complete the connection of the secondary circuit and the relevant test in the cabinet before leaving the factory. Distribution equipment to the scene, to party a under the supervision of site engineers and supervision organization acceptance in time, the related technical documents to complete, the power distribution ark packaging and sealing good, each element is complete, reliable connection. Power distribution cabinet installed after fixation to chase a secondary wiring circuits of power distribution cabinet insulation test, test use 500 v class insulation test instrument, test results is greater than 1 m Ω asked.
All secondary loop line or cable adopt more soft copper wire, terminal USES the specification suitable terminals after hot tin use special pressure clamp pressure, neutral flux should be adopted when the hot tin.
Commissioning test
The transfer trial of the distribution cabinet is discussed in detail.
Other attention requirements
The drawer installation of the drawer will meet the following requirements:
A, the drawer push-pull flexibility, no card resistance, collision phenomenon;
B, the touch head is in line with the center line of the still contact, touching the head tightly;
C, the mechanical interlocking of the drawer, or the electrical interlocking device is correct and reliable, so that the contact head can be separated after breaking the circuit breaker.
The ground contact between the drawer and the cabinet is tightly connected. When the drawer pushes in, the ground contact in the drawer touches the head first, while pulling out the reverse.
Before the power distribution cabinet is checked for secondary circuit, check the design drawing carefully, and the damage element in the cabinet should be disassembled in advance.
The installation of the power distribution cabinet should be complete without damage and complete in the cabinet.
The casing of the transformer room is well grounded.
