The din rail wiring bar terminal block of the electric cellar shall disconnect the circuit breaker of the capacitor, open the isolation switch of the two circuit breakers, and discharge the capacitor bank through the discharge resistance. After the terminal bank capacitor is discharged by the discharge resistor (discharge transformer or discharge voltage transformer), a manual discharge should still be carried out if part of the residual charge is not discharged for a while.When discharging, first connect the grounding end of the grounding wire, and then discharge the capacitor with the grounding rod several times.Until there is no discharge spark and discharge sound, and then the ground end is fixed, due to the fault of the electric cellar may occur poor lead contact, internal break or fuse blown.So some of the charge may not have been exhausted.Therefore, the maintenance personnel need to wear insulation gloves before contacting the electrical cellar device, first short-circuit the two poles of the faulty capacitor, and then disassemble and replace the neutral line of the electric cellar device group with double star connection.And a number of electric cellar on the string connection, should also be discharged separately.

Capacitors are relatively weak in the reliability of various equipment in the substation, and the insulation of E and other equipment is weak.The internal components are heated more, and the heat dissipation is poor, and the internal failure opportunities are more.The combustible composition of the material inside the power capacitor is large, so it is easy to catch fire during operation.Therefore, the operation of power capacitors should create good low temperature and ventilation conditions as much as possible.The advantage of terminal block is to facilitate the connection of the wire and applied, it is actually a piece of metal sealed in the insulating plastic inside, both ends have holes can be inserted into the wire, there are screws for fastening or loosening, such as two wires, sometimes need to connect, sometimes need to disconnect, then you can use the terminal to connect them, and can be disconnected at any time,Instead of having to weld them together or twine them together, it's quick and easy.And suitable for a large number of wire interconnection, in the power industry has a special terminal block, terminal box, above is full of screw terminal, single-layer, double-layer, current, voltage, ordinary, broken and so on.A certain crimp area is to ensure reliable contact and to ensure that sufficient current can be passed.

In power electronics wiring, when the device in the screen is connected with the device outside the screen, some special terminals are used, and these terminals are combined to be called terminal blocks.The function of the terminal block is to connect the lines of the devices in the screen and the external devices to play the role of signal (current and voltage) transmission.With the terminal block, the wiring is beautiful, easy to maintain, and the connection between the long-distance lines is mainly reliable, convenient construction and maintenance.