Wiring duct,Cable Gland,Cable Tie,Terminals,RCCN

A: on the electrical part:
1. Small circuit breaker input side and output side wiring upside down.

2. Electrical parts coil voltage and the voltage does not match the drawings, especially small relays and indicators of the voltage error.

3. The positive and negative polarity of the electrical appliance is reversed. There are many components inside and outside the DC device, such as electrolytic capacitors, transistors, integrated circuits, etc. .... These components are very sensitive to positive and negative polarity , Once loaded when the negative pressure is very easy to burn.

Two: on the terminal crimp:

1. Between lines and terminals are not compacted:

Between the line and the terminal to be compacted, mainly to prevent their contact resistance is too large, when the large current through, at the contact, the formation of a larger heating body, thus accelerating the rapid oxidation of the contact surface, and further increase the contact resistance The If this happens, the signal line will cause the information to be intermittent. For the power circuit, it will burn the device and the entire control panel.

Treatment: After the crimping of the terminal with the appropriate effort to pull, in case of high-power power circuit, the need to use the hydraulic clamp to select the current diameter of the mold step down in exchange, until the terminal and wire no gap so far.

2. Wire diameter does not match the terminal specifications:

When the line and the terminal does not match, although we feel the line has been pulled out, but this time between the line and the contact point contact, contact resistance is still very large. Or will cause the above mentioned phenomenon.

Treatment: In case of loose terminals or wire diameter and the terminal does not match, the wire connector must be folded back before pressing, increase the contact area and prevent loosening.

Three: on the terminal into the electrical parts:

1. Insert the wire into the lower part of the miniature circuit breaker terminal and tighten the terminals by tightening the bolts. On the surface of the line has been firmly in the circuit breaker, in fact, because the terminal and the circuit breaker side pile is not fully contact, is still virtual access.

2. Terminal rollover or electrical parts wiring does not match, plus a large force, the terminal end of the terminal with the conductive parts can not be fully exposed.

3. Power circuit wiring, color sets or line code into the past, and thus directly in the electrical parts conductive parts, resulting in wire and electrical parts conductive part of the vacant, not fully exposed.

4. When the terminals are connected to the electrical parts, the same part is connected with more than two wires, and the wires on the surface are connected with the electrical parts. In fact, due to the folder in the middle of the wire contact area decreased, such as causing fever and other phenomena.

Four: on the wiring when the fastening:

1. Bolt nut damage deformation, do not use the vise to fasten or loosen the bolts and nuts to prevent damage caused by the use of live wrench to adjust the opening to prevent damage to the bolt nut deformation, resulting in easy to disassemble.

2. find difficult to disassemble the bolts and nuts, do not recklessly act to prevent deformation caused more difficult to disassemble, should be given appropriate tapping, or screw loosening agent to be removed later.

3. Screwdriver and screw skid, with a screwdriver fastening or loosening the screw, you must force the screwdriver to tighten the screws, and then tighten or loosen, to prevent the screwdriver and screw slippage, resulting in screw damage is not easy to disassemble.

4. Bolt nuts slide, tighten the wiring force to be moderate, to prevent excessive force bolt nuts.

Five: on the wiring:

1. wiring work when the copper fell into the important electrical appliances, this time we need to pay special attention, because when the copper fell into the electrical appliances we can not see also check out the major hidden dangers.

Six: on the electric control device installation:

1. The inside of the box cooling fan into the direction of the wrong air, electric control box because of good sealing, the heat of the box heating element to be completed by the cooling fan, such as a long time not on the box exothermic components, Temperature overheating can affect system stability.

2. Bottom plate device installation with a nut or other can not be fixed in a way to the front, the components should be fixed in the maintenance, easy to disassemble and other principles.