User manual for single-phase meter
54
To ensure the installation stability, the diameter of hanger screw must be longer than
11mm, and the diameter of bottom fixed screws must be wider than 7mm.
5. Cut the cable to the required length and use the wire stripper to uncover the cable. The
recommended bare metal length after stripping is at least 20mm for this series of products.
We insist on the recommended length of the stripped wire to make sure that the bare
metal part is long enough and can be fixed by two connection screws at the same time.
However the bare part should not exceed the terminal box wiring holes, ensure the
safety and insulation effect.
6. When using a small sectional cable, such as 4mm squared, the cable must be placed in the
medium to ensure that the screw is well tightened without deviation.
7. The cables should be connected correctly according to the wiring diagram and the terminals
should be tightened during the installation in order to avoid any damage caused by bad
connection.
The bad fixing of connection screws will lead to the raise of resistance, which can lead
to electrical energy loss and heating of terminals. The heating of component is risky.
Besides, 1mΩ contact resistance in a circuit of 80A will result in 6.4 W power losses.
8. The cables should be connected correctly according to the definition of the auxiliary terminal
(such as pulse output, signal input or RS485 communication).
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