
Chapter 5 Trouble shooting and maintenance
5-14
5.5 Maintenance and inspection
Inverter doesn’t need daily inspection and maintenance.
To ensure long-term reliability, follow the instructions below to perform regular inspection. Turn
the power off and wait for the keypad LED display to go out before inspection to avoid potential
shock hazard possibly caused by charges resides in high-capacity capacitors.
(1) Clean up the accumulation of muck inside the inverter.
(2) Check if there are any loose terminal screws and securing screws. Tighten all loose screws.
(3) Insulation
tests
(a) Disconnect all leads connecting 7300EV with external circuit when performing insulation
tests against external circuit.
(b) Internal insulation test should be performed against the main circuit of the 7300EV inverter
only. Use a high resistance DC 500V meter with insulating resistance higher than 5M
ȍ
.
Caution! Do not perform this test against the control circuit.
耐压绝缘测试的接线图
L1 (L) T1 (U)
L2
7300EV
T2 (V)
L3 (N) T3 (W)
Power source
Motor
Ground terminal
DC-500V high resistance meter
Содержание 7300EV
Страница 14: ...Chapter 3 Environment description and installation 3 4 z EV 1P2 1P5 101 2P2 2P5 201 N4S install TM1 TM2 ...
Страница 15: ...Chapter 3 Environment description and installation 3 5 z EV 1P2 1P5 101 2P2 2P5 201 N4 install TM1 TM2 ...
Страница 86: ...Chapter 6 Peripherals 6 4 z JNFS21015 22 07 FOR EV 202 203 H1 z JNFS21016 15 07 FOR EV 202 203 H3 ...
Страница 87: ...Chapter 6 Peripherals 6 5 z JNFS20858 7 07 FOR EV 401 403 H3 ...