Wiring
33
wire, can not only flow into inverter system but also other devices. It also can make
leakage current circuit breaker, relay or other devices malfunction. The value of
line-to-line leakage current, which means the leakage current passing through
distributed capacitors of input output wire, depends on the carrier frequency of inverter,
the length and section areas of motor cables. The higher carrier frequency of inverter,
the longer of the motor cable and/or the bigger cable section area, the larger leakage
current will occur.
Countermeasure:
Decreasing the carrier frequency can effectively decrease the leakage current. In the
case of motor cable is relatively long (longer than 50m), it is necessary to install AC
reactor or sinusoidal wave filter at the output side, and when it is even longer, it is
necessary to install one reactor at every certain distance.
4.7.3.5 EMC Filter
EMC filter has a great effect of electromagnetic decoupling, so it is preferred for
customer to install it.
For inverter, noise filter has following categories:
z
Noise filter installed at the input side of inverter;
z
Install noise isolation for other equipment by means of isolation transformer or
power filter.
4.7.4 If user install inverter and EMI filter according to the installation guideline, we
believe inverter system comply with following compliance.
z
EN61000-6-4
z
EN61000-6-3
z
EN61800-3
Содержание CHV Series
Страница 2: ......
Страница 12: ...Introduction 4 1 4 Parts Description Figure 1 2 Parts of inverter 15kw and below...
Страница 13: ...Introduction 5 Figure 1 3 Parts of inverters 18 5KW and above...
Страница 23: ...Disassemble and Installation 15 Figure 3 7 Disassembly of metal plate cover Figure 3 8 Open inverter cabinet...
Страница 25: ...Wiring 17 4 1 Connections of Peripheral Devices Figure 4 1 Connections of peripheral devices...
