VD300 Series Inverter User Manual
Mechanical and Electrical Installation
- 29 -
●
The voltage class of VD300 series inverter 3phase power has two class: 220V, 380V, before
connecting power, please make sure the power class on inverter nameplate is the same with the
accessing power. Otherwise do not connect.
●
DC bus P+ P-terminal: take note that when power outrage there is residual voltage on DC bus P+
P- terminal, need to wait for a while until CHARGE LED off. Otherwise it is danger of electric shock.
●
When selecting external braking unit, note the polarity of P= P- cannot be reversely connected,
otherwise it can result in damage or even fire.
Do not directly connect braking resistor to DC bus, it may result damage or fire.
1) Input power L, N or R, S T: the cable connection at input side of the inverter has no phase
sequence requirement.
2) Braking unit cable length should not exceed 10m, twisted pair or double cable parallel wiring
should be used.
3) Braking resistor connecting terminal P+, PB: confirm whether the device has built-in braking unit,
its braking resistor connecting terminal is effect. The braking resistor selection table 2-4
recommending value and the wiring distance should less than 5M. Otherwise it can damage inverter.
4) External DC reactor connecting terminal P1, P+: for external DC reactor to 18.5kW and above
power inverter, get rid of the connector between P1, P+ terminal during installation, reactor is installed
between the 2 terminal.
5) Inverter output side U, V, W: the output side cannot connect capacitor or surge absorber, otherwise
it will affect inverter in self-protection frequently or damage.
6) In case the motor cable is too long, it may generate electrical resonance easily due to the impact of
distributed capacitance, thus damaging the motor insulation or generating higher leakage current to
invoke over current protection of the inverter. When the length of motor cable is longer than 100
meters, it needs to install an AC output reactor.
7) PE Grounding terminal:
This terminal shall be grounded reliably, with resistance of earth cable
of less than 10Ω. Otherwise, it may cause fault or damage the inverter.
Do not share the earth terminal with zero line N terminal, otherwise it will result equipment abnormal
run or damage.
Содержание VD300 Series
Страница 2: ......