Hyundai N300-P Instruction Manual page 20

N300-P INSTRUCTION MANUAL
1.4 Application Method for J61 Connector Pin according to Input
Power Grounding Condition
1.4.1 Usage of J61 Connector Pin and its application
(1) Usage of J61 Connector Pin
For N300 Inverter, a protection circuit is built-in case of lightning while being used, and it can be
also protected when J61 Connector Pin is connected.
Power input
However, the Inverter can be seriously affected according to its grounding condition(grounding
or non-grounding) of input transformer.
As a result, when Inverter products are yielded, J61 Connector Pin is separately provided (open
condition). Users should choose a set of J61 Connector Pin according to the second grounding
condition of input power as the below picture after deep consideration of your field situation.
- J61 Connector Pin Applying Condition according to grounding -
Grounding
condition
Grounding
Non-grounding
(2) Comparison according to J61 Connector Pin Using or Non-using
a) Advantage of using J61 Connector Pin
Electronic products are often damaged by lightning or thunderbolt due to its sensitivity for the
weather changing. For N300 Inverter, a protection circuit is built-in to protect the inverter from
lightning or thunderbolt by using J61 Connector Pin.
Pre-caution
You should confirm the grounding condition of power source.
When using the second inverter(inverter power input), you should confirm if Y wiring is in neutral
ground system and if
non-grounding system, Inverter can be easily damaged by excessive noise from being
expressed through ZNR .
R
S
T
ZNR5
Wiring Diagram of Input
First Second First Second
Or
Y
First Second First Second
Or
Y
wiring is in upper ground system. If you use J61 Connector Pin in
Chapter 1 General Descriptions
U
V
Inverter
W
J61
Applying Condition
of J61 Connector
Pin
Available for J61
Y
Connector Pin
Running open of J61
Connector Pin
Y
(not connected)
Motor
Remarks
See Application
Method of
Connector in
Chapter 1.4.2
Original
Product