Veichi JT550 Series Manual page 30

Chapter 3 Electrical Installation
Figure 3.16 Three -Phase 630-710kW Inverter's Terminal Layout of Major Circuit and Size Diagram
Model
JT550-T3-630G
JT550-T3-710G
Note: In the lists above, 2*120 represents 2 cables of 120mm²;
All the recommended solderless terminals above are manufactured by Shenzhen Goldsite (RNB series and
DT Series Solderless Terminals)
Precautions on Wiring
a) Power Input Terminals L1, L2 or R, S, T
No Phase Sequence Requirements.
b) DC Bus Terminals (+), (-)
• Terminals (+) and (-) of DC bus still have remaining charge with hazardous voltages after the inverter is
switched off. After the indicator "CHARGE" goes off, wait at least 10 minutes before touching the inverter.
Otherwise, you might get electric shock.
• Be sure to connect the external braking components to the corresponding terminals(+) and (-). Otherwise it
could cause a fire.
• The cable length of the braking units shall be no longer than 10m. Use twisted-pair cables or pair wires for
parallel connection.
•Do not connect the braking resistors directly to the DC bus. Otherwise, it may damage the inverter and even
cause a fire.
c) Connecting Terminals of Braking Resistor (+), PB
• The connecting terminals of the braking resistor are effective only for the inverters of 37kW or below with a
built-in braking unit.
• The cable length of the braking resistor shall be less than 5 m. Otherwise, it may damage the inverter.
d) Connecting Terminals of External Reactor P1/PR, ( + )
Rated Recommended
Input Input Output
Current Power Cable
A mm²
1120 2*300
1260 2*300
50mm
Recommended
Recommended
Solderless
Terminal
Models
2*DT300-16
2*DT300-16
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JT550 Series Inverter Manual
63mm
M16 Combination Screw
M16组合螺钉
Recommended
Solderless
Ground Cable
Terminal
mm²
Models
300 DT300-16
300 DT300-16