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Safety Instructions
vi
Precautions Concerning Compliance with UL and CUL Standards
(Standards to be met: UL508C and CSA C22.2 No. 14-05)
The SJ700 series inverter is an open-type AC inverter with 3-phase input and output, intended for use in
an enclosure. The inverter supplies both voltage and frequency, both of which are adjustable, to an AC
motor. The inverter can automatically maintain a constant volts/Hz ratio to enhance the motor capability
throughout its entire speed range.
1. Only 75C CU or equivalent wires must be used for wiring.
2. Inverter models with the suffix "L" (200 V class models) are suited to circuits that transmit current not
exceeding 100k rms symmetrical amperes and with voltage of no more than 240 V.
3. Inverter models with the suffix "H" (400 V class models) are suited to circuits that transmit current not
exceeding 100k rms symmetrical amperes and with voltage of no more than 480 V.
4. The inverter must be installed in an environment that is rated for at least Pollution Degree 2 or
equivalent.
5. The ambient temperature must not exceed 50°C.
6. The capacitor discharge time is 10 minutes or more. (Caution: Care must be taken to avoid the risk of
electric shock.)
7. Each model of the inverter has a solid-state overload protection circuit or an equivalent feature for the
motor.
8. The table below lists the tightening torque and wire range specifications for the field wiring of inverter
terminals.
Model No. Required torque (N-m) Wire range (AWG)
SJ700-055LFF2 2.5 8
SJ700-075LFF2 2.5 6
SJ700-110LFF2 4.9 4
SJ700-150LFF2 4.9 2
SJ700-185LFF2 4.9 1
SJ700-220LFF2 8.8 1 or 1/0
SJ700-300LFF2 8.8 2/0 or 1/0 (parallel)
SJ700-370LFF2 8.8 4/0 or 1/0 (parallel)
SJ700-450LFF2 8.8 4/0 or 1/0 (parallel)
SJ700-550LFF2 13.7 2/0 parallel
SJ700-055LFF2 2.5 12
SJ700-075LFF2 2.5 10
SJ700-110LFF2 4.9 8
SJ700-150HFF2 4.9 6
SJ700-185HFF2 4.9 6
SJ700-220HFF2 4.9 6 or 4
SJ700-300HFF2 4.9 3
SJ700-370HFF2 8.8 1
SJ700-450HFF2 8.8 1(75degC)
SJ700-550HFF2 8.8 2/0