Cautions For Peripheral Devices; Protection For Branch Circuit - Toshiba TOSVERT VF-AS3 Instruction Manual

(4)

Protection for branch circuit

If the inverter is installed in the U.S., provide protection for the branch circuit according to
National Electrical Code and local standards.
If it is installed Canada, provide protection according to Canadian Electrical Code and local
standards.
9. 2. 3
Install a UL conformed fuse on the input side of the inverter.
For this inverter, a UL test has been conducted under the interrupting current (current that runs when
interruption of power occurs) conditions in the table below. Note that the interrupting current varies
depending on the applicable motor output.
Max input
voltage (V)
3-phase
240 V
9
3-phase
480 V
For the classes, current values, and the wire sizes of fuses, refer to the following table.
9. Measures to satisfy standards

Cautions for peripheral devices

Applicable
motor (kW)
Suitable For Use On A Circuit Capable Of Delivering Not More Than 5,000A
0.4 - 30 rms Symmetrical Amperes, 240 Volts Maximum When Protected by J Class
Fuses
Suitable For Use On A Circuit Capable Of Delivering Not More Than
37 10,000A rms Symmetrical Amperes, 240 Volts Maximum When Protected
by J Class Fuses
Suitable For Use On A Circuit Capable Of Delivering Not More Than
45 - 55 10,000A rms Symmetrical Amperes, 240 Volts Maximum When Protected
by AR Class Fuses
Suitable For Use On A Circuit Capable Of Delivering Not More Than 5,000A
0.4 - 30 rms Symmetrical Amperes, 480 Volts Maximum When Protected by J Class
Fuses
Suitable For Use On A Circuit Capable Of Delivering Not More Than
37 - 75 10,000A rms Symmetrical Amperes, 480 Volts Maximum When Protected
by J Class Fuses
Suitable For Use On A Circuit Capable Of Delivering Not More Than
90 - 110 10,000A rms Symmetrical Amperes, 480 Volts Maximum When Protected
by AR Class Fuses
Suitable For Use On A Circuit Capable Of Delivering Not More Than
132 18,000A rms Symmetrical Amperes, 480 Volts Maximum When Protected
by AR Class Fuses
Suitable For Use On A Circuit Capable Of Delivering Not More Than
160 - 220 18,000A rms Symmetrical Amperes, 480 Volts Maximum When Protected
by J Class Fuses
Suitable For Use On A Circuit Capable Of Delivering Not More Than
280 30,000A rms Symmetrical Amperes, 480 Volts Maximum When Protected
by T Class Fuses
Power supply short-circuit current (A)
9-8
E6582062