Power Connections - Toshiba H7 Operation Manuals

Power Connections

L1/R, L2/S, and L3/T are the 3-phase input supply terminals for the ASD. The ASD may be operated
DANGER!
from a single-phase supply. When operating using a single-phase supply, use the L1 and L3 terminals.
T1/U, T2/V, and T3/W are the output terminals of the ASD that connect to the motor.
An inductor may be connected across terminals PA and PO to provide additional filtering. When not
used, a jumper is connected across these terminals (see
Connect the input and output power lines of the ASD as shown in
Note:
Figure 3. ASD/Motor connection diagram.
Connect the 3-phase input power to the input terminals of the ASD at L1/R, L2/S, and L3/T. Connect
the output of the ASD to the motor from terminals T1/U, T2/V, and T3/W. The input and output
conductors and terminal lugs used shall be in accordance with the requirements listed in
pg. 205.
If conductors smaller than the recommended sizes are used in parallel for the input or output power,
each branch of the parallel set shall have its own conduit and not share its conduit with other parallel
sets (i.e., place U1, V1, and W1 in one conduit and U2, V2, and W2 in another).
Note:
Install a molded case circuit breaker (MCCB) or fuse between the 3-phase power source and the ASD in
accordance with the 2002 NEC Article 430-102 through 430-111 and the fault current setting of the
ASD.
For 600 volt ASDs, the 15 HP or less drives (P/N VT130H7U6015 – 6160) require a class-J fuse rated
at 600 Volts/30 A.
H7 ASD Operation Manual
In the event that the motor rotates in the wrong direction when powered up, reverse
any two of the three ASD output power leads connected to the motor.
National and local codes should be referenced when running more than three
conductors in the same conduit.
Figure 17 on pg. 18).
Figure 3.
Appendix E on
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