15 | Page
V2.1
Wire Sizing
Use Table 13 to find minimum guidelines on properly sizing input conductors according to
local electrical code. The voltage drop from the supply to the converter should be limited to
3% to ensure proper starting and operation of motor loads. Increase the wire gauge to
provide adequate voltage to the load. Ensure the wire gauge is suitable to the terminal
block.
Use the following formula to calculate line voltage drop.
Connecting the Load
Do not connect single-phase loads to the manufactured leg, T3. This places unnecessary
load on the phase converter and may violate electrical code in some areas. Apply overload
and short circuit protection to protect load side conductors, motors, and other attached
loads according to local electrical code. For some motor loads and wiring configurations
load side short circuit protection may not be required. Consult local electrical code for
guidance.
Important Note:
If the connected load requires a wye configured power source with a neutral connection,
the load must be connected to the phase converter using a delta-wye isolation transformer.
Figure 9 – Delta Wye Wiring Diagram
To Next Page
Loading...
Need help?
General