I have a Leroy Somer motor on which the nameplate is as confusing as the spec sheet;
Totally enclosed three-phase powersaving
asynchronous motors, LSES series,
according to IEC 60034, 60038, 60072; power
1.1 to 90 kW, frame size 80 to 280 mm.
Single speed: 2 and 4 poles; 230/400 V or
400 V Δ, 50 Hz.
The selection tables for motors in this
catalogue allow for:
• Direct on line starting on the mains supplies
230 V or 400 V operating in:
- delta connection (Δ) at 230 V,
- star connection (Υ) at 400 V.
• Star/delta start (Υ/Δ) on mains supply 400 V
with:
- star connection (Υ) during initial starting,
- delta connection (Δ) on 400 V duty.
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How would the above listed motor data be wired at the motor junction box when connected to a drive with a 480VAC source? Delta or Wye
The nameplate and spec sheet seem to indicate the motor should be in a Wye configuration at high voltage. But it is in conflict with the later star/delta info.
The motor is currently in a OEM provided delta configuration and the drive rarely runs above 50% base speed or 30 Hz so the voltage never at max from the drive.
********************************************************
Totally enclosed three-phase powersaving
asynchronous motors, LSES series,
according to IEC 60034, 60038, 60072; power
1.1 to 90 kW, frame size 80 to 280 mm.
Single speed: 2 and 4 poles; 230/400 V or
400 V Δ, 50 Hz.
The selection tables for motors in this
catalogue allow for:
• Direct on line starting on the mains supplies
230 V or 400 V operating in:
- delta connection (Δ) at 230 V,
- star connection (Υ) at 400 V.
• Star/delta start (Υ/Δ) on mains supply 400 V
with:
- star connection (Υ) during initial starting,
- delta connection (Δ) on 400 V duty.
********************************************************
How would the above listed motor data be wired at the motor junction box when connected to a drive with a 480VAC source? Delta or Wye
The nameplate and spec sheet seem to indicate the motor should be in a Wye configuration at high voltage. But it is in conflict with the later star/delta info.
The motor is currently in a OEM provided delta configuration and the drive rarely runs above 50% base speed or 30 Hz so the voltage never at max from the drive.
********************************************************