Baldor-Reliance
IEEE 841 Severe Duty
Rotary-screw compressor duty in dusty/oily plants.
Nameplate
- Phase
- 3-Phase
- HP range
- 1 – 500 HP
- Voltage codes
- 230/460 V · 460 V · 575 V
- NEMA frames
- 143T – 449T
- Enclosure
- TEFC (cast iron)
- Poles / RPM
- 2, 4, 6
- Efficiency
- NEMA Premium
- Insulation class
- F
- Service factor
- 1.15
- Bearings
- Sealed regreasable; INPRO/Seal bearing isolators
- Family
- 841XL
Lead connection diagrams
9-lead Wye (High voltage · 460 V)
L1 ─┬─ T1 ── T7
L2 ─┬─ T2 ── T8
L3 ─┬─ T3 ── T9
T4 ─┐
T5 ─┼── tied together (neutral point)
T6 ─┘Tie T4-T5-T6 together and insulate. Feed line to T1/T2/T3; jumper T7-T1, T8-T2, T9-T3.
9-lead Delta (Low voltage · 230 V)
L1 ─┬─ T1 ── T6 ── T7 L2 ─┬─ T2 ── T4 ── T8 L3 ─┬─ T3 ── T5 ── T9
Parallel pairs: T1-T6-T7, T2-T4-T8, T3-T5-T9. No neutral tie.
Schematics & manuals
Links point to the manufacturer's own PDF hosting. If a link 404s, search the model number on the manufacturer's Download Center — filenames change with revision.
Field notes
- 5-year warranty. Vibration limit 0.08 in/s peak — pre-tested at the factory.
- Regreasing interval per Baldor lube instruction MN408.
The connection charts above are the NEMA MG-1 industry-standard patterns most brands follow. Always confirm the exact chart printed inside your motor's peckerhead lid before landing leads — voltage-code and lead-tag conventions vary between OEMs and production years.
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