API541/API547 Specifications

Specialty Motors per API 541 4th Edition & API 547 Specifications

The highly demanding process industries, from oil production and refining to chemical processing and power generation, have adopted two rigorous standards set forth by the American Petroleum Institute for motor reliability and performance. API 541 - 4th Edition is for the most critical special purpose motors and API 547 is for severe-duty general purpose motors. No one meets these demanding standards with fewer comments or exceptions than Siemens.

Consult Siemens for a complete list of clarifications, exceptions, and bills of material that may apply. Motors bulit to API541 3rd Edition are also available upon request.


As of January 31, 2011, the Norwood, OH facility can offer motors per API 547 specification bearing the Official API Monogram®.

(NOTE: The use of the API Monogram by Siemens is pursuant to License # 547-0004 and is limited to the API product specifications shown.  The use of the API Monogram does not constitute approval or endorsement of these products by the American Petroleum Institute.)

Feature

API 541 4th Edition

API 547

Configuration

Horizontal & Vertical

Horizontal

Enclosures

All

WPII & TEFC

Poles

2 - 16

2 - 8

Power Range

500 - 18,000 HP

(<500 HP upon request)

250 - 3000 HP

Voltage

2300 - 13,200V

2300 - 13,200V

Service Factor

1.0 (1.15 option available)

1.0

Main Terminal Box

Cast iron or fabricated steel

Cast iron or fabricated steel

Auxiliary Boxes

Cast iron (NEMA 4X option available)

Cast iron (NEMA 4X option available)

Shaft

AISI 1045 (AISI 4140 option available)

AISI 1045 (AISI 4140 option available)

Rotor

Induction brazed copper bar

Aluminum die cast <=1000HP otherwise induction brazed copper bar. An Induction brazed copper bar option is available for <=1000HP

Lamination Material

C5 core plate

C5 core plate

Insulation

F-VPI

F-VPI

Hardware

300 series stainless steel

300 series stainless steel

Paint

Two-part epoxy (special paint system option available)

Two-part epoxy (special paint system option available)

Paint Color

Siemens Motor Blue (other color option available)

Siemens Motor Blue (other color option available)

Bearing Type

Sleeve bearing

Sleeve bearing

Warranty

24 months from shipment per AboveNEMA Motor Supplemental Warranty Policy

24 months from shipment per AboveNEMA Motor Supplemental Warranty Policy


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