Techtop Electric Motor
GRC0252DS
25HP
230/460V
3600RPM
256T Frame
3-Phase
Cast Iron
Motor Features
*Removable feet F1, F2, F0 field convertible up to and including 326T frame, F2 convertible 364T and larger
1.25 Service Factor through 326T frame, 1.15 Service Factor for larger frames with 60Hz operation / 1.0 Service Factor with 50Hz operation
36 Month warranty
Cast iron construction with C and D flange kits available
Cast iron fan cover standard for all frame sizes
Cast iron Conduit Box is 90º rotatable
1045 Steel shaft through 405T, 4140 grade for 444T and larger
Regreasable bearings 254T frame and larger
Mobil Polyrex EM polyurea grease
CSA Certified for Class I, Division II, Groups A, B, C and D / Class I, Zone 2, Groups IIC, IIB, IIA
IEEE 45 Marine Duty
Anti-microbial (tropicalization) on stator winding
Surface finish:
2-Part epoxy coating RAL7024 – Graphite Gray
Stainless steel nameplate
Corrosion resistant hardware
Ultra high strength, reusable lifting straps included with motors 254T frame and larger
OPERATING PARAMETERS
Continuous (S1) duty
Ambient temperatures up to 40ºC
Installation up to 1000 MASL (3300 ft.)
CONNECTION
Up to and including 215T Frame:
9-Lead 230V parallel-wye / 460V series-wye connection
3-Lead 575V wye connection
254T Frame and larger:
12-Lead 230V parallel-delta / 460V delta connection
6-Lead 460V or 575V single voltage delta connection
INGRESS PROTECTION
The standard degree of enclosure protection is IP55 (increased IP protection is available). Both drive end and non-drive end are fitted with double lip oil seals, including a rubber shaft slinger on the drive end. Terminal box is double gasketed including nipple seals between conduit box and stator body. DE and NDE end bell fitted with sintered brass one-way drain.
INSULATION AND INVERTER RATING
Class F Insulation (Impregnation resin, magnet wire and insulation materials are Class H)
Designed to Class B temperature rise
Vacuum Impregnated
Inverter Rated 15:1 Constant Torque, 30:1 Variable Torque (1.0 S.F. on VFD Power)
Exceeds NEMA MG 1 Part 31.4.4.2
