Spec Sheet

G4-246 (20RESC) 1/19d

Alternator Specifications

Specifications Alternator

Manufacturer Kohler

Type 2-Pole, Rotating Field

Leads, quantity

2F7 4

2G7 12

Voltage regulator Digital

Insulation: NEMA MG1-1.66

Material Class H

Temperature rise (60 Hz)

130_C Standby

Temperature rise (50 Hz)

150_C Standby

Bearing: quantity, type 1, Sealed

Coupling Direct

Amortisseur windings Full

Voltage regulation, no-load to full-load

RMS

±1.0%

One-step load acceptance 100% of Rating

Peak motor starting kVA: (35% dip for voltages below)

240 V, 1 ph 2F7 (4 lead) 41 (60 Hz)

230 V, 1 ph 2F7 (4 lead) 28 (50 Hz)

240 or 480 V, 3 ph 2G7 (12 lead) 69 (60 Hz)

208 or 416 V, 3 ph 2G7 (12 lead) 55 (50 Hz)

Alternator Features

D Compliance with NEMA, IEEE, and ANSI standards for

temperature rise.

D Self-ventilated and dripproof construction.

D Windings are vacuum-impregnated with epoxy varnish for

dependability and long life.

D Superior voltage waveform and minimum harmonic

distortion from skewed alternator construction.

D Digital voltage regulator with 1.0% no-load to full-load

RMS regulation.

D Rotating-field alternator with static exciter for excellent

load response.

D Total harmonic distortion (THD) from no load to full load with

a linear load is less than 5%.