Crompton Instruments 64, 65, 66 Catalog Page

Models 64, 65, 66

Window
Diameter 1.56",

2.0", 2.5"

64 – 500 50:5 2.5±2% 2.4 – – – – 0.011 2.0 2.0
64 – 750 75:5 4.0 1.2 2.4 – – – 0.020 2.0 2.0
64 – 101 100:5 5.0 1.2 1.2 4.8 4.8 – 0.026 2.0 2.0
64 – 151 150:5 7.5 0.6 0.6 1.2 2.4 4.8 0.043 2.0 2.0
64 – 201 200:5 12.5 0.3 0.3 1.2 1.2 2.4 0.063 2.0 1.5
64 – 251 250:5 20.0 0.3 0.3 0.6 1.2 2.4 0.074 2.0 1.5
64 – 301 300:5 35.0 0.3 0.3 0.3 0.6 1.2 0.086 2.0 1.5
64 – 401 400:5 50.0 0.3 0.3 0.3 0.6 1.2 0.110 1.5 1.33
64 – 501 500:5 50.0 0.3 0.3 0.3 0.3 0.6 0.173 1.5 1.0

ANSI Metering class at 60Hz

Secondary
winding
resistance
(0HMS @ 75˚C

Continuous
thermal
rating factor

@30˚C @55˚C

Catalogue Current V.A. for
Number Ratio ±1% class

B0.1 B0.2 B0.5 B0.9 B1.8

Model 64

Window Diameter 1.56"
Approximate weight: 3.75 lbs

23

Application:

Metering

Frequency:

50 – 400Hz

Insulation Level:

600 Volts, 10kV BIL full wave

• Terminals are brass studs No. 8 – 32
with one flatwasher, lockwasher and
regular nut

• Order mounting bracket kit
separately

Approvals

CSA 223647

UL 257877