Miniature Current Transformers

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 [770 Series Tape Wound]

[770 Series Moulded Case]

PLEASE SEE TECHNICAL INFORMATION - PDF FOR COMPLETE INFORMATION

770 Series Tape Wound

Features

Slips over mains cables
Plain ring cable tie or foot mounted
Size permits p.c.b. mounting
Secondary output 10mA
Primary rating 1A-100A
Multi-range version 10A- 100A

Applications

Galvanic isolation
Converts high currents to low level electronic signals
Operates electronic relays, moving coil meters, recorders and digital indicators

Performance

 

Models 771, 772

Model 773 Multi-range

Primary ratings:

1A-100A

10A-100A

Secondary Outputs:

10mA standard other outputs are available on request

10mA - 100mA

VA output:

0.03VA (3V at 10mA)

0.015VA - 0.15VA

System frequencies:

50/60Hz, 400Hz

Service temperature:

0°C - 80°C

Insulation class BS2757:

Class Y (max 90°C)

Operating Voltage:

720V A.C. max

Test Voltage:

2kV D.C.

Accuracy class at standard VA  Load:

80-120% Rated Primary Current:1.0 maximum

20-80% Rated Primary Current:150mm

Flexible Lead Length: 1.5 maximum

Alternative specifications to meet customers’ special requirements can usually be accommodated.
Dimensions

770 Series Moulded Case

Features

Slips over mains cables
Foot mounted
Tough flame retardant moulded case (UL94V0)

Applications

Galvanic isolation
Converts high currents to low level electronic signals
Operates electronic relays, moving coil meters, recorders and digital indicators

Performance

 

Model 772-943

Model 773-943 Multi-range

Model 775-943

Primary ratings:

 40A-100A

 

 

Secondary Outputs:

10mA standard other outputs are
available on request

10mA - 100mA

 

VA output:

 0.03VA (3V at 10mA)

0.015VA - 0.15VA

 

Primary current range:

 

10A-100A

 

Accuracy Class:

 

 

IEC 60044-1:1999

Test Voltage:

 

 

3kV for 1 minute

Secondary:

 

 

1 or 5A

System frequencies:

50/60Hz (400Hz on request)

Service temperature:

-20°C - 85°C

Insulation class BS2757, IEC85:

Class E (max 120°C)

Operating Voltage:

720V A.C. max

Test Voltage:

 2kV D.C.

Accuracy class at standard VA Load:

80-120% Rated Primary Current 1.0 maximum
20-80% Rated Primary Current 1.5 maximum

Alternative specifications to meet customers’ special requirements can usually be accommodated.
Dimensions

                                                                                                                         

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