The Hobut Current Transformer range

Rectangular resin cast CT's are available in any busbar size. Therefore please specify

1. Busbar size required.
2. Busbar window dimensions required.
3. Outside size required.
4. Class, VA, Protection level etc. For example:

METERING CTs :- Specify class accuracy & VA (eg 5VA, class 1)

PROTECTION CTs :- Specify protection level & VA (eg 5P10 5VA)

CLASS X CTs :- Specify relay type, fault current, lead resistance, lead length.

Note: Terminal positions are supplied as shown below. If you require a different position please specify. Busbar clamp supplied as standard please

• Conform to IEC185, BS7626, BSEN 60044-1 and IEC 60044-1

• Rated system voltage 0.72/3kV.

• Ambient temperature range -30ºC to 80ºC

• Frequency Range 50-60Hz

• Insulation level 3kV for 1 minute

• Continuous current, 1.2 x rated current

• Supplied with M6 screw terminals.

The following standard sizes are available for your convenience. However you may specify your own size specifications as detailed above.

	A	B	C	D	E		VA	CLASS
60-200A*	12.5	31	38	75	45		2.5	1
300-600A	12.5	57	32	127	73		2.5	1
800-1000A	12.5	70	32	127	76		5	1
1200-2000A	25	82	32	140	89		10	1
2500-3500A	35	105	32	165	95		15	1
4000-5000A	45	150	38	225	110		15	1

* Busbar clamp not available, terminals located on E dimension