Kuhlman SP–061 Current Transformer

Manufacturer: Kuhlman

The core and coil assembly is fully encapsulated with resin and then on 3 sides with an aluminum shell. The aluminum shell, provided in a variety of window sizes, is cut in two to provide the split core capability and also serves as a ground shield. The core halves on the side opposite the fl exible conduit can opened as far as needed to fi t around the conductor. Once in place the halves are joined back together and secured with stainless steel hardware.

For permanent installations it is recommended that silicone RTV be used to seal the core gap areas from ingression of moisture.

The fl exible weather-tight conduit is used to interconnect the two winding halves together. The leads are pre-wired and should not be removed. All connections from the bottom half of the core are terminated to their dedicated positions. These connections need not be removed while wiring the secondary circuit. The black plastic main conduit box contains the secondary terminals for instrumentation wiring, and the small metallic terminal box, opposite the main box, does not need to be opened or removed and is so marked on its cover. The secondary terminals are ¼”-20 studs with fl at, lock and cupped washers located. The conduit box has (1) 1”-11.5 NPT hub available.

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Features Applications Model

The SP-061 can provide up to 0.3 Class accuracy for metering with burdens of B0.1 up to B1.8 and up to C800 for relay applications (ratings are specifi c to each ratio). The transformer is accurate through its Rating Factor, and can be used continuously to this level.
The SP is designed for mounting around the bushings of a power transformer, circuit breaker or cable terminator (pothead). The unit must be mounted on a fl at surface to eliminate any tension on the seams of the split-core CT. Resin pads can be provided to eliminate any water welling. It is important that no metallic bracket or plate extend from the OD to the ID on the H2 (bottom) side as this will create a shorted electrical turn around the core and cause mis-operation of the CT.

The SP-061 outdoor, split-core bushing current transformer (BCT) is a 600 volt, 10kV BIL rated unit. This unit can be applied over higher rated system voltages provided suffi cient insulation is available on the point of application. Primary current ratios are available from 200:5 to 5000:5 with a Rating Factor of up to 2.0. This unit is convenient to install where the primary conductor cannot be broken or opened. This dry-type, solid-cast, split-core CT will operate with reasonable accuracy for metering or relay applications.

Mfr. Part No.	Description
SP–061	Outdoor 600V, 10kV BIL, Single, Dual & Multi Ratios

Kuhlman SP–061 Current Transformer

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