K B Enterprises

Current Transformers (CTs) are instrument transformers used to measure or monitor current flowing in a circuit. In low voltage systems (typically up to 1kV, like 230V, 400V, 690V systems), metering CTs are used to step down the actual high current (e.g., hundreds of amps) to a small, manageable value (like 5A or 1A) that meters and protection relays can safely measure. Common Applications: Utility metering (billing) Industrial energy management systems Generator and motor current monitoring Low voltage switchboards Solar PV systems (for net metering) Battery energy storage systems (BESS)

A Protection CT is designed to monitor current and activate protection devices (like relays, breakers) during fault conditions (overcurrent, short circuit).Used in low voltage systems (typically ≤1000V), it steps down high fault currents into measurable signals for protective relays to trip breakers fast.Unlike metering CTs, which prioritize accuracy under normal current, protection CTs are built to stay accurate even during very high fault currents

Natural oil cooled transformers are supplied in M.S. tanks. In some cases, the tanks are provided with cooling radiators on two or all the four sides. As a standard practice, the tank is provided with oil fitting hole with cap, oil level indicator, drain plug, and earthing terminals. Input and output terminals are brought out generally on two opposite sides, either from the sides of the tanks or from the top of the tank. Plain unidirectional M.S. rollers are fitted on M.S. channels for base mounting.

AE also supply transformers in open execution, without any enclosure, when they are to be mounted inside a control panel or a cubicle.

The description given below are for single phase, three phase and three phase to single phase double wound transformers. It is valid only for double wound transformers and for phase voltage between 24 volts and 660 volts at a frequency of 50 Hz. For voltages beyond this range and for other frequencies will be made on request.

In case of Auto Wound Transformers though the entire range falls within our regular manufacture, their details depend very much on the transformation ratio, in addition to the capacity. Therefore special quotations should be obtained in individual cases. These include single phase and three phase Star-connected transformers, auto-boosters and off-load line voltage correcting transformers.