The NDB-DOC^TM is a test instrument designed for distribution networks transformers 10kVA to 2500kVA. It can determine the presence of short circuits or an open circuit in the distribution transformer primary winding and also short circuits on the secondary winding. The NDB-DOC^TM is designed to be operated from an arial device or from the ground at the end of a hot stick without disconnecting the transformer’s secondary windings.

Features:

- For transformers up to 83kVA single phase or 2500kVA three phase (Pole mount or Pad mount).

- Measurement by contact on the transformer primary bushing and neutral/ground.

- Used on de-energized transformer.

- Detects primary transformer short-circuit, open circuit, and secondary short circuits.

- Visual and audible warning.

- Low battery indicator.

Advantages:

- No need for disconnecting transformer secondary windings therefore saving time.

- Reduces risks of hazards when putting fuses back online when the transformer windings are shorted.

- Conformity with the requirements for safety (IEC-TC78).

- Rugged Delrin® made casing, drop-safe.