Provides all components that are required for paralleling LTC Transformers

using the Circulating Current Method

The M‑0115A Parallel Balancing Module includes all the components that

must be added to load tapchanging (LTC) transformers to permit them to

operate in parallel, using the circulating current method. The transformer

controls must have a 0.2 A input for load and circulating current. Through

the use of a circulating current sensitivity adjustment, the M‑0115A avoids

the problems of hunting (caused by too much sensitivity), or permitting

the transformers to be several steps apart (caused by too little sensitivity).

The M‑0115A conforms to the procedure described in ANSI C57.12.10‑1988.

paragraph 10.2.

Current Inputs

Rated at 0.2 A, 12 VA, 50/60 Hz.

Current Ratings

Either winding K1. K2 or ACT from terminal TB1‑1 to TB1‑5 is rated for 0.2 A

continuous.

All windings will withstand the following: 0.4 A continuous, 2.9 A for 5 sec;

3.3 A for 4 sec; 4.0 A for 3 sec;

5.0 A for 2 sec.

Cores are unsaturated at 12 VA burden.