Electrical test equipment for monitoring the operation of low, high and medium voltage transformers and circuit breakers etc. Such equipment is expensive because of the extreme nature of the equipment they are testing. The test equipment must withstand high voltages, current fluctuations and other critical criteria without affecting test performance. Therefore, this product is made from strong materials and is properly calibrated, which can increase the selling price. These factors are responsible for creating barriers to the growth of the global electrical testing services market.