Reasonable price for XJM7-J Measuring box (Infrastructure Energy Measurement Box) for Uzbekistan Manufacturer

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USE:

XJM7-J metering box (infrastructure power metering box) is suitable in power supply system with AC 50HZ, rated voltage 380 / 220V , as the power measurement in construction site.

 

Meet GB7251.1-1997 and GB7251.3-1997 standards.

3C certificate:

XJM7-J Mgy Measurement Box)-2





Why we use 2 types of earthing on transformer || earthing transformer || earthing on transformer

http://www.allinterview.com/showanswers/78771/2-types-earthing-tranformer-ie-body-nutral-function-going-instal-5oo-kva-380-dg-.html

The two types of earthing are Familiar as Equipment earthing and system earthing. In Equipment earthing: body (non conducting part) of the equipment should be earthed to safeguard the human beings. System Earthing: In this neutral of the supply source (Transformer or Generator) should be grounded. With this, in case of unbalanced loading neutral will not be shifted .so that unbalanced voltages will not arise. We can protect the equipment also. With size of the equipment (transformer or alternator) and selection of relying system
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