Measurements of electrical quantities. Current measurement

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Section 1 General Rules

Measurements of electrical quantities. Current measurement

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Encyclopedia of radio electronics and electrical engineering / Rules for the installation of electrical installations (PUE)

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1.6.6. Current measurement should be made in all voltage circuits where it is necessary for the systematic control of the process or equipment.

1.6.7. DC current measurement should be carried out in circuits:

1) DC generators and power converters,

2) storage batteries, charging, recharging and discharging devices;

3) excitation of synchronous generators, compensators, as well as electric motors with controlled excitation.

DC ammeters should be double sided if reversal of current is possible.

1.6.8. In three-phase alternating current circuits, as a rule, the current of one phase should be measured.

Measurement of the current of each phase must be carried out:

1) for synchronous turbogenerators with a capacity of 12 MW and more;

2) for power lines with single-phase control, lines with series compensation and lines for which the possibility of long-term operation in open-phase mode is provided, in justified cases, it may be possible to measure the current of each phase of power lines of 330 kV and higher with three-phase control;

3) for electric arc furnaces.

See other articles Section Rules for the installation of electrical installations (PUE).

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