How to Do Zs Test?
Methods for Determining Zs Direct Measurement of Zs Using an Earth Fault Loop Impedance Test Instrument. Adding the Result of the Value of External Earth Fault...
- Direct measurement of Zs using an earth fault loop impedance test instrument.
- Adding the result of the value of external earth fault loop impedance (Ze) to the measured value of (R1 + R2) at the end of the circuit. ...
- Measurement of Ze. ...
- Measurement of (R1 + R2)
How do you test Zs on a board?
You measure the Zs at the incomming terminals of the sub board. This is sometimes also called Zdb. At the end of the final circuits fed from this board will be a Zs for each circuit. This will be roughly Zs (for the board) + R1 + R2 ( for the final circuit) = Zs ( final circuit).
Is ZS test a live test?
EFLI testing is live testing. This Live testing involves working on or hear live conductors. It is unlawful to work on or near live conductors under Regulation 14 of the EAWR 1989 unless " it is unreasonable in all the circumstances for it to be dead".
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