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Fault loop impedance measurement

1. Z LINE: line impedance phase-neutral / phase (METREL MI 3100 s)
2. Z LOOP: impedance of the fault loop phase / earth (METREL MI 3100 s)
3. Zs rcd: impedance of the fault loop with low test current (METREL MI 3100 s)
4. Zs: impedance of the fault loop with high test current (Thytronic Impmeter2).

Item: Multifunction Tester
Model: METREL MI 3100 s + Thytronic Impmeter2
Reference Laboratory: ISO IEC 17025 accreditated laboratory or NMI

Measurement points:

 Metrel Measurement points
Z line 0.50 Ω – 1.80 Ω – 5.00 Ω – 50.0 Ω – 100.0 Ω – 180 Ω
Z loop 0.50 Ω – 1.80 Ω – 5.00 Ω – 50.0 Ω – 100.0 Ω – 180 Ω
Zs rcd 0.50 Ω – 1.80 Ω – 5.00 Ω
Impmeter2 Measurement points
Zs 100 mΩ -130 mΩ – 200 mΩ – 0.900Ω

Reference Laboratory CMC:

Value CMC
Da 0.01 Ω a 0.2 Ω 2 mΩ
Da 0.2 Ω a 1 Ω 8.3 mΩ + 6.1 x 10^-3 x IZI
1 Ω 10 mΩ
1,8 Ω 18 mΩ
5 Ω 30 mΩ
10 Ω 60 mΩ
18 Ω 100 mΩ
Value CMC
50 Ω 300 mΩ
100 Ω 500 mΩ
180 Ω 1 Ω
500 Ω 2.5 Ω
1 kΩ 5 Ω
1,8 kΩ 10 Ω

Note: Indications regarding organizational methods, presentation and sending of results will be reported in the PT participation protocol

Scheduled start date for PT: September 2022

Payment: € 990 – by bank transfer 50% on order 50% delivery of the results

For further information

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