METREL MI 3125 - Settings: RCD Test Standards

MI 3125 / MI 3125E EurotestCOMBO Quick-test guide
22
2.2.6 Line impedance - (phase-neutral, phase-phase)
Zline
 Used for testing between phases on a single or 3 phase system e.g. testing (L to N,
L1 to L2, L2 to L3 etc).
ΔU
 To check that a voltage in the installation stays above acceptable levels if the
highest current is flowing in the circuit.
1
Set function
2
Set subfunction
 Zline
 ΔU
3
Set parameters and limits
 Fuse type (--sets limit OFF, BS88-2, BS3036, BS88-3, BS1362, B, C, D)
 Fuse current rating (3 A ÷ 200 A)
 Fuse tripping time ( 0.4 s, 5 s)
 U
MAX
- maximum voltage drop [3.0 % ÷ 9.0 %].