Voltage Drop - METREL EurotestXC MI 3152 Instruction Manual

MI 3152(H) EurotestXC (2,5 kV)

Voltage Drop

7.14
The voltage drop is calculated based on the difference of line impedance at connection points
(sockets) and the line impedance at the reference point (usually the impedance at the
switchboard).
Measurement parameters / limits
Fuse Type Selection of fuse type [Off, gG, NV, B, C, D, K, Custom]
Fuse I Rated current of selected fuse
Fuse t Maximum breaking time of selected fuse
Rated current for U measurement (custom value)
1)
I (U)
Isc factor Isc factor [0.20 ... 3.00]
2)
Test Test [Off, L-N, L/L, L1-N, L2-N, L3-N, L1-L2, L1-L3, L2-L3]
Earthing system Refer to chapter 4.6.5 Settings for more information.
Maximum voltage drop [3.0 % ... 9.0 %]
Limit(ΔU)
1)
Applicable if Fuse type is set to Off or Custom
2)
With Plug test cable or Plug commander Voltage drop is measured in the same way
regardless of the setting. The parameter is meant for documentation.
Refer to Fuse tables guide for detailed information on fuse data.
Connection diagram
Figure 7.49: Voltage drop measurement – connection of Plug commander and 3-wire test
Figure 7.48: Voltage drop menu
lead
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Tests and measurements