Earthing System (Mi 3102 Bt Only); Rcd Testing - METREL EurotestXE Instruction Manual

MI 3102(H) BT EurotestXE

4.4.4 Earthing system (MI 3102 BT only)

In this menu the earthing system can be set.
Options are:
TN/TT,

IT.

Keys:
UP / DOWN
TEST
ESC
Function selector

4.4.5 RCD testing

In this menu the used standard for RCD tests
can be set.
Keys:
UP / DOWN
TEST
ESC
Function selector
Maximum RCD disconnection times differ in various standards.
The trip-out times defined in individual standards are listed below.
Trip-out times according to EN 61008 / EN 61009:
½I
General RCDs
t > 300 ms t

(non-delayed)
Selective RCDs
t > 500 ms 130 ms < t

(time-delayed)
Test according to standard IEC/HD 60364-4-41 has two selectable options:
IEC 60364-4-41 TN/IT and

IEC 60364-4-41 TT

The options differ to maximum disconnection times as defined in IEC/HD 60364-4-41 Table
41.1.
½I
General RCDs
t > 999 ms t

(non-delayed)
Selective RCDs
t > 999 ms 130 ms < t

(time-delayed)
Selects option.
Confirms selected option and exits to settings menu.
Exits back to settings menu.
Exits back to main menu without changes.
Selects standard.
Confirms selected standard.
Exits back to settings menu.
Exits back to main menu without changes.
*)
I
N N
< 300 ms


*)
I
N N
< 999 ms


Figure 4.8: Selection of earthing system
Figure 4.9: Selection of RCD test standard
2I
N
t < 150 ms

< 500 ms 60 ms < t
2I
N
t < 150 ms

< 999 ms 60 ms < t
26
Instrument operation
5I
N
t < 40 ms

< 200 ms 50 ms < t

5I
N
t < 40 ms

< 200 ms 50 ms < t

< 150 ms

< 150 ms
