MARTINDALE ET4500 - RCD Testing

Martindale ET4000 / ET4500 Instrument operation
22
TAB
Selects the field to be changed.
UP / DOWN
Modifies selected field.
TEST
Confirms new date / time and exits.
ESC
Exits back to settings menu.
Function selector
switch
Exits back to selected test / measurement function
without changes.
Note:
 If the batteries are removed for more than 1 minute the set date and time will be
lost.
4.4.3 RCD testing
In this menu the standard used for RCD
tests can be set.
Figure 4.9: Selection of RCD test
standard
Keys:
UP / DOWN
Selects standard.
TEST
Confirms selected standard.
ESC
Exits back to settings menu.
Function selector
switch
Exits back to selected test / measurement function
without changes.
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

N
*)
I

N
2I

N
5I

N
General RCDs
(non-delayed)
t

> 300
ms
t

< 300 ms t

< 150 ms t

< 40 ms
Selective
RCDs
(time-delayed)
t

> 500
ms
130 ms < t

< 500
ms
60 ms < t

< 200
ms
50 ms < t

< 150
ms
Trip-out times according to BS 7671:
½I

N
*)
I

N
2I

N
5I

N
General
RCDs
(non-delayed)
t

> 1999
ms
t

< 300 ms t

< 150 ms t

< 40 ms
Selective
RCDs
(time-delayed)
t

> 1999
ms
130 ms < t

< 500
ms
60 ms < t

< 200
ms
50 ms < t

< 150
ms
Maximum test times related to selected test current for general (non-delayed) RCD