METREL MI 3125 User Manual

MI 3125 InstaltestCOMBO Settings
22
4.2.3 RCD standard
In this menu the used standard for RCD
tests can be set.
Figure 4.4: Selection of RCD test
standard
Keys:
UP / DOWN
Selects standard.
TEST
Confirms selected standard.
Function selectors
Exits back to main function menu.
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
ΔN
*)
I
ΔN
2×I
ΔN
5×I
ΔN
General RCDs
(non-delayed)
t
Δ
> 300 ms t
Δ
< 300 ms t
Δ
< 150 ms t
Δ
< 40 ms
Selective RCDs
(time-delayed)
t
Δ
> 500 ms 130 ms < t
Δ
< 500 ms 60 ms < t
Δ
< 200 ms 50 ms < t
Δ
< 150 ms
Trip-out times according to EN 60364-4-41:
½×I
ΔN
*)
I
ΔN
2×I
ΔN
5×I
ΔN
General RCDs
(non-delayed)
t
Δ
> 999 ms t
Δ
< 999 ms t
Δ
< 150 ms t
Δ
< 40 ms
Selective RCDs
(time-delayed)
t
Δ
> 999 ms 130 ms < t
Δ
< 999 ms 60 ms < t
Δ
< 200 ms 50 ms < t
Δ
< 150 ms
Trip-out times according to BS 7671:
½×I
ΔN
*)
I
ΔN
2×I
ΔN
5×I
ΔN
General RCDs
(non-delayed)
t
Δ
> 1999 ms t
Δ
< 300 ms t
Δ
< 150 ms t
Δ
< 40 ms
Selective RCDs
(time-delayed)
t
Δ
> 1999 ms 130 ms < t
Δ
< 500 ms 60 ms < t
Δ
< 200 ms 50 ms < t
Δ
< 150 ms
Trip-out times according to AS/NZ
**)
:
½×I
ΔN
*)
I
ΔN
2×I
ΔN
5×I
ΔN
RCD type
I
ΔN
[mA] t
Δ
t
Δ
t
Δ
t
Δ
Note
I
≤ 10
40 ms 40 ms 40 ms
II
> 10 ≤ 30
300 ms 150 ms 40 ms
III > 30
> 999 ms
300 ms 150 ms 40 ms
500 ms 200 ms 150 ms
Maximum break time
IV
S
> 30 > 999 ms
130 ms 60 ms 50 ms Minimum non-actuating time
*)
Minimum test period for current of ½×I
ΔN
, RCD shall not trip-out.
**)
Test current and measurement accuracy correspond to AS/NZ requirements.

METREL MI 3125 Specifications

General

Type	Multifunction Installation Tester
Insulation Resistance	Yes
Continuity Test	Yes
Loop Impedance	Yes
RCD Testing	Yes
Voltage Measurement	Yes
Frequency Measurement	Yes
Display	LCD
Power Supply	6 x 1.5 V AA batteries
Loop Resistance Resolution	0.01 Ω
Frequency	45 - 65 Hz
Line Voltage Resolution	1 V
Insulation Resistance Test Voltage	50 V, 100 V, 250 V, 500 V, 1000 V
Insulation Resistance Resolution	0.01 MΩ
Continuity Resistance Resolution	0.01 Ω
Test Current	200 mA
DC Voltage	Up to 600 V
Loop Resistance	0.0 Ω - 1999 Ω
Line Voltage	Up to 550 V
Line Voltage Accuracy	±2% ±2 digits
Rated Residual Current	10 mA, 30 mA, 100 mA, 300 mA, 500 mA
Insulation Resistance Range	0.01 MΩ to 1 TΩ
Continuity Resistance	0.0 Ω - 1999 Ω
Dimensions	220 x 103 x 55 mm
Operating Temperature	-10°C to 50°C
Storage Temperature	-20°C to +60°C
Safety Standards	EN 61557
Loop Resistance Accuracy	±(5% + 3 digits)