Specification (Contd.)
32
resistance. Ranges and accuracies are therefore derived from
the previous section.
LINE EARTH LOOP RESISTANCE MEASUREMENT AT 15
mA (to EN 61557-2)
Displayed Range
0,2 Ω to 2,00 kΩ
Intrinsic accuracy up to 200 Ω ± 3% ± 0,3 Ω
over 200 Ω ± 5% ± 5 Ω
Noise Immunity 1σ of reading within 0,3 Ω on a
normal domestic supply
Nominal Supply 230 V 50 Hz
Supply Voltage Range 100 - 280 V, 45 - 65 Hz
EN61557 Operating Range 5,0 Ω to 2,00 kΩ
RCD TESTING (to EN61557-6 up to 500 mA)
Selectable Ranges:
I
∆
n
, 30, 100, 300, 500, 1000 mA and
variable from 10 to 1000 mA
Test Facilities: Fault or contact voltage tests at
1
⁄2I
∆n
Loop and Earth resistance tests at
1
⁄2I
∆
n
No Trip tests at
1
⁄2I
∆n
Trip tests at
I
∆n,
5I
∆n
Fast Trip test at 150 mA
Ramp tests
RCD Types: General purpose, delayed (Selective)
and d.c. Sensitive
Nominal Supply: 230 V, 50 Hz
Supply range 100 - 280 V, 45 - 65 Hz
Note:- The maximum possible test current (including the 5I
multiplier) is 1000 mA for d.c. sensitive RCDs). These limits are
halved if the supply voltage is less than 200 V.
1
⁄2I
∆n
TEST
FAULT OR CONTACT VOLTAGE
Displayed range 0 V to 90 V
Measurement range 5 V to 90 V
LOOP
AND EARTH RESISTANCE (measured at
1
⁄2I
∆n
)
2 SECOND NO TRIP
TEST at
1
⁄2I
∆n
(optional)
The test current flows for 2 seconds. A tripped RCD will result in
a display of
< 1999 ms
Intrinsic Test Current accuracy
-8% / -2%
TRIP TESTS
I
∆n
Trip Test
This test will perform a short automatic
1
⁄2I
∆n
test, followed by a 30
I
∆n
10
30
100
300
500
1000
DISPLAY RANGE
0,01 kΩ to 9 kΩ
1 Ω to 3 kΩ
1 Ω to 900 Ω
0,1 Ω to 300 Ω
0,1 Ω to 180 Ω
0,1 Ω to 90 Ω
OPERATING RANGE
(As in EN 61557)
0,5 kΩ to 9 kΩ
170 Ω to 3 kΩ
50 Ω to 900 Ω
17 Ω to 300 Ω
10 Ω to 180 Ω
5 Ω to 90 Ω
To Next Page
Loading...
