Clamp Current; Prcd Testing; Rcd Testing; General Data - METREL MI 3321 MultiservicerXA Instruction Manual

MI 3321 MultiservicerXA

3.11 Clamp current

True RMS current using 1000:1 current clamp
Range
0.00 mA ... 9.99 mA
10.0 mA ... 99.9 mA
100 mA ... 999 mA
1.00 A ... 9.99 A
10.0 A ... 24.9 A
*It does not consider accuracy of current transformer.
Pass levels [mA]: ...................... 0.25, 0.50, 0.75, 1.00, 1.50, 2.25, 2.50, 3.00, 3.50, 5.00,
Test duration [s]: ....................... 5, 10, 30, 60, 120, none
Test terminals:
Clamp current
Temperature coefficient outside reference temperature limits is 1 % of measured value
per C

3.12 PRCD testing

Portable RCD trip-out time
Range
0 ms ... 300 ms(½I
0 ms ... 300 ms (I
N
0 ms ... 40 ms (5I
Test currents (I ): .................... 10 mA, 15 mA, 30 mA
N
Test current multipliers: ............ ½I
Start angle: ............................... 0, 180, both
Test modes: .............................. single, autotest
Voltage range: .......................... 100 V ... 264 V (45 Hz ... 65 Hz)
Pass / Fail limits:
½I
N
t > 300 ms

Test terminals:
PRCD testing

3.13 RCD testing

3.13.1

General data

Nominal residual current [mA]: . 10, 30, 100, 300, 500, 1000
Test current options: ................. 0.5IN, IN, 2IN, 5IN
Test currents accuracy: ............ -0 / +0.1I; I = IN, 2IN, 5IN
Resolution
0.01 mA
0.1 mA
1 mA
0.01 A
0.1 A
9.00, none
Clamp inputs
)
N
)
)
N
N
I
N
t < 300 ms

TP1 test sockets
Accuracy*
(5 % of reading + 10 digits)
(5 % of reading + 5 digits)
(5 % of reading + 5 digits)
(5 % of reading + 5 digits)
(5 % of reading + 5 digits)
Resolution
1 ms
1 ms
1 ms
, I , 5I
N N
22
Technical specifications
Accuracy
3 ms
5I
N
t < 40 ms
