METREL MI 3321 MultiservicerXA, Instruction Manual

Page: 27 / 194

MI 3321 MultiservicerXA Technical specifications
27
Test current (at 230 V): ............. 6.5 A (10 ms)
Nominal voltage range: ............. 30 V
… 500 V (45 Hz … 65 Hz)
Pass limits: ............................... See Appendix C
Test terminals:
Z LINE
TP1 test socket
3.15.1 High precision line impedance
Measuring range according to EN 61557-3 is 12.0 m

… 1999 m

Measuring range (m

) Resolution (m

)
Accuracy
0.1
… 199.9
0.1

(5 % + 3 m

)
200
… 1999
1
Nominal voltage range: ................... 100 V
… 440 V
Nominal frequency: ......................... 50 Hz
Maximum test current (at 400V):..... 267 A (10 ms)
Calculation of prospective short-circuit current (standard voltage value):
U
L-N
= 230 V

10 %
U
L-L
= 400 V

10 %
Calculation of prospective short-circuit current (non-standard voltage value):
U
N(L-N)
= 230 V

10 %
U
N(L-L)
= 400 V

10 %
230 V < U
N
< 400 V
C
MAX
1.05 1.10
C
MIN
0.95 1.00
Test terminals:
High precision impedance
A1143: P1, P2, C1, C2
Z
V 230
= I
K
Z
V 400
= I
K
L - L
L) - L ( N MAX
ph 3 KMAX
Z
2
×
3
U × C
= I
HOT L) - (L
L) - L ( N MIN
ph 3 KMIN
Z
2
×
3
U × C
= I
L - L
L) - L ( N MAX
ph 2 KMAX
Z
U × C
= I
HOT L) - (L
L) - L ( N MIN
ph 2 KMIN
Z
U × C
= I
N - L
N) - L ( N MAX
N) - (L KMAX
Z
U × C
= I
HOT N) - (L
N) - L ( N MIN
N) - (L KMIN
Z
U × C
= I
2
L - L
2
L - L L - L
X + R = Z
( )
2
L - L
2
L - L HOT L) - (L
X + R × 5 . 1 = Z
2
N - L
2
N - L N - L
X + R = Z
( )
2
N - L
2
N - L HOT N) - (L
X + R × 5 . 1 = Z