24
SENTRON T 7KG966, Product Information
E50417-B1050-C493-A2, Edition 09.2011
10 Measurands and Calculation of Measurands
Measurands
Circuit
Tolerance
limits
1)
Voltage V
ph-N
a-N, b-N, c-N ±0.2 %
Voltage V
ph-ph
a-b, b-c,
c-a,
Σ
2)
±0.2 %
Voltage unbalance
V
unbal
a-b, b-c, c-a
±0.2 %
Current I
a, b, c, N,
Σ
±0.2 %
Current unbalance
I
unbal
a, b, c
±0.2 %
Active power P
+ Demand, - Supply
a, b, c,
Σ
±0.5 %
Reactive power Q
+ inductive, - capacitive
a, b, c,
Σ
±0.5 %
Apparent power S
a, b, c,
Σ
±0.5 %
Power factor PF
3)
a, b, c,
Σ
±1 %
Active power factor cos
Φ
3)
a, b, c,
Σ
±1 %
Phase angle
Φ
3)
a, b, c,
Σ
±2°
Frequency f
a-N
see
4)
Active energy WP demand
a, b, c,
Σ
±0.5 %
Active energy WP supply
a, b, c,
Σ
±0.5 %
Reactive energy WQ inductive a, b, c,
Σ
±0.5 %