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Lifasa MASTER control Var User Manual

Lifasa MASTER control Var
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5.9.- C/K FACTOR
The C/K factor is adjusted according to the reactive current provided by the smallest stage,
measured in the secondary of the current transformer (CT). The adjustment value of this factor
therefore depends on the power of the smallest stage, the ratio of the CTs and the network
voltage.
Table 42 and Table 43 provide the values to which the C/K should be adjusted for a 400 V AC
network between phases, various transformer ratios and powers of the smallest stage.
Table 42: C/K factor (table 1)�
CT Ratio
(Ip / Is)
Power of the smallest stage at 400 V (in kvar)
2�5 5�0 7�5 10�0 12�5 15�0 20�0 25�0 30�0 40�0 50�0 60�0 75�0 80�0
150/5 0.12 0.24 0.36 0.48 0.60 0.72 0.96
200/5 0.09 0.18 0.27 0.36 0.45 0.54 0.72 0.90
250/5 0.07 0.14 0.22 0.29 0.36 0.43 0.58 0.72 0.87
300/5 0.06 0.12 0.18 0.24 0.30 0.36 0.48 0.60 0.72 0.96
400/5 0.05 0.09 0.14 0.18 0.23 0.24 0.36 0.48 0.58 0.72 0.87
500/5 0.07 0.11 0.14 0.18 0.22 0.29 0.36 0.45 0.54 0.72 0.87
600/5 0.06 0.09 0.12 0.15 0.18 0.24 0.30 0.36 0.48 0.60 0.72 0.90 0.96
800/5 0.07 0.09 0.11 0.14 0.18 0.23 0.27 0.36 0.45 0.54 0.68 0.72
1000/5 0.05 0.07 0.09 0.11 0.14 0.18 0.22 0.29 0.36 0.43 0.54 0.57
1500/5 0.05 0.06 0.07 0.10 0.12 0.14 0.19 0.24 0.29 0.36 0.38
2000/5 0.05 0.07 0.09 0.11 0.14 0.18 0.22 0.27 0.28
2500/5 0.06 0.07 0.09 0.12 0.14 0.17 0.22 0.23
3000/5 0.05 0.06 0.07 0.10 0.12 0.14 0.18 0.19
4000/5 0.05 0.07 0.09 0.11 0.14 0.14
If the capacitor power reference of 440 V is used for a 400 V network voltage, the table is Table
43�
Table 43:C/K factor (table 2)�
CT Ratio
(Ip / Is)
Power of the smallest stage at 440 V (in kvar)
2�5 5�0 7�5 10�0 12�5 15�0 20�0 25�0 30�0 40�0 50�0 60�0 75�0 80�0
150/5 0.09 0.18 0.27 0.36 0.45 0.54 0.72 0.90
200/5 0.07 0.14 0.20 0.27 0.34 0.41 0.54 0.68 0.81
250/5 0.05 0.11 0.16 0.22 0.27 0.33 0.43 0.54 0.65 0.87
300/5 0.05 0.09 0.14 0.18 0.23 0.27 0.36 0.45 0.54 0.72 0.90
400/5 0.07 0.10 0.14 0.17 0.20 0.27 0.34 0.41 0.54 0.68 0.81
500/5 0.05 0.08 0.11 0.14 0.16 0.22 0.27 0.33 0.43 0.54 0.65 0.81 0.87
600/5 0.05 0.07 0.09 0.11 0.14 0.18 0.23 0.27 0.36 0.45 0.54 0.68 0.72
800/5 0.05 0.07 0.08 0.10 0.14 0.17 0.20 0.27 0.34 0.41 0.51 0.54
1000/5 0.04 0.05 0.07 0.08 0.11 0.14 0.16 0.22 0.27 0.33 0.41 0.43
1500/5 0.04 0.05 0.05 0.07 0.09 0.11 0.14 0.18 0.22 0.27 0.29
2000/5 0.04 0.05 0.07 0.08 0.11 0.14 0.16 0.20 0.22
2500/5 0.04 0.05 0.07 0.09 0.11 0.13 0.16 0.17
3000/5 0.04 0.05 0.05 0.07 0.09 0.11 0.14 0.14
4000/5 0.04 0.05 0.07 0.08 0.10 0.11
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Controller MASTER control VAR FAST
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Lifasa MASTER control Var Specifications

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BrandLifasa
ModelMASTER control Var
CategoryController
LanguageEnglish

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