Rishabh RISH LM 1340, Operating Manual

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I
mpulse Constant
Depending on nominal system nominal power, the number of impulses are created to measure the
energy.The number of impulses for particular nominal power is set which indicates 1kWh
energy.Energy can be Watt,VA or Var.Following table shows impulses corresponding to nominal
system energy.
System nominal power Impulse constant
<=100 64000*
<=200 32000*
<=400 16000
<=800 8000
<=1600 4000
<=3200 2000
>3200 1000
1. For per phase / 1P2W System Energy,
Nominal Power = PT Sec (LL) * CT Sec / 1.732
2. For Three Phase System Energy,
Nominal Power = 3 * PT Sec (LL) * CT Sec / 1.732
*Note
:
Impulse Constant of 16000 and 32000 are applicable for 1P2W System and per phase energy of
Three Phase System.
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