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M133C Electric Power/Energy Calibrator
Operation manual
46
5.
280V range lock
-
OFF position (default state)
140V range is used for values between 70.001V and 140.000V
280V range is used for values between 140.001V and 280.000V
-
ON position
280V range is used for values between 70.001V and 280.000V
Feature is active for single harmonic modes only.
6.
Current coil
Sets the calibrator for connection the 25/50-turn current coil (clamp ammeters calibration). The
coil multiplies the output current either 25 times or 50 times depending on set parameter. By
selecting an item from the list Coil Off, Coil x25 and Coil x50 type of connected current coil can
be selected.
7.
Synchronization
Sets the external synchronization of the output signal. By selecting an item from the list Internal
(internal synchronization), Power line (synchronization to the power supply), External IN1
(synchronization to the passive signal on input 1 – output colector or relay contact), External IN2
(synchronization to the active signal on input 2) a External IN3 (synchronization to the active
signal on input 3) type of frequency synchronization coil can be selected.
Note:
External synchronized signal has larger distortion than internal synchronized signal because of fine
frequency tuning.
8.
Active channels (Pac, Eac)
Sets the number of controlled channels in the three phase configuration. This parameter is valid
only for Pac Basic and Eac Basic function modes. By selecting an item from the list 1 (output is
from the main channel only), 1-2 (output from Channel 1 and Channel 2) and 1-2-3 (output from
all three channels) number of used channels can be selected.
9.
Harmonic components
Harmonic components can be entered in two ways:
1)
% of RMS value
RMS value is constant (isn’t changed by changing harmonic components value). New
RMS value changes amplitude of all harmonic components.
2)
% of fundamental
Fundamental value is constant (isn’t changed by changing harmonic components value).
RMS value is changed by entering new harmonic components value.
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