ABB REM 54 Series, Technical Reference Manual

Page: 45 / 110

1MRS750915-MUM
REM 54_
45
Machine Terminal
Technical Reference Manual, General
5.1.6.2. Technical data of the measuring devices
When the machine terminal is configured, the technical data of the measuring
devices is set in separate dialog boxes in the Relay Configuration Tool. The set
values will affect the measurements carried out by the machine terminal.
For storing the values listed below, refer to section “Storing of parameters and
recorded data” on page 38.Values to be set for a current transformer are:
• rated primary current (0...6000 A) of the primary current transformer
• rated secondary current (5 A, 2 A, 1 A, 0.2 A) of the primary current transformer
• rated current (5 A, 1 A, 0.2 A) of the current measuring input (= rated current of
the matching transformer of the machine terminal)
• amplitude correction factor (0.9000...1.1000) of the primary current transformer
at rated current
• correction parameter for the phase displacement error of the primary current
transformer at rated current (-5.00°...0.00°)
• amplitude correction factor of the primary current transformer at a signal level of
1% of the rated current (0.9000...1.1000)
• correction parameter for the phase displacement error of the primary current
transformer at a signal level of 1% of the rated current (-10.00°...0.00°)
Values to be set for a voltage transformer are:
• rated voltage of voltage input (same as the secondary rated voltage of the primary
voltage transformer connected to the voltage input, 100 V, 110 V, 115 V, 120 V)
• rated voltage of primary voltage transformer (0...440 kV)
• amplitude correction factor of the primary voltage transformer voltage at rated
voltage (0.9000...1.1000)
• correction parameter for the primary transformer phase displacement error at
rated voltage (-2.00°... 2.00°)
Values to be set for a current sensor (Rogowski coil) are:
• secondary rated voltage of the current sensor used at the preset primary rated
current (0...300 mV)
• primary rated current of the current sensor used (0...6000 A)
• amplitude correction factor of the current sensor used at rated current
(0.9000...1.1000)
• correction parameter for the phase displacement error of the current sensor
(-1.0000°...1.0000°)
1
1. Only included in Release 2.0 or later, refer to section “Revision identification” on
page 97. Note that this parameter can only be set via the HMI or the Relay Setting
Tool.