ABB RET 541 Product Manual page 63

Transformer Terminal
Table 31: Measurement functions
Types of measurement IEC Symbol
General measurement/ mA/V/C/
analog input or analog
output
mA
Current 3I
3I
Io
Io
Voltage 3U
3U
Uo
Uo
Energy / Power E, P, Q, pf
Frequency f
Recording
Table 32: Control functions
Types of control Symbol

Circuit breaker 0

0

0

Disconnector 0

0

0
Measurement function
General measurement/
analog input on
RTD/analog module
Analog output on
RTD/analog module
Three-phase current
measurement, stage A
Three-phase current
measurement, stage B
Neutral current
measurement, stage A
Neutral current
measurement, stage B
Three-phase voltage
measurement, stage A
Three-phase voltage
measurement, stage B
Residual voltage
measurement, stage A
Residual voltage
measurement, stage B
Three-phase power and
energy measurement
System frequency
measurement
Transient disturbance
recorder
Control function
1 Circuit breaker 1 (2 state
inputs / 2 control outputs)
1 Circuit breaker 2 (2 state
inputs / 2 control outputs)
1 Direct open for CBs via
HMI
1 Disconnector 1...5
(2 state inputs / 2 control
outputs)
1 Three state disconnector
1 (3 state inputs/ 4 control
outputs)
1 Three-state disconnector
2 (3 state inputs/ 4 control
outputs)
RET 541, RET 543, RET 545
Function block code
MEAI1...8
MEAO1...4
MECU3A
MECU3B
MECU1A
MECU1B
MEVO3A
MEVO3B
MEVO1A
MEVO1B
MEPE7
MEFR1
MEDREC16
Function block code
COCB1
COCB2
COCBDIR
CODC1...CODC5
CO3DC1
CO3DC2
1MRS755543
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