1MRS750527-MUM
REF 54_
103
Feeder Terminal
Technical Reference Manual, General
7. Ordering Information
7.1. Order number
The following is to be specified when ordering REF 54_ feeder terminals:
• Order number (see Fig. 7.1.-1 below)
• Display language combination (for example English-German)
• Quantity of feeder terminals
Each REF 54_ feeder terminal has a specific order number that identifies the feeder
terminal type as well as the hardware and the software as described in
Fig. 7.1.-1
below. The order number is labeled on the marking strip on the front panel of the
feeder terminal delivered, for example Order No: REF543KC127AAAA.
A050601
Fig. 7.1.-1 Order number of REF 54_
The functionality level determines the extent of the selection of function blocks
available for the feeder terminal. For more detailed information on the separate
function blocks included in each selection, please consult your relay supplier.
In addition, optional functions, such as fault locator, power quality, capacitor bank
protection and power factor control functions are available.
Terminals can optionally be ordered with an ANSI front panel.
Functionality level Selection of function blocks
C (Control) All control, condition monitoring and measurement functions
B (Basic) All control, condition monitoring and measurement functions,
basic protection functions
M (Multi) All control, condition monitoring, measurement and
protection functions
REF54_KC127AAAA
Software revision: A, B, C, D, E, F, G, H, K
Feeder terminal type: REF 541, REF 543, REF 545
Hardware number: 115, 118, 127, 129, 133
A = fixed display, B = external display module
Auxiliary voltage range of a power supply module and
voltage range of digital inputs
A: power supply: PS1/240 V (Medium) or PS2/240 V
U
r
= 110/120/220/240 V ac;
110/125/220 V dc
digital inputs: U
r
= 110/125/220 V dc
threshold voltage: U
t
= 80 V dc
B: power supply: PS1/240 V (High) or PS2/240 V
U
r
= 110/120/220/240 V ac;
110/125/220 V dc
digital inputs: U
r
= 220 V dc
threshold voltage: U
t
= 155 V dc
C: power supply: PS1/48 V (Low) or PS2/48 V
U
r
= 24/48/60 V dc
digital inputs: U
r
= 24/48/60/110/125/220 V dc
threshold voltage: U
t
= 18 V dc
A = without sensor, B = with sensor
Reserved for future use
Functionality level: C = Control, B = Basic, M = Multi