Manual 37140A
MFR 11 - Protection Relay
© Woodward
Page 7/80
Chapter 1.
General Information
Introduction
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The MFR 11 model is a generator or mains protection unit packaged into one compact device. Typical applica-
tions are generators and switchgear equipment that require independent protection architecture. Different options
offer additional functionality
The detailed model description for the MFR 11 reads as follows:
MFR11
10 -h0000
B/
ABDEF..Z
Options according to list of options
.
These options can be found in the manual. Each chapter headline points out
if the described function is standard or has to be ordered optionally.
Mounting
[B].. Flush-mounting
[M].. DIN-rail/rear panel mounting
Hardware variation
non-standard models; e.g. additional relays
Current transformer, secondary
[0] = not available
Voltage transformer/PTs, secondary
[0] = not available
[1] = 100 Vac
[4] = 400 Vac
[7] = 690 Vac
Type
Examples:
•
MFR1110B/
U
(flush mounted, standard unit with 100 Vac PT inputs with
Option U
[over-/undervoltage,
voltage asymmetry, and over-/underfrequency monitoring, 3 relay outputs])
•
MFR1140B/
UVDRN
(flush mounted, standard unit with 400 Vac PT inputs with the
Options U/V/D/R/N
[over-/undervoltage, voltage asymmetry, and over-/underfrequency moni phase/vector shift and df/dt
ROCOF protection, 8 relay outputs, wide-range power supply])
