Manual 37140A
MFR 11 - Protection Relay
© Woodward
Page 9/80
Extent of Functions
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Depending on the model, the unit is equipped with the following functions
Function
Option
Package
MP
NU
VDEW
G59
G59N
SC
SC+
N
General functions
Additional freely configurable relay outputs (4 change-over contacts, 1 nor-
mally open contact)
R
9
9
Additional freely configurable relay outputs (2 change-over contacts)
Standard
9
9
9
9
9
9
9
1 ready for operation relay output (normally open contact)
Standard
9
9
9
9
9
9
9
Discrete input for blocking of protective functions or remote acknowledgment
Standard
9
9
9
9
9
9
9
Sealing function (software up to version 1.9xx)
Standard
9
9
9
9
9
9
9
Password system (software starting from version 2.0xx)
Standard
9
9
9
9
9
9
9
1 Analog outputs - 20/0/4 to +20 mA
A1
1 Analog outputs - 10/0 to 10 V
A2
3 Analog outputs - 20/0/4 to +20 mA
A3
4 Analog outputs -10/0 to 10 V
A4
6 Analog outputs -20/0/4 to +20 mA
A6
8 Analog outputs -10/0 to 10 V
A8
Interface, uni-directional
SU
Interface, bi-directional
SB
Interface, CAN bus incl. remote control
SF
Wide-range power supply (90 to 265 Vac/dc)
N
9
9
9
#
= RS-485/MOD-Bus RTU Slave
Protective functions
Three-phase over-/undervoltage monitoring (2 limits)
V>, V<
U
9
9
9
9
9
Zero voltage monitoring: dead bus start (close CB to dead busbar)
V
≠
0
UN
9
9
Voltage asymmetry monitoring
V
AS
>
U
9
9
9
9
9
Two-phase over-/underfrequency monitoring (2 limits)
f>, f<
U
9
9
9
9
9
Vector/phase shift monitoring
d
ϕ
/dt
V
9
9
9
df/dt ROCOF monitoring
df/dt
D
9
9
Synch-check function (not available for 690 V versions)
I
E
>, I
E
>>
YC
9
9
Packages
MFR 11 with
Options U
9
MFR 11 with
Options U/N
9
MFR 11 with
Options U/V
9
MFR 11 with
Options U/V/D/R
9
MFR 11 with
Options U/V/D/R/N
9
MFR 11 with
Options UN/YC
9
MFR 11 with
Options UN/YC/N
9
Intended Use
The unit must only be operated in the manner described by this manual. The prerequisite for a
proper and safe operation of the product is correct transportation, storage, and installation as well as careful op-
eration and maintenance.