Manual 37351A
MFR 11 Packages - Protection Relay
Page 8/59
© Woodward
Package Functional Descriptions
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Depending on the model, the unit is equipped with the following functions
Function
Package
MP
NU
VDEW
G59
G59N
SC
SC+
N
General functions
1 ready for operation relay output (normally open contact)
9
9
9
9
9
9
9
Additional freely configurable relay outputs (2 change-over contacts)
9
9
9
9
9
9
1
9
1
Additional freely configurable relay outputs (4 change-over contacts, 1 normally
open contact)
9
9
Discrete input for blocking of protective functions or remote acknowledgment
9
9
9
9
9
9
9
Password system
9
9
9
9
9
9
9
Wide-range power supply (90 to 265 Vac/dc)
9
9
9
Protective functions
Three-phase over-/undervoltage monitoring (2 limits)
V>, V<
9
9
9
9
9
9
9
Zero voltage monitoring: dead bus start (close CB to dead busbar)
V
≠
0
9
9
Voltage asymmetry monitoring
V
AS
>
9
9
9
9
9
9
9
Three-phase over-/underfrequency monitoring (2 limits)
f>, f<
9
9
9
9
9
9
9
Vector/phase shift monitoring
d
ϕ
/dt
9
9
9
df/dt ROCOF monitoring
df/dt
9
9
Synch-check function (not available for 690 V versions)
I
E
>, I
E
>>
9
9
1
only 1 freely configurable relay, the other one is fixed to synch-check
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.
NOTE
This manual has been developed for all available packages. Inputs/outputs, functions, configuration
screens, and other details described, which do not exist on your unit, may be ignored.
The present manual has been prepared to enable the installation and commissioning of the unit. Due to
the large variety of parameter settings, it is not possible to cover every combination. The manual is
therefore only a guide. In case of incorrect entries or a total loss of functions, the default settings may
be taken from the list of parameters enclosed at the rear of this manual.