Manual 37353A
MFR 13 Packages - Protection Relay
© Woodward
Page 9/91
Package Functional Descriptions
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Depending on the model, the unit is equipped with the following functions
Function
Package
GP
GPX
GPX-I
GPY-I
GPY-I-N
K08
General functions
1 ready for operation relay output (normally open contact)
9
9
9
9
9
9
Additional freely configurable relay outputs (2 change-over contacts)
9
9
9
9
9
9
1 synch-check relay output (normally open contact)
9
9
9
9
9
Additional freely configurable relay outputs (4 change-over contacts)
9
9
9
9
9
Discrete input for blocking of protective functions or remote acknowledgment
9
9
9
9
9
9
3 Analog outputs - 20/0/4 to +20 mA
9
9
Open-collector pulse output for kWh
9
9
Interface, bi-directional
9
#
9
#
9
#
9
#
Wide-range power supply (90 to 265 Vac/dc)
9
#
= RS485/Modbus RTU Slave
Protective functions
Three phase over / under voltage monitoring (2 levels)
V>, V<
9
9
9
9
9
9
Zero voltage monitoring
V
≠
0
9
9
9
9
9
9
Voltage asymmetry monitoring
Vas>
9
9
9
9
9
9
Three-phase over / under frequency monitoring (2 levels)
f>, f<
9
9
9
9
9
9
Overload monitoring
P>
9
9
9
9
9
9
Reverse/reduced power monitoring
-P<
9
9
9
9
9
9
Unbalanced load monitoring
Ias>
9
9
9
9
9
9
Reactive power monitoring (loss of excitation monitoring)
-Q<, Q>
9
9
9
9
9
9
Ground fault monitoring, calculated from I
L1
+I
L2
+I
L3
I
E
>>
9
9
Independent time-overcurrent monitoring
I>, I>>, I>>>
9
9
9
9
9
9
Inverse time overcurrent monitoring (according to IEC)
I
a
>
9
9
9
9
9
9
Inverse time-overcurrent monitoring with voltage restraint
I>, I>> (V<)
9
9
9
9
9
9
Synchro-Check
9
9
9
9
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.
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.