Numerical generator protection
ABB Switzerland Ltd
Utility Automation
REG316*4
1MRK502004-Ben
Page 7
Fig. 4
Analog inputs (9 channels max.)
Directional overcurrent protection
The directional overcurrent protection func-
tion is available either with inverse time or
definite time overcurrent characteristic. This
function comprises a voltage memory for
faults close to the relay location. The function
response after the memory time has elapsed
can be selected (trip or block).
Frequency function
The frequency function is based on the mea-
surement of one voltage. This function is able
to be configured as maximum or minimum
function and is applied as protection function
and for load shedding. By multiple configura-
tion of this function almost any number of
stages can be realized.
Rate-of-change of frequency
This function offers alternatively an enabling
by absolute frequency. It contains an under-
voltage blocking facility. Repeated configu-
ration of this function ensures a multi-step
setup.
Measuring
Both measuring functions measure the single-
or three-phase rms values of voltage, current,
frequency, real power and apparent power for
display on the local HMI or transfer to the
station control system. A choice can be made
between phase-to-neutral and phase-to-phase
voltages.
Ancillary functions
Ancillary functions such as a logic and a de-
lay/integrator enable the user to create logical
combinations of signals and pick-up and reset
delays.
A run-time supervision feature enables
checking the opening and closing of all kinds
of breakers (circuit-breakers, isolators,
ground switches...). Failure of a breaker to
open or close within an adjustable time
results in the creation of a corresponding sig-
nal for further processing.
Plausibility check
The current and voltage plausibility functions
facilitate the detection of system asymmet-
ries, e.g. in the secondary circuits of c.t’s and
v.t’s.
Sequence of events recorder
The event recorder function provides capacity
for up to 256 binary signals including time
marker with a resolution in the order of milli-
seconds.
Disturbance recorder
The disturbance recorder monitors up to 9
analogue inputs, up to 16 binary inputs and
internal results of protection functions. The
capacity for recording disturbances depends
on the duration of a disturbance as determi-
ned by its pre-disturbance history and the
duration of the disturbance itself. The total
recording time is approximately 5 s.
Human machine interface (HMI) - CAP2/316
For local communication with REG316*4,
there is the setting software CAP2/316 availa-
ble which is based on Windows. This soft-
ware runs under the following operating sys-
tems:
• Windows NT 4.0
• Windows 2000
This optimal programming tool is available
for engineering, testing, commissioning and
operation. The software can be used either
ON-LINE or OFF-LINE and furthermore
contains a DEMO mode.
V ariant
1
2 3 4 5 6 7
CT's protection
characteristic
9
6 3 3 6 3 3 1A , 2A or 5A
CT's measuring
characteristic
-
-
3
- 1 1
- 1A , 2A or 5A
V T's
-
3 3 6 2
5 2 100 V or 200 V
V T's
-
-
-
-
-
- 4 only for 100% stator and rotor earth
fault protection and for 95% stator
earth fault protection
Summary of Contents for REG316 4 Series
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Page 427: ...REG 316 4 1MRB520049 Uen Rev B ABB Switzerland Ltd 4 29 Fig 4 13 Locus of the load angle d 90 ...
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