GHIELMETTI GKV 10x45 621 SK R LDP User manual

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Tripping matrix
for
Generator Protection Systems
GKV 10x45 621 SK R LDP
Part. No. 674.115.202.00
250VDC
Operation Manual

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Introduction
Thank you for choosing a GHIELMETTI product.
We are convinced that your choice will prove to be a wise and worthy decision for many
years to come. Your GHIELMETTI product has been tested for performance at the factory
according to the specifications given for the system in this manual. However, before
putting the device into operation we kindly ask you to read this manual and act
according to the instructions given. All information given in this document is property of
Ghielmetti AG. To the knowledge of Ghielmetti AG there are no errors in the manual.
Should any errors be discovered, please notify us. Ghielmetti will under no
circumstances accept responsibility neither for errors in this manual, nor consequences
of such errors.
Warranty
Ghielmetti warrants products for one year from date of purchase against defects in
materials and workmanship. During the warranty period, Ghielmetti will, at its option,
either repair or replace products that prove to be defective. The warranty does not cover
any defects caused by accident, misuse, neglect, improper or inadequate installation or
maintenance by buyer, buyer-supplied software or interfacing, unauthorized
modification, operation outside of the environmental specifications for the product, or
improper site preparation or maintenance.
Safety Considerations
General
This product and related documentation must be reviewed for familiarization with safety
markings and instructions before operation. This product has been designed and tested
in accordance with international standards.
STOP
Safety Earth Ground
This is a Safety Class 1 product (a protective earth terminal GND is provided).
An uninterrupted safety earth ground must be provided from the main power source to
the product input wiring terminals, power, cord, or supplied power cord set.
Whenever it is likely that the protection has been impaired, the product must be made
inoperative and secured against any unintended operation.
Installation
Initial Inspections
Check the contents of the shipment for completeness and possible transport damage.
If the contents are incomplete or damaged, contact Ghielmetti immediately to get the
concerned parts repaired or replaced.
Before Applying Power
Verify that the product is configured to match the available main power source per the
input power configuration instructions provided in this manual.
Servicing
Servicing, adjustments, maintenance or repair of this product may be performed by
qualified personnel only.

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Functional description
The tripping matrix GKV 10x45 621 SK R LDP is a component of a generator
protection system. The tripping matrix provides a transparent, easily programmable
facility for combining output commands of the trip outputs of individual protection
devices with plant items such as the circuit-breakers, de-excitation etc. The matrix was
developed for marshalling tripping commands of large power stations. With its help, the
tripping schematic can be temporarily changed, e.g. in case of a generator circuit-
breaker revision. If the software matrix incorporated in each generator protection unit is
used for marshalling the tripping commands, the marshalling in the protection units
must be changed for this purpose.
The tripping matrix assigns the tripping signals arriving at the matrix columns (from the
solid-state protection relays) to the freely programmable matrix lines to which the
tripping modules are connected.
Mode of Operation
The tripping matrix GKV 10x45 621 SK R LDP has 45 columns (for 45 signals from
protection units) and 10 rows (for 10 signals to tripping modules)
High reliability diode plugs (black handle) are used for programming the matrix, the
reliability being attained by generous over-rating with respect to forward current and
reverse voltage.
The diode plugs are inserted from the front and enable any vertical column (signals from
the protection relays) to be connected to any horizontal line so that the tripping signals
can be transmitted to the tripping module.
Each column has a LED for indicating tripping commands. The display is stored.
Each additional outgoing tripping command received additionally sets a group memory,
which, for example, can be used for remote signalling and switching a cubicle lamp.
All signals remain stored even when the tripping channels are interrupted or when the
red central connecting plug is removed.
The memories can be reset directly by a push-button "Reset" or by remote reset.
The function of all LED’s may be checked by pressing the "LED-Test" button.
The power supply of the relays and memory functions is 250VDC and feed an additional
5 VDC voltage for the LED function. The monitoring of the power supply is done by two
relay contacts.
Optional: A lockable acryl-glass-cover inhibits unauthorised access to the programming
matrix.
Unused diode and connecting plugs are stored in a pin park.

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Control elements of the Tripping Matrix
Connecting and Diode plugs
45 Input signals
from protection system
LED indicating incoming
switching pulse
10 Output signals
LED indicating outgoing
switching pulse
Programming matrix
Programming is done by Diode Plugs:
Type: GDS 621 ZS/20 sw
674.212.002.00
Pin Park
Reset
Of all LED indications
LED-Test
To test if all LEDs works
Power ON
indication LED
Diode Plug Test Unit
Type: GDS 621 ZS/20 sw
674.212.002.00
If the LEDs flash after insert into the left position
and do not flash after insert in the right position,
then the diode plug is o.k.
Acryl glass cover
upturning

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Interconnecting the Tripping Matrix
Input screw mount connectors
max. 30 input signals
Output screw mount connectors
max. 10 output signals
Auxiliary output screw mount connectors
OPTION:
Acryl protection glass cover

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Auxiliary output screw mount connectors
Installation and interconnecting
Caution:
Chassis
Ground
0V +250Vdc
Power
Supply
RESET +250Vdc
Remote
Reset
LED +250Vdc
Remote
LED Test
+ 5Vdc
Power
Monitoring
+ 5Vdc
Power
Failure
Remote
Signal
Rack
Lamp
This unit will be in operation under 250 VDC.
Installation and interconnecting have to be made only by
qualified personel.

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Input signal tap
LED
(red)
LED (red)
+5VDC
LED
LED
LED
LED
Reset
LED
Test
Uin = +250VDC
1 Input 45
+250 VDC
+250 VDC
+250 VDC
+250 VDC
Reset-
button
+250 VDC
+ 250VDC
NC
+5VDC
NC
+5VDC
NC
+5VDC
NC
+5VDC
Tripping Matrix - GKV 10x45 621 SK R LDP
+5VDC
Power supply control
LED green „Power“
Power
(LED green)
+5VDC
+5VDC
+250VDC
Group
memory
Relay
Cabinet lamp
Signal lamp
+250 VDC
NC
LED - test
+250VDC
Remote
Reset
10 Output 1
+5VDC
monitoring
+5VDC
failure
Diode Plug (black)
Diode Test LED
O.K. fail
LED Test
Remote
LED Test
LED Reset

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Front View

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Back View

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Side view
10
+250 VDC
+250 VDC

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Specifications
Technical data
Voltage supply UH:
+250 VDC
Range of voltage supply:
+ 88 ... 132 VDC
Superposed AC peak-to-peak voltage:
12% @ rated voltage
6% @ voltage limits
Power consumption:
1 W in standby
3 W max.
Bridging period on auxiliary voltage failure:
50ms to UH250 VDC
Display memory
Number of indication memories / Input:
45
Number of indication memories / Output:
10
Number of group memories:
1
Indication delay time:
5 ms
Alarm contacts
Alarm relays for „ tripping command dispatched”
indication:
2 NO contacts
Switching capacity make/break:
20 VA
Switching voltage:
250 VAC/DC
Permission current:
0,1 A @ 250 VDC
Matrix
Number of columns (inputs):
45
Number of input indication LED:
45
Number of rows (outputs):
10
Number of output indication LED:
10
Diode plugs
GDS 621 ZS/20 sw:
Part. No. 674.212.002.00
Max. reverse voltage :
1000 V
Max. permissible current:
1 A
Current flow direction:
from column (+) to row (-)
Insulation
Specification:
IEC 255-5
Max. voltage (input, output):
2,8 kV (eff.), 50 Hz
Max. over voltage:
5 kV (peak), 1,2/50 μs, 0,5 J, 3 positive
and 3 negative pulse within 5 sec. each
Climate conditions
Operation temperature:
-5 °C to +55 °C
Storage temperature:
-25 °C to +55 °C
Construction
Mechanical dimensions:
19“, 6RU W/H/D = 483 x 266 x 160mm
Weight:
approx. 8 kg
Connectors
Clamp-connectors:
max. wire diameter 4 mm²