GHIELMETTI GKV 10x40 621 SK R K User manual

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Tripping matrix
for
Generator Protection Systems
GKV 10x40 621 SK R K
Part. No. 674.115.226.10
110VDC
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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Tripping matrix for Generator Protection Systems
GKV 10x40 621 SK R K
Part. No. 674.115.226.10
110VDC

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Functional description
The tripping matrix GKV 10x40 621 SK R K 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 10x40 621 SK R K has 40 columns (for 40 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 incoming 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 110VDC 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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Interconnecting the Tripping Matrix
30 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
Input screw mount connectors
max. 40 input signals
Output screw mount connectors
max. 10 output signals
Auxiliary output screw mount connectors
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
open to the right

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Remote Control, Power Supply and Auxiliary Ports
GND 0V +100 Reset +110 +5VDC +5VDC Group Memory Outputs
VDC VDC Monitoring Failure Message Rack Lamp
Remote LED Reset
Input Output Output Output Output

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Optional: Input discontinuity (connecting plug red)
LED
(red)
LED (red)
+5VDC
LED
LED
LED
LED
Reset
LED
Test
Uin = +110VDC
1 Input 40
+110 VDC
+110 VDC
+110 VDC
+110 VDC
+110 VDC
+ 110VDC
NC
+5VDC
NC
+5VDC
NC
+5VDC
NC
+5VDC
Tripping Matrix -GKV 10x40 621 SK R K
+5VDC
Power supply control
LED green „Power“
Power
(LED green)
+5VDC
+5VDC
+110VDC
Group
memory
Relay
Cabinet lamp
Signal lamp
+110 VDC
NC
+110VDC
Remote
Reset
10 Output 1
+5VDC
monitoring
+5VDC
failure
Diode Plug (black)
Diode Test
O.K. fail
LED Test
Remote
LED Test
(optional)
LED Reset

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Front View

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Back View

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Side view

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Technical data
Voltage supply UH: +110 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 UH≥110 VDC
Display memory
Number of indication memories Input 40
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 110 VAC/DC
Permission current 0,1 A @ 110 VDC
Matrix
Number of columns (inputs) 40
Number of input indication LED 40
Number of rows (outputs) 10
Number of output indication LED 10
Diode plugs
Type 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 160 mm
Weight: approx. 8 kg
Connectors
Clamp-connectors max. wire diameter 4 mm²

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