GHIELMETTI GKV 20x60 621 AM ELDP User manual

Tripping Matrix
GKV 20x60 621 AM EALDP
•Matrix for 60 input to 20 output signals
•Input- and Output signalling by LED indication
•Storing of LED indication by solid state memory
•Power supply 250 VDC +/- 20%
•19”, 6U rack

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Description
GKV 20x60 621 AM EALDP
Tripping Matrix
Part. No. 674.115.420.15
Introduction
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 op-
eration we kindly ask you to read this manual and act ac-
cording 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 pur-
chase against defects in materials and workmanship. During
the warranty period, Ghielmetti will, at its option, either re-
pair or replace products that prove to be defective. The war-
ranty does not cover any defects caused by accident, misuse,
neglect, improper or inadequate installation or maintenance
by buyer, buyer-supplied software or interfacing, unauthor-
ized 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.
Safety Earth Ground
This is a Safety Class 1 product (a protective earth terminal 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 in-
structions provided in this manual.
Servicing
Servicing, adjustments, maintenance or repair of this product
may be performed by qualified personnel only.
Caution:This unit will be in operation under 250 VDC.
Installation and interconnecting have to be made only by
qualified personel.
Functional description
The tripping matrix GKV 20x60 621 AM EALDP is a compo-
nent of a generator protection system. The tripping matrix
provides a transparent, easily programmable facility for com-
bining output commands of the trip outputs of individual
protection devices with plant items such as the circuit-break-
ers, de-excitation etc. The matrix was developed for marshal-
ling 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 soft-
ware matrix incorporated in each generator protection unit
is used for marshalling the tripping commands, the marshal-
ling in the protection units must be changed for this pur-
pose.
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.

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Mode of Operation
The tripping matrix GKV 20x60 621 AM EALDP has 60 col-
umns (for 60 signals from protection units) and 20 rows (for
20 signals to tripping modules)
High reliability diode plugs (black handle) are used for pro-
gramming the matrix, the reliability being attained by gen-
erous over-rating with respect to forward current and re-
verse 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.
Withdrawing a central red connecting plug can disconnect
all tripping channels of a column. Each input tripping signal
may be connected to a parallel tap by inserting a red con-
necting plug.
Each column has a LED for indicating tripping commands.
The display is stored.
Each additional incoming tripping command received addi-
tionally sets a group memory, which, can be used for remote
signalling and switching a rack 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.
A lockable acryl-cover inhibits unauthorised access to the
programming matrix.
Unused diodes and connecting plugs are stored in a pin
park.
Input discontinuity
By plugging in a connecting plug the
input signal is connected to the Pro-
gramming Matrix
Connecting Plug:
Type: GSS 621/15 rt 674.310.180.02
60 Input signals
from protection system
LED indicating incoming switch-
ing pulse
20 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
2 rows by 60
pin parks each
Reset
Of all LEDs
LED-Test
To test if all
LEDs work
Power ON
indication LED
Diode Plug Test Unit
Type: GDS 621 ZS/20 sw
674.212.002.00
If the LEDs ligh after inserting
into the left position
and do not ligh after inserting in
the right position,
then the diode plug is o.k.
Acryl class cover
open to the right
20 Output discontinuities
GSS 621/15 rt
674.310.180.02

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Interconnecting the Tripping Matrix
Auxiliary screw mount connectors
Connecting and Diode Plugs
Input screw mount connectors
max. 60 input signals
Output screw mount connectors
max. 20 output signals
Auxiliary output screw mount connectors

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Block Diagram

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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= +250 VDC
+250 VDC
Range of voltage supply:
+176 ... 288 VDC
Superposed AC peak-to-peak voltage:
≤12% @ rated voltage
≤6% @ voltage limits
Power consumption:
1 W in standby
6 W max.
Bridging period on auxiliary voltage failure:
≥50ms to UH≥250 VDC
Display memory
Number of indication memories input
60
Number of indication memories output
20
Number of group memories
1
Indication delay time
≥5 ms
Alarm contacts
Alarm relays for «tripping command dis-
patched» 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)
60
Number of input taps
60
Number of input indication LED
60
Number of rows (outputs)
20
Number of output discontinuities
20
Number of output indication LED
20
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 kVeff, 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“, 6U
W/H/D = 482,6 x 266.3 x
154,58 mm
Weight:
approx. 7 kg
Connectors
Clamp-connectors
max. wire section 2,5 mm²

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