2GHIELMETTI AG | www.ghielmetti.ch | info@ghielmetti.ch | 02/2017
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.
