Analogue Inputs; Output Relays; Setting The Relay With A Pc Or Laptop - GE KVGC 202 Technical Manual

KVCG202/EN M/H11
Figure 3:
3.5.3

Analogue inputs

The relay has six analogue inputs, two on the microprocessor board and four on the
auxiliary expansion board. Each is fed via an input transducer, a low pass filter and a
three range scaling amplifier. The analogue signals are sampled eight times per cycle on
each channel as the sampling rate tracks the frequency of the input signal.
The wide setting range provided on the relay enables the relay to operate from either 1A
or 5A current transformers. The following analogue channels are utilised:
Channel
AN0
AN1
AN2
AN3
AN4
AN6
3.5.4

Output relays

Eight programmable output relays are provided on relays. They can be arranged to
operate in response to any, or all, of the available functions by suitably setting the
OUTPUT MASKS. The control functions to which these relays respond are selectable via
the menu system of the relay.
In addition there is a watchdog relay which has one make and one break contact.
Therefore, it can indicate both healthy and failed conditions. As these contacts are
mainly used for alarm purposes, they have a lower rating than the programmable outputs.
The terminal numbers for the output relay contacts are given in the table at the start of
Chapter 3.5.
3.5.5

Setting the relay with a PC or Laptop

Connection to a personal computer (PC), or lap top, via an K-Bus/RS232 interface Type
KITZ 101 or KITZ 102 will enable settings to be changed more easily. Alternatively a KITZ
201 may be incorporated into the scheme which enables a PC or lap top to be directly
connected via the serial port mounted on the front plate. Software is available for the PC
that allow on line setting changes in a more user friendly way, with a whole column of
data being displayed instead of just single cells. Setting files can also be saved to floppy
disc and downloaded to other relays of the same type.
available to enable settings files to be generated off-line, i.e. away from the relays that
can be later down-loaded as necessary.
Example connection of logic inputs
Function
Load Current Input
Tap Position Indication
System Voltage Input - Low Accuracy
External TPI supply
Circulating Current Input
System Voltage Input - High Accuracy
Technical Manual
KVGC202
Relay Terminals
27 and 28
19 and 20
17 and 18
15 and 16
23 & 24 for 1A or
25 & 26 for 5A
17 and 18
There are also programs