GRD130
2
FEATURES
Phase undervoltage protection with IDMTL or
DTL.
Phase overvoltage protection with IDMTL or
DTL.
Zero phase sequence overvoltage (neutral voltage
displacement) protection with IDMTL/DTL.
Negative phase sequence overvoltage protection
with IDMTL or DTL.
Programmable reset characteristics.
Four settings groups.
Configurable binary inputs and outputs.
Circuit breaker condition monitoring.
Trip circuit supervision.
Automatic self-supervision.
Menu-based HMI system.
Configurable LED indication.
Metering and recording functions.
Communications for remote setting and data
download is provided via the RSM (Relay Setting
and Monitoring system.
Front mounted RS232 serial port for local PC
communications.
Rear mounted RS485 or fibre optic serial port
for remote PC communications.
The IEC60870-5-103 protocol is provided for
communication with substation control and
automation systems.
APPLICATION
The GRD130 is a range of fully numeric voltage
protection relays. GRD130 has two models which
differ according to the number of voltage inputs fitted,
see Table 1.
Table 1 - GRD130 Models
Model
Configuration
GRD130-210
2 pole
GRD130-410
4 pole
Both models include multiple, high accuracy, phase
under/overvoltage protection with inverse time and
definite time delay functions. Voltage inputs can be
configured for phase to phase or phase to neutral
operation. Zero sequence overvoltage (neutral voltage
displacement) protection is available for detection of
earth faults in high impedance earthed or isolated
systems. For protection against operation on unbalanced
supply voltages, negative phase sequence overvoltage
protection is also available. The ZPS and NPS
overvoltage protections are available depending on
the model and on the configuration selected, see
Table 2.
GRD130 provides continuous monitoring of internal
circuits and of software. External circuits are also
monitored, by trip circuit supervision and CB condition
monitoring features.
A user-friendly HMI is provided through a backlit LCD,
programmable LEDs, keypad and menu-based operating
system. PC access is also provided, either for local
connection via a front-mounted RS232 port, or for
remote connection via a rear-mounted RS485 or fibre
optic port. The communication system allows the user
to read and modify the relay settings, and to access
data gathered by the relay’s metering and recording
functions.
Data available either via the relay HMI or communications
ports includes the following functions.
Metering
Fault recording
Event recording
Disturbance recording (available via
communications ports)
Table 2 - GRD130 Features
GRD130 -
Model Number
210 410
Configuration
1V
ph-ph
+ V
0
1V
ph-n
+ V
0
2V
ph-ph
3V
ph-n
3V
ph-n
+ V
0
3V
ph-ph
+ V
0
2V
ph-ph
+ V
0
Phase O/V (IDMTL) 59
Phase O/V (DTL) 59
Phase U/V (IDMTL) 27
Phase U/V (DTL) 27
ZPS O/V (IDMTL) 59N
-
ZPS O/V (DTL) 59N
-
NPS O/V (IDMTL) 47
-
NPS O/V (DTL) 47
-
Trip circuit supervision
Self supervision
CB State Monitoring
Trip Counter Alarm
Multiple settings groups
Metering
Fault records
Event records
Disturbance records
Communication
Summary of Contents for GRD130
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