All
the relay are designed using latest numerical technology
and having programmable digital input and outputs
to minimized external contact multiplication electromechanical
relays. All relays are tested for EMI / EMC noise
as per international IEC specifications. The basic
electronics hardware is common for all relays. The
user interface for all relays are similar only protection
logic is different, this make very easy to use. General
features of all relays are as given below:
Features
:
Large
20x4 LCD display
Password
Protection for all setting
Disturbance
Recorder. 50 cycles of actual waveform
of voltage & current (45 pre-fault
& 5 post fault) are captured &
saved in the built-in memory with date
time stamping, for analyzing fault condition
& fault location.
IEC
601870-5-103 or IEC61850 Protocol
Separate
Communication Prot for SCADA (RS485) as
well as Local testing (RS232C)
Very
low burden on CT and PT
Online
display of V,I,Active/Reactive Power,
Primary secondary parameter, Logical /
Physical status etc.
Continuous
monitoring of module's internal hardware
and alarm generation in case of failure
of any critical components.
Facility
to synchronized Relay time with SCADA
network
10
Digital Output contacts for local alarm
Tele-signalling & Control
9
Optically isolated digital status input
for monitoring of status and avoid used
of external relay logic
100
nos of event memory, event such CB close,
Trip, status change, relay pkp etc. All
events are with date and time stamped
up to 1ms
Standard Specifications :
Programmable
Dual Bias Characteristics
Wide
Bias Setting 10% to 50%
Programmable
Pick-up characteristic
Selectable
2nd harmonies restrain 10% to 80%
for Detection of transformer charging
condition
5th
harmonics restrain for CT saturation
condition
Instantaneous
Protection
Software
base Vector group selection
Non
Restrain Time delay backup protection
Breaker
Failure Protection (LBB)
REF Protection
The
relay is designed using modular removable terminal,
having CT sorting arrangement. This make very easy
for removing relay for maintenance and calibration
and testing. Most of the relays are multifunction
and having large numbers of setting.
Curve
C1= For IDMT 10N-3secs. Normal Inverse 1
C2 = For IDMT 10N-1.3secs. Normal Inverse 2
C3 = For IDMT 10N-1.5secs. Very Inverse
C4 = For IDMT 10N-0.8secs. Extremely Inverse
C5 = For IDMT 10N-13.3secs. Long Time Inverse
C6 = For Definite Time.
Ashida
Electronics - Provides high quality
and effective Transformer Protection in India and Capacitor
Protection.For more information on the basics of Capacitor
Protection and transformer protection from www.ashidaelectronics.com
