#ADR141C

#Ashida make #relay in control panel

The #ADR141C is a 3 OC and 1 EF Medium Voltage Protection relay with Instantaneous high set and programmable output design in very compact cabinet. ... Non Communicable Numerical Over current / Earth fault Medium Voltage Protection Relay.

ADR141C is second generation Numerical 3OC
1EF Over Current Relay. It consist all the
necessary protection and monitoring functions
required for Normal feeder. It consist of
1. High Speed Digital DSP Controller
2. Analog Measuring Module
3. Power supply Module
4. Digital Input output module.
The High speed Digital Signal Controller
continuously monitors phase, E/F current along
with different optical isolated status
connections. The high-speed micro-controller
samples these current signals through a A/D
converter. The Digital Signal performs
powerful Numerical Algorithms to find out
RMS of fundamental & harmonic contents of
the current then this value is used for protection
and metering function. All measurement is
tuned to fundamental frequency i.e. 50Hz, thus
relay remain stable during distorted waveform
generated electronics loco-motive. All these
measure values are then used for different
protection function such as IDMT/DMT Over
current protection, Instantaneous Over current
protection, Earth Fault protection, etc. These
measured values are also displayed on large
16 x 2 LCD display for metering purpose. The
DSC also monitors different digital input
through optical isolator and perform some
monitoring function such trip circuit supervision,
and control potential free contact for control CB
and generate ALARM and Tele-signalling.The power supply module is basically DC – DC
converted designed using modern PWM based
Switching mode technique to convert station
battery supply to the 12V and 24Vdc low
voltage supply for relay electronics and control
circuit. It also provides necessary isolation from
station battery. The power supply module is
design using very advance PWM controller
which allow very wide input supply variation i.e.
24V to 230VAC/DC (±20%) covering 24Vdc,
30Vdc, and 110V dc and 220Vdc station battery
requirement.
The relay is having total 4 nos of high intensity
dual LED for easy identification of type of fault
for easy user interface. All LEDs and control
output R1 to R4 are fully programmable via
keypad interface.