#ADR141C скачать в хорошем качестве

#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.