Power Controllers Dealers in Ahmedabad

Thyristor Power Controller Multidrive 2PH up to 2700A 3 wire / 24Vac to 690Vac Supply / 4-20mA or 0-10V DC linear inputs, 10K Pot or RS485 Comms input / Burst Firing, Delayed Triggering + Burst Firing. Ideal for: normal resistive & transformer coupled with normal resistive load types    Multidrive is a fully digital and universal Thyristor Power Controller designed to drive 2 legs of 3 phase resistive & transformer load types. Available in 19 Amp sizes from 45A to 2700A the Multidrive provides the user with optimum control of the process and ease of set-up & maintenance. The Front panel keypad & display allows total flexibility for the user with full configuration of the process & digital inputs types and firing & control modes, to suit the application. Real time values such as the Voltage, Current & Power can be read from the display. Internal quick-blow fuses as standard provide complete protection for the thyristor. Additional features such as current limit, profiling, heater break alarm and RS485 comms come as standard. Overview: Thyristors suitable for normal resistance & transformer coupled with normal resistive loads Current range - 45A, 75A, 100A, 125A, 150A, 225A, 275A, 400A, 450A, 500A, 600A, 850A, 1000A, 1400A, 1500A, 1850A, 2000A, 2400A, 2700A Supply voltage up to 480V as standard, 600V & 690V available as option Microprocessor based electronic circuit fully isolated from the power Firing types include Burst Firing (BF), Delayed Triggering + Burst Firing (DT+BF) Input signals from 4-20mA, 0-10V DC Linear input, 10K Pot or RS485 comms Selectable control modes include V, VxI and external feedback selection Current limit as standard including internal current transformer, fully adjustable via front panel keypad Profiling of current limit via analogue input Heater Break (HB) alarm to diagnose partial or total load failure with automatic setting, relay alarm output and front LED indication. 4 configurable Analogue outputs, 4 Relay outputs and 6 Digital inputs as standard Internal quick-blow fuses as standard RS485 comms (Modbus Protocol) as standard Critical Alarms monitor phase loss, rotation and provide Thermal Protection Special design Heatsink with high dissipation value IP20 protectionComplies with CE specification, cUL pending

Memory Stores parameters and data in reliable e2prom memory Input Power Operates reliably under wide input voltage range using in-built SMPS Separate auxilary supply Measurement True RMS Measurement of V,I, VAr of three individual phases and computes cumulative required VArs. Switching Programmable Required KVAr (Lag/lead) Three Switching modes: 1) FIFO 2) Geometric (1:2:2, 1:2:4 etc.) 3) Intelligent In intelligent mode, KVAr requirement is assessed in one scan cycle and all required stages are switched on/off at a time intelligently Suitable for both Contactor Switching and Thyristor switching Settable switching delay from 0.5 seconds to 120 seconds Any stage can be set as permanently ON / permanently OFF / Auto Programmable Parameter Required KVAr, Switching Delay, Maximum Stages, CT Ratio, Minimum Switching KVAr, Under/Over Voltage Limits, Switching Sequence Stage Mode: On/Off/Auto Stage KVAr: KVAr of individual stage independently settable for intelligent switching mode CT Ratio Programmable 1 to 1000 Display 16 x 2 LCD Display Power Factor-3 ph, Phase/ Line Voltages-3 Ph, Line Currents-3ph, KW, KVAs, KVArs (Lag/Lead), Frequency Stage on Indication 16 x 2 LCD Display LED Indications Power On, Load Lag/Lead, Trip Alarms Low Current, Reverse CT Connections Protection Protection of capacitors by automatic disconnection in under/over voltage conditions External Trip N/O input to disable the switching operation from external contact such as thermostat, Auto/Manual toggle etc. Why AutoVARs Displays various electrical parameters to economize on instrumentation cost and also helps in diagnostics No C/K Setting required Communication MODBUS with RS-485 / RS-232 (Optional) Additional Features with AutoVAR+ Real Time Clock In-built Real Time Clock with battery backup Power Analysis Monitoring and logging of various electrical parameters (V, I, PF, KW, KVA, KVAr, of all three phases, Frequency, KWH) at programmed interval on continuous basis Memory storage of upto 2160 records Data can be retrieved on RS-485 port KWH Meter In-built KWH Meter of class 1.0 accuracy z ERDA Tested Additional Features with AutoVAR C Capacitor Bank Healthiness Unique TEST MODE to locate 1) Low KVAr Output 2) Imbalance of 3 phase currents due to loose connection, damaged wire, worn out contacts or blown fuse. Measures capacitor currents in all three phases Display and retrivable storage of V,I, KVArs, Frequency for individual stage Specification AutoVar AutoVar + AutoVAR C/C+ Operating Voltage 170-270 Vac, 50 Hz Maximum Power 10 VA Input Current 1 A/5 A (Factory Set) Stage Relay (In case of Contactor switching) 230 Vac / 1 A, N/O Stage Output (In case of Thyristor Switching) 10-30 Vdc / 20 mA Load CT Ratio 1 – 1000 (Programmable) Capacitor CT Ratio NA NA 1-250(programmagle Input Voltage R-Y-B-N Three Phase Load CTs 3 3 3 Capacitor CTs NA NA 3 Minimum KVAr 1 to 100 (Programmable) Required KVAr Setting 0 -200 (Lag/Lead) (Programmable) Number of Stages 8,12,16 Switching Delay 0.5 to 120 Seconds (Programmable) Switching Sequence First In First Out (FIFO) Geometric – 1:2:2: – 1:2:4:4: – 1:2:4:8:8: Intelligent – Facilitates usage of unequal stages with optimized switching time delay Memory NA 2160 Records memory (Available only with”+” Model) Communication NA NA RS 485 with MODBUS (Available only with “+” Model) Operating Temperature 00 to 550 C Maximum Humidity 95 % RH (Non-condensing) Dimension 144mm x 144mm x 125 mm Weight 1300 grams

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