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Technical Articles About MHI
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Three Phase SCR
| ST 9003 is a fully synchronized, true three phase angle thyristor power controller for 3-Wire or 4-Wire resistive, transformer coupled resistive or inductive loads. The output through 3 pairs of SCR's in inverse parallel mode gives synchronized full wave control over all the three phases. Easy to install, this power controller comes with all popular features like soft-start, current-limit and over current trip as standard. Built to work in harsh industrial environments, it is the most cost effective power controller for use in ovens, kilns, furnaces, plastic injecting molding machines, textile machines, extruding machines, environment chambers, molybdenum di-silicide heaters, silicon carbide heaters, IR heaters and many more. | |||||||||
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| Main Features • Advanced hybrid design incorporating logic and analog circuits • Compact, robust construction with copper bus-bars. • Bulkhead mounting for easy installation • Self synchronizing • Isolated heat sink, shrouded electronics meeting CE norms for added safety • Phase angle control • Field adjustable current limit and current trip • Field adjustable soft start • Semi-conductor fuse, MOV, Snubber circuit protections ¥ Line to load regulation • High PIV rated SCRÕs • Standard models and customization ( factory configured for your application ) Configurable inputs • Comprehensive operating, installation and trouble shooting manual • Unbeatable price and delivery •One year warranty Applications • Control of complex heaters such as Molybdenum di-silicide, Tungsten, Silicon carbide, Quartz lamps, Infra-red heaters etc. • Ovens, kilns, autoclaves, furnaces, lighting etc. |
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| Environment
Storage Temperature: 10°C to 60°C Operating Temperature: 10°C to 50°C Inputs Control Signal Analog current: 4 to 20ma Manual: Through external 10K pot Driver Supply: 110 / 208 / 220 / 240 / 415 / 440 Vac @ 50 / 60 Hz Firing Mode: Phase Angle Output Current Ratings: 25 / 50 / 75 / 100 / 125 / 150 / 200 / 250 / 300 Amps Load Type: Resistive / inductive / capasitive Soft Start: Adjustable soft start between 10 ms to 60 sec Current Limit: Adjustable current limit between 10% and 100% Regulation : 3% output regulation with 12% supply variation Voltages: 110 / 208 / 220 / 240 / 415 / 440 Vac @50 / 60 Hz Ambient Temperature: Rated capacity at 0 to 50°C, derate by 10% for every 5°C rise up to 60°C. De-rate by 1% / 100 Mts. (3000 ft) above sea level Cooling: Fan cooled, electrically Isolated heat sink Standard: I2t fuse, adjustable soft-start, adjustable current limit. Mechanical: Typical Dimensions for units up to 50 amps H 420mm(16.5") X W 220mm(8.6") X D 225mm(8.8") Weight : Approximately 11.5 Kgs (25 lbs.) |
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Contact MHI to Order SCRs:
(Ph) 513-772-0404 (Fax) 513-672-3333
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