DC SYSTEMS. Rectifier Units

Transcription

1 Rectifier Units Chloride Batteries S.E. Asia Pte Ltd 106 Neythal Road, Jurong Town, Singapore T (65) F (65) E salesdesk@cbsea.com.sg W /

2 CHARGING AHEAD Chloride DC Chargers are being used in various power plants and substations across the region like Singapore Power Grid and CLP, Hongkong for over three decades. ABOUT CEIL The competitive world today is borderless. Major industries of the world require speed and agility to ensure business sustainability; downtime is simply no excuse. These same driving forces have led to the inception of CEIL Trusted Battery Systems. CEIL is designed to drive principal economic sectors globally. This is achieved by developing products in tandem with innovative technology and creating contemporary methods of utilising energy in mobility. 01 PRONTOFORZ CEIL is no commonplace battery. It is designed to be Tougher & Hassle-Free. These brand values are born out of the same values of CBSEA and EXIDE Industries Ltd (EIL); CEIL s proud parents, trusted for their advancement in battery technology. CEIL s parentage reflects strength and technological advancement which ensure that CEIL provides a reliable flow of constant energy. CEIL thrives on being the unrivalled choice as a battery systems brand. CEIL will enable your business to be more reliable. This hassle-free reliability will enhance your operational efficiency. By hassle-free, we mean focusing on making your processes free of downtime. You will experience this in our products, process and people. Your needs remain at the center of everything we do at CEIL, and the dynamics of our customers trends will lead us to focus on innovative delivery. Within each CEIL Traction battery system, Uninterrupted Standby Power System and Automotive Battery, CEIL is designed to deliver a complete system allowing you to stay reliable and efficient. This is the Trusted value of CEIL. PRONTOFORZ 02

3 Solid State Thyristor Module Freewheeling Diode THE INSIDE STORY Preventing accidental reverse polarity from the battery connection to the Thyristor. Certified under IEC to 15; IEC & Din EN Rectifier A Brief History In 1833, Michael Faraday s experimental work in chemistry, which included the discovery of benzene led him to the first documented observation of a material that we now call a Semiconductor. In 1874, a German physicist by the name of Ferdinand Braun discovered the rectification effect after he observed that current flows freely only in one direction at the point of contact between metals and a certain crystal material. He demonstrated this to an audience with a certain semiconductor device, which we now call a Diode Capacitor A high class Switching device which convert AC power to DC power through the control of Chloride Controller Card. Certified under IEC to 15; IEC & Din EN Dropping Diode Reduces the DC output voltage to the load voltage tolerance level. Certified under IEC to 15; IEC & Din EN Charger Input Breaker AC Input MCB meant for the protection of the charger input equipment from any inrush current or surges from the Mains during Power On. Certified under IEC : 10KA Working together with the choke to form a L-C filtering circuit to reduce noise on the DC output line. Certified under JIS C Charger Controller Card The heart of the charger operation, which control the firing circuit of the Thyristors, the Float & Boost voltage settings, Alarm settings, Current Limit setting, Alarm Monitoring, etc. In 1904, a British physicist, John Ambrose Fleming invented the first practical rectifier/diode used in a radio. In 1906, Wireless Specialty Apparatus Company found by Greenleaf W. Pickard was probably the first company to make and sell silicon semiconductor devices to the market Through the years of development, and the discovery of p-n junction, the Solid State Rectifier was developed and manufactured by a subsidiary company of Westinghouse in 1948 Today, the development of the DC charger using the Solid State Technology is still flourishing, mainly due to the fact that it is robust, reliable, insensitive to the high ambient temperature, easy to maintain, and cost effective. External Alarm Cards Battery / Load Breaker Additional dry contact alarm card mean for individual alarm monitoring. MCCB breaker for Battery protection. Certified under IEC : 10KA Chloride s history with the DC Chargers started in the early 1970s in the UK, and in 1982, a DC Charger manufacturing plant was set up in CBSEA, Singapore. Today, CBSEA s Chloride DC charger has established itself in the region and with the reliability record to be proud of. This stems from the fact that we never compromise on quality, and use only IEC certified components to give the charger the edge, and longevity in service life. Choke Working together with the Capacitors to form a L-C filtering circuit to reduce noise along the DC output line. Certified under IEC Main Transformer 03 PRONTOFORZ 3-phase transformer for stepping down the input voltage to the charger rating nominal voltage. Certified under IEC PRONTOFORZ 04

4 TECHNICALITIES SOFT START Soft Start feature that is built within the Controller Card helps to prevent the inrush current or voltage transient from blowing the DC fuses or burn any component that is directly in its path when the mains is switched On. charge fail alarm TOLERANCE Boost and Float charge voltages and output currents are set at the recommended levels according to battery specification. VOLTAGE REGULATION Adjustment controls, mounted on charger, prevent unauthorized interference. Float and Boost voltages held at preset level +/- 1%, at the battery terminal allows simultaneous changes in mains input voltage of +/- 5% to 10% and load variations 0% to 100% (24 volts systems and above). CURRENT REGULATION Output current held at preset level +/- 0.5%, allows simultaneous changes in the mains input voltage of +5% to -10% and battery voltage variations from 50% to 100% of boost charge level. CHARGER AMMETER and voltmeter Industrial Grade with 1% to 2.5% accuracy. Core magnet with self-shielding movement. The instruments are : i) Charger Output Current ii) Battery Voltage indicators Individual light emitting diode (L.E.D) lamps provide indications: For Function Monitors : A.C. input Boost charge Float charge For Fault Monitors : Charge Fail Low Volts High Volts Low Electrolyte Earth Fault Mains Fail etc. Option for provisions of remote individual or common fault indicators via voltage-free changeover contacts on a relay fitted to the control of the charger are available. 05 PRONTOFORZ Charge fail alarm circuit is designed to operate only when there is no current flow to battery and battery voltage is below 90% of preset Float level. low electrolyte alarm The Low Electrolyte alarm circuit is designed to operate when the battery electrolyte falls to the minimum level prescribed by the battery manufacturer. The inserted low electrolyte sensing probe place in the battery will sense an open circuit when the battery electrolyte looses contact with the probe at its minimum level, thus, triggering an alarm. transformer The transformer is a leakage reactance, double wound, & varnish, and comply to IEC standard. Temperature class F electro-static earth shield between primary and secondary control windings. Impedance : 1-phase typically at 25% and 3-phase typically at 10%. rectifier Thyristor rectifier assembly is heat-sink mounted and derated by 50% at full load output. smoothing i) Single-phase Units Ripple voltage at 2% r.m.s. average at full load Ripple current less than 2% ii) Three-phase Units Ripple voltage at 1% r.m.s. average at full load Ripple current less than 2% PRONTOFORZ 06

5 SPECIFICATIONS three-phase chargers TYPICAL THREE-PHASE SCHEMATIC CHargers INPUT CHARGER WITHOUT BATTERY The charger is suitable for operation by a 380 to 440 volt +5% to -10%, 50 Hz/60 Hz +/-2%, three phase four wire supply. Cubically-designed and free standing for floor on wallmounting, and fitted with a single-braced door and full length piano-type hinge door with key-lock devices. All instrument controls and indicators are mounted on the door-panel. SMOOTHING Ripple voltage is limited to 1% RMS average at full load. The alternating current components in the battery circuit Is limited to less than 2%. PROTECTION The following protective devices are provided: Triple pole thermal magnetic circuit breaker in the charger AC input lines. HRC fused wire in DC positive/negative output lines between the rectifier and the battery. Surge suppression for protection against AC line voltage transients. Solid state current limiting to limit output to 100% of full load and provides protection even in short circuit conditions. Phase sequence protection relay interlocks with the control circuit. Resistor/capacitor network connected in parallel with each thyristor. 07 PRONTOFORZ CUBICLE Cubicles are manufactured from folded and welded electrogalvanized steel sheet greater than 1.2mm in thickness. VENTILATION Drip proof pressed-louvres on both sides of cubicle ensure adequate ventilation. CABLE ENTRY A removable gland plate is provided on the top and bottom panels of each cubicle. FINISHING All spot welds are grounded smooth, and metal work abrasive-cleaned, as well as phosphate cleaned and etched out. The interior and exterior surfaces are protected by application of an electrolyte resistant coating. Standard colours are in beige or light grey. PRONTOFORZ 08

6 TECHNICALITIES TYPICAL TECHNICAL SPECIFICATION MANUFACTURING STANDARDS All chargers are designed and manufactured to in-housed specification which uses components that comply to IEC Standards. Naturally cooled. Meters are 72 x 72 mm or 96 x 96 mm, 90 scale-type with a standard of 2.5% accuracy or option for 1.5% or 1% accuracy. Control and power circuits wiring are >1.5mm sq. Printed circuit connections are by ribbon-cable at 0.9mm sq. Wire marking by ferrules (wire-wire). All main components are accessible through the front-panel door. Main components on front-panel door are identified with black and white labels, engraved with English words. Main components inside the cubicle are also clearly identified. Terminals are positioned at the base or side of cubicle, to provide for easy entry of cables. Engraving labels are provided to describe the function of all controls, instruments, monitoring lamps, and protective devices. Labels will be secured to the charger with double-sided tape. Complying Standards EN EN55011 Class A EN EN ,3,4,5,6,&8 IEC IEC PRONTOFORZ General Industrial Emmission Specific Industrial Equipment Emission General Industrial Immunity Specific Industrial Equipment Immunity Temperature / Humidity Cyclic Test Semiconductor converters General requirements and line commutated converters Part 1-1: Specification of basic requirements Standard Cabinet Colour RAL 7035 / Optional PRONTOFORZ 10