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| | | ys6375 18th October 2004 catalogue section 40 | | |
| | | SM82 Automatic Battery Chargers | | |
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| | | ■ High rate, fully automatic float charging: 5A/12V or 3A/24V ■ Compact, lightweight design ■ Low ripple output, suitable for lead acid, Ni-Cd or VRLA cells ■ Float and boost modes ■ On charge & charge fail outputs Product specification | | |
| | | Description The SM82 is a fully automatic industrial battery charger / power supply that may be used in a wide range of industrial applications. Switch mode power supply technology provides a compact, lightweight design with high power efficiency and low heat dissipation. Fast, accurate and smooth charging ensures optimum battery life and reliability. The SM82 is intended for continuous float charging and standby battery applications, including standby engines, pumps and generators. The DC output gives rapid charging at maximum current until the battery reaches a 'knee point' voltage (13 VDC for 12V lead acid). The output then ramps down to its float voltage, maintaining optimum battery charge and supporting static loads up to the maximum rated current- | | |
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| | | | | | | | | | | | | | | | | | | | power supply: | | | SM82125 | | | SM82243 | | | | | | operating voltage range | | | 195 - 277 VAC (240V setting) | | | | | | | | | | 95 - 135 VAC (110V setting) | | | | | | operating frequency range | | | | | 47 - | 400 Hz. | | | | | | DC charge output: | | | | | | | maximum current, A DC | | | 5 | | | 3 | | | | | | nominal voltage, V DC | | | 12 | | | 24 | | | | | | float/boost voltages | | | see table overleaf | | | | | | line regulation | | | < 1% | | | | | | load regulation | | | < 1% | | | | | | output ripple | | | < 1% | | | | | | charge fail output: | | | | | | | configuration | | | switched negative relay contacts: | | | | | | | | | NC (-ve DC during fault / power down) | | | | | | | | | NO (-ve DC during normal operation) | | | | | | contact rating | | | 1A @ 30 VDC (resistive load) | | | | | | general: | | | | | | | operating temperature | | | -10 to +55 oC | | | | | | overall dimensions (w x h x d) | | | 133 x 130 x 70 mm | | | | | | | | | | (see diagram overleaf) | | | | | | weight | | | approx. 0.56 Kg (1.24 lbs) | | | | | | Electromagnetic Compatibility | | | 89/336/EEC | | | | | | Low Voltage Directive | | | 73/23/EEC | | | | | | | | | | | | | | | | | | | |
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| | | Charge current vs voltage (12V lead acid) | | |
| | | Once the battery is charged, the charger output reduces to cover natural battery losses (approx. 1mA per AH rating), plus any standing loads. | | |
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| | | 5A | | |
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| | | 13.0 13.6 voltage, VDC—► | | |
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| | | The SM82 output has very low ripple (< 1%), allowing safe use with vented lead acid, VRLA, Plante or Nicd batteries. A 'boost' mode provides an increased voltage output where required. Boost mode is selected by linking two terminals, typically via a remote panel switch or time relay - see calibration table overleaf for details of float and boost voltages. Two (switched negative relay) outputs are fitted for remote signalling of 'on charge' and 'charge fail' conditions. The chargers have an open circuit board construction, designed for surface mounting in an enclosed panel. Electrical connection is via 6mm blade terminals. The SM82 is supplied for use with 195 to 277 VAC nominal industrial power supplies, but a moveable circuit board link allows operation with 95 to 135 VAC supplies. | | |
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| | | Warranty A one year limited warranty on materials and workmanship is given with this Murphy product. Details are available on request and at www.fwmurphy.co.uk/warranty. | | |
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