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Table of Contents
Summary of Contents for Helios SR250C
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Page 1: User Manual
DC UPS SR250C SR500C / SR750C (with optional V/I meter shown) REFER TO BACK PAGE FOR CUSTOMISED MODELS 15/09/2016 Helios Power Solutions - Auckland: +64 9 8350700 - Sydney: +61 2 9809 5022 - Singapore: +65 6871 4140 - www.heliosps.com... - Page 2 Safety The user is responsible for ensuring that input and output wiring segregation complies with local standards and that in the use of the equipment, access is confined to operators and service personnel. A low resistance earth connection is essential to ensure safety and additionally, satisfactory EMI suppression (see below). HAZARDOUS VOLTAGES EXIST WITHIN A POWER SUPPLY ENCLOSURE AND ANY REPAIRS MUST BE CARRIED OUT BY A QUALIFIED SERVICEPERSON.
- Page 3 The No-Break™ DC power supply is designed to provide DC power and charge lead acid batteries for critical back up applications. No-Break™ DC systems ensure maximum uptime of the system, and life of the battery, by providing: Accurately regulated output voltage ♦...
- Page 4 #1. 1 x No-Break™DC charger and 1 x battery bank #2. Peak load connection using 1 x No-Break™DC charger This is the basic connection which is most commonly used, and provides Use this connection when there is a connected load with a peak current adequate protection for the majority of systems requiring DC back up in likely to exceed 1.5 times the rated current of the charger.
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Page 5: Connection Procedure
CONNECTION PROCEDURE Check input and output voltages of system, ensure that they match the equipment. Connect battery /batteries to + and - terminals. Although there is built in reverse BATTERY BATTERY polarity protection, under some circumstances reverse polarity connection will not only result in the rupture of the internal battery protection fuse but destroy the input circuitry of the unit. - Page 6 Parameter Default Settings Special Setting V nominal V output (20°C) 13.8 27.6 34.5 41.4 55.2 BatDetect (mins) 12.2 24.4 30.5 36.6 48.8 Vpres 27.5 Vbatl * Vshutd: 11.5 28.7 34.5 Vdisco: Bccl (%) Comms BCTim (mins) Time between BCT (days) CC Mins: CC Hrs: CC Days:...
- Page 7 LED FLASH CODES Battery Power Battery Power OK Power OK Condition System OK Stand-by System Alarm OK Alarm Normal Normal System Normal: Input power on, battery circuit is OK Normal Normal Battery detection in progress Input power on, battery system fault: Alarm Normal Internal battery fuse has opened or...
- Page 8 OPERATION OF ELECTRONIC CIRCUIT BREAKER (ECB) FOR PROTECTION OF CHARGER & BATTERY WIRING Max. allowable Max. allowable INPUT POWER ON INPUT POWER OFF load amps load amps (x I rated) (x I rated) Short circuit condition, Short circuit condition, ECB trips within 2ms ECB trips within 2ms 7x I rated...
- Page 9 This page is intentionally blank Specifications are subject to change without notice. No liability accepted for errors or omissions.
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Page 10: Specifications
incl. SR250 High performance DC UPS system No-Break switching between charger & battery Battery detection - regular battery presence and battery circuit integrity checks Alarm relay outputs LED flash codes for precise state indication Deep discharge protection for batteries ECB for battery overload & short circuit protection Fused reverse battery polarity protection Automatic temperature compensated output volts Option - battery condition test (BCT) - Page 11 Dual charger (front removable) add: SCHEMATIC BLOCK DIAGRAM SR-RM2U-DUALV2 Wall Mount Enclosure Charger may be fitted into enclosure with MCBs and terminals. Code: SEC-SR 2 x SR250C/i chargers (front removable) in 2U rack MODEL IDENTIFICATION CODES For SR250 versions: Optional Communications 485 = RS485...
- Page 12 incl. SR500 High performance DC UPS system No-Break switching between charger & battery Battery detection - regular battery presence and battery circuit integrity checks Alarm relay outputs LED flash codes for precise state indication Deep discharge protection for batteries ECB for battery overload & short circuit protection Fused reverse battery polarity protection Automatic temperature compensated output volts Optional internal V/I...
- Page 13 500 Watt No-Break™ DC charger for lead acid batteries incl. SR500 STANDARD MODEL TABLE *1 This is the default setting. Please specify if a lower limit is required at time of order DC Output MODELS PSU Rated Charge Recomm. Peak load on Output (V) Limit (A) * Load (A)
- Page 14 incl. SR750 High performance DC UPS system No-Break switching between charger & battery Battery detection - regular battery presence and battery circuit integrity checks Alarm relay outputs LED flash codes for precise state indication Deep discharge protection for batteries ECB for battery overload & short circuit protection Fused reverse battery polarity protection Automatic temperature compensated output volts Optional internal V/I...
- Page 15 750 Watt No-Break™ DC charger for lead acid batteries incl. SR750 STANDARD MODEL TABLE *1 This is the default setting. Please specify DC Output if a lower limit is required at time of order MODELS PSU Rated Charge Recomm. Peak load on Output (V) Limit (A) * Load (A)
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Page 16: Special Features
Liability under this warranty is limited to the replacement or repair of the defective product as long as the prod- uct has not been damaged through misapplication, negligence, or unauthorized modification or repair. Helios Power Solutions - Auckland: +64 9 8350700 - Sydney: +61 2 9809 5022 - Singapore: +65 6871 4140 - www.heliosps.com...