Helios Power Solutions No-Break ™ DC UPS technology represents a truly unique, comprehensive approach to providing uninterruptible and secure DC power when you need it.
No-Break ™ DC UPS systems maximise the integrity of standby battery installations, whilst optimising the life and availability of back up batteries. They are now available with Serial and Ethernet Communications options.
The No-Break ™ system is the ideal solution for:
|Model||Output (V)||PSU Rated (A)||Power (W)|
|Input||180V – 264VAC|
|Fusing||5A input fuse and varistor|
Battery fuse plus ECB for battery circuit
|Overcurrent protection||Constant current limit under overload and short circuit conditions|
|Isolation||1KV DC input – output / earth|
|Voltage adj. range||85 – 105% of Vout|
|Temp. compensation||Temperature sensor on 1.7m lead with adhesive pad: -4mV / °C / cell ±10%|
|Hold-up time||20 ms without battery (nominal – max. Vin)|
|Alarms||Mains fail (or PSU in standby mode)|
|Battery System OK – alarms when battery voltage low (on mains fail) , battery missing, battery circuit wiring faulty, BCT fail (if enabled)|
|Alarm relay contacts||C – NO – NC full changeover rated 1A /50V DC, 32VAC|
|AC Input Connector||IEC320 inlet socket|
|DC connections||M8 brass stud or plug-in/ screw terminal block|
|Alarm connections||Plug in screw terminal block|
|Dimensions||225W x 304D x 70H mm (excluding mounting feet and terminals)|
Our No-Break ™ DC chargers have been designed for industrial use and have over twenty years of proven reliable operations. In addition, the chargers have many outstanding features such as fault alarms, LED fault alarm codes, battery detection, low voltage disconnect circuitry, automatic battery condition testing, communication options and can be connected to the battery permanently due to the precise temperature-compensated voltage control.
The No-Break ™ DC UPS has many features which a normal float charger does not, these including:
Normally it is not necessary to have a boost on the No-Break ™ unit, as the power is on the system continuously and it is not that critical to restoring 100% of charge rapidly, as in the case of cyclic applications. A boost charge voltage may damage the equipment which is permanently connected to a standby system.
No, the No-Break ™DC UPS is designed to operate with a battery connected and instability may result if there is no battery connected. If you wanted to do this then it is advisable to use a standard two-terminal DC power supply SR500L
This is done to implement two of the features of the No-Break ™ UPS/charger. There is an “electronic circuit breaker” fitted between the battery negative and load negative terminals to provide the battery overcurrent protection. The separate battery circuit also allows for independent control of the charging current when required.
No, it would nullify all the features of using the No-Break ™DC design and provide false alarm signals from the relays. If you wanted to do this, then it is advisable to use a standard two-terminal float charger, with or without alarms.
At approximately 1.67 volts per 2V (nominal) cell, so for a 12V system the disconnect voltage is set at 10V.