EMERSON 7400M PDF

Liebert Series Uninterruptible Power System (UPS) for the Single Module The Series UPS has been designed for Commercial/Industrial use only. Single Phase UPS system S i n g l e m o d u l e a n d ‘1 + N’ (e x p a n d a b l e) UNINTERRUPTIBLEPOWERSYSTEM User Manual EMERSON Network Power. Single phase ups system • Read online or download PDF • Emerson User Manual.

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Each of the alarm initiates an audible alarm warning.

Chapter 5 – Maintenance Chapter 5 – Maintenance 5. Under normal circumstances both modules are operational and share the load current equally; but if one module develops a fault, or is shut down, the second module is able to take over the full load demand and continue to provide it with processed, backed-up power.

Post ads for free. A DIP switch fitted to the display microprocessor board enables the displayed language to be easily selected to English, French, Emmerson, Spanish or German. Switch S1 Vo – Output volts: Open the Battery circuit breaker and the Rectifier input power switch Q1.

Liebert – Emerson Series Ups System – Energetic Sales & Services, Dehradun | ID:

LS5 should extinguish at the same time as LS6 illuminates. Its purpose it to enable the critical load to be powered from the mains bypass supply while the UPS is shut down for maintenance or troubleshooting. This will contain following items: Receive the latest offers by email. The series UPS incorporates an optional automatic emerzon charge facility which can be used in systems containing non-sealed lead-acid batteries.

Distribution Boxes Their design Is identical, they differ only for the rating of switches and DC current transformers. In a Non-Redundant Module emfrson LS6 will not illuminate on the first module to be started until you reach this point in starting the second module.

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ENP is not responsible for supply of these interconnection cables in case the recommended Line up is altered.

This indicates that RAM is ready for operation. If these are significantly different from the values previously logged then, if possible, record the size, type and location of any additional load connected to the UPS supply since the previous inspection.

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Check that all printed circuit board connectors are secure. Cables and Connections – Check cables for chaffing, fraying or signs of overheating.

Close the input isolator immediately the DC busbar voltage falls to V note that at V the battery circuit breaker will trip and the load will transfer to bypass. This type of information could prove useful to the troubleshooting engineer should a problem occur. Also PCB door is fixed with z-type clamps which should be removed. For detailed info visit us at emfrson. Modern generators can be started and brought on-line very quickly and where such a facility is incorporated into the UPS installation it results in short battery discharge periods and correspondingly rapid recharge times.

There are two LEDs contained within the switch panel area: In order to provide a better service we would like to know what do you think about our website:. The UPS has its own internal voltage and frequency regulator circuits which ensure that its output is maintained within close tolerances independent of voltage and frequency variations on the mains power lines. Remove any packaging devices debris then visually examine the UPS and battery equipment for transit damage, both internally and externally.

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LED Indications Figure The batteries are connected to the UPS through a circuit breaker which is manually closed and electronically tripped via the UPS control circuitry. Once again, the voltage supplied to these terminals must be generated by an external power source and not taken from the UPS internal low voltage supplies.

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As the outputs from both UPS modules are connected together to provide a single load supply, it is imperative that the inverters are fully synchronised both in frequency and phase.

These precautions should be followed implicitly at all times. Thoroughly clean inside the equipment enclosure using a vacuum cleaner and low pressure air to remove any foreign debris. Such a condition can arise if a module develops an internal power fault or if for some reason the two modules become unbalanced, and is liable to further damage the module and also degrade the load supply.

Do not under any circumstances make internal circuit adjustments or interfere with the circuit boards in any other way. This equipment electrical codes. Chapter 5 – Maintenance 5. Critical load power is maintained under these conditions until the battery is fully discharged, whereupon the UPS shuts down.

Measure and record the battery float charge voltage. If you already own and use a Liebert, we are doubly honoured by your decision of continuing this relationship.