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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When using mains-powered test equipment such as oscilloscopes in the UPS high voltage area, always use a differential mode of operation to avoid the need to disconnect the oscilloscope frame earth.

Measure and record the battery charge current. Under no circumstances should the UPS internal low voltage supplies be used for this purpose.

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

The battery circuit breaker will open automatically if the dc voltage falls below this level. In a Non-Redundant module system LS6 will not illuminate on the first module to be started wmerson you reach this point in starting the second module.

Inverter will not turn ON unless output isolator is closed. Post ads for free Login Register How to partner with Clasf.

This led illuminates when the output isolator is closed and the load is connected to the inverter via the static switch. It is presumed that a b c d All the panels are in single line up.

Printed circuit boards – Check the cleanliness and integrity of the circuit boards and replace if any signs of deterioration are found.


That is, both modules will provide load power through their paralleled bypass lines. USF, 24 core, 1. As a safety precaution, remove the battery fuse in the UPS before making the battery circuit breaker power connections.

Isolate the UPS input supply from the mains distribution panel to make the UPS safe for work to be carried out internally.

Three Phase Emerson 60 KVA Hardly Used UPS, 7400M

Cable connections for kVA, V, 1 Ph. It also disables the rectifier and inverter, and trips the battery circuit breaker.

Scheduled maintenance requirements, beyond ensuring that the environmental conditions remain suitably cool and clean, are therefore minimal.

The inter-module parallel control responsibilities are complex but can emdrson summarised as follows: The following information aims to provide a trained user with sufficient knowledge to understand the nature of a fault through the correct interpretation of the accompanying alarms and indications, and to carry out any necessary first aid repair action.

This is required to be connected to M3: 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.

When shutting down the second module, the static bypass lines of both modules will be turned on as soon as its inverter is stopped. If this type of battery is used in your installation you may notice that the battery charger voltage will be fmerson than its nominal Vdc when the mains supply returns from a prolonged outage.

Emerson 7400m series

The cable connection details for the same are given in figures 15 — Page 41 UPS using the most direct route possible Emerson Network Power offer a purpose-designed remote battery circuit breaker box, containing the circuit breaker and its necessary control board, as a standard option kit. Post ads for free.


However, as the load is transferred to the static bypass, the second module should be turned OFF also. Wmerson a Redundant Module system LS5 will not illuminate on the second module to be started as its static bypass line is inhibited. We want your opinion. Receive the latest offers by email.


Inverter will not turn ON configuration at this stage. The manufacturer offers customer training, at a nominal fee, if required. The inverter synchronisation inhibit feature is most often used if the UPS is powered from a standby generator when the input mains supply fails and the generator frequency is unstable. When the equipment is located on a raised floor, and bottom cable entry is used, additional cooling air also enters the UPS via the floor emsrson.

Start the UPS and transfer the load to the inverter following the appropriate operating procedure.

If you have any doubts concerning safety or the method carrying out any procedure then contact an approved service agent for assistance or advice. Measure and record the UPS output voltage on all three phases.