GE LP 33 3.2 OPERATION MODES

Modifications reserved Page 11/57

OPM_LPS_3UO_30K_40K_0US_V010.doc Operating Manual LP 33 Series 30 & 40 kVA

3.2 OPERATION MODES

This section describes the different possible operation modes of the UPS explaining the function of the

main modules of the UPS.

VFI (Voltage Frequency Independent) Mode operation

Under normal conditions the load is

permanently powered by the inverter with

constant amplitude and frequency.

The rectifier, powered by the mains, supplies the

inverter and the battery-charger keeps the

battery fully charged.

Fig. 3.2-1 Energy flow in VFI Mode operation

The inverter converts the DC voltage in a new AC sine wave voltage with constant amplitude and

frequency independently from the input mains power.

ECO Mode operation (Intelligent Energy Management)

When the ECO Mode is selected, and the mains

power is available, the load is normally powered

through the automatic bypass.

When the mains voltage is detected out of the

prescribed tolerances, the load is automatically

transferred to the inverter.

When the mains recovers, the load returns to

the automatic bypass after a variable time

defined by the control unit.

Fig. 3.2-2 Energy flow in ECO Mode operation

The ECO Mode can be configured directly by the user for higher efficiency, considering the mains

reliability and criticality of the load.

The selection between the two operation modes “VFI Mode and ECO Mode”, or switching between

operation modes at required time, can be done through the UPS control panel (see Section 6.3.1-5).

In case of parallel system

ECO Mode cannot be enabled for RPA Parallel System.

Attention: A single unit equipped with a RPA - Parallel board, must be considered as parallel, thus

disabling ECO Mode.

Contents

Main GE Consumer & Industrial Power Protection Operating Manual Uninterruptible Power supply LP 33 Series 30 & 40 kVA 208 VAC UL / Series 0 Page g Preface Safety instructions Parallel version secured with RPA Table of contents 1 SAFETY RULES THE ONLY CONDITION SAVE THESE INSTRUCTIONS Safety symbols and warnings 2 INTRODUCTION 2.1 GENERAL DESCRIPTION 3 DESCRIPTION 3.1 BLOCK DIAGRAM AND MAIN ELEMENTS DESCRIPTION 3.2 OPERATION MODES Page Page 3.3 RPA PARALLEL SYSTEM 3.4 UPS PARALLELED ON THE SAME BATTERY 3.5 SERVICE AND TECHNICAL SUPPORT g 3.6 RECYCLING AT THE END OF SERVICE LIFE 4 LAYOUT 4.1 LAYOUT LP 33 Series / 30 & 40 kVA 5 SYSTEM HANDLING 5.1 CONTROL PANEL 5.2 COMMAND PUSH BUTTONS AND SWITCHES 6 LCD SCREEN 6.1 METERING SCREENS (Metering) LP 33 40kVA P1 = 70% SERVICE REQUIRED Udcp=215V Udcn=215V Ubp=164V Ubn=164V O Charge Level = 100% Autonomy = 15min Page 6.2 EVENT SCREENS (Alarm) 01.01.2005 12:15:45 NR=255 Status=A588 4580: INVERTER AND MAINS SYNCHRONIZED 6.2.1 Alarms list Page Page 6.2.2 Messages list Page Page 6.2.3 Event report LP 33 Series LP 33 Series Description of repair action taken: Actual situation: Remarks: 6.3 MENU SCREENS (Menu) Page Tel1: Tel1 enabled: N Tel2: Tel2 enabled: N LCD Display UPS NAME: LP 33 Language = ENGLISH ECO Mode Y d1 d2 d3 d4 d5 d6 d7 HOURS SELECTED 24 24 12 12 12 12 12 Page Page 7 OPERATION 7.1 PROCEDURES FOR SINGLE LP 33 Series 7.1.1 Start-up of the LP 33 Series Page 7.1.2 UPS shutdown with load transfer on manual bypass (Q2) Page 7.1.3 Start-up following the operation on manual bypass (Q2) 7.1.4 Complete shutdown U2= 7V U3= 7V Frequency = 60.0Hz Synchronized 7.1.5 Restore to normal operation after total off 7.1.6 Restore to normal operation after EPO Emergency Power Off NR=255 Status=A588 4563: 7.2 PROCEDURES FOR PARALLEL SYSTEM LP 33 Series 7.2.1 Parallel System start-up of the LP 33 Series 7.2.2 Parallel UPS shutdown with load transfer on manual bypass (Q2) U2= 7V U3= 7V Frequency = 60.0Hz Synchronized 7.2.3 Start-up following the operation on maintenance bypass (Q2) any one of the units 7.2.4 Shutdown of a single unit in a parallel system 7.2.5 Start-up an additional unit in a parallel system 7.2.6 Complete shutdown of a parallel system 7.2.7 Restore to normal operation after total off 7.2.8 Restore to normal operation after EPO Emergency Power Off NR=255 Status=A588 4563: 8 OPTIONS 8.1 OPTIONS GENERAL VIEW 9 MAINTENANCE 9.1 GENERAL MAINTENANCE 9.2 COOLING FAN MAINTENANCE 9.3 BATTERY MAINTENANCE 9.4 SERVICE REQUIRED LP 33 40 kVA = 70% SERVICE REQUIRED 10 NOTES 10.1 NOTES FORM RIDER FOR WARRANTY FOR SALE OF SiteProTM, DIGITAL ENERGYTM SG Series and LP Series UPS.