Energy Tech Laboratories EDP70 manual Functions, 480V

Page 8

S3 Maintenance Bypass

Reserve

S2

Supply

 

 

 

 

 

S1

480V

AC Supply

IN THE ABSENCE OF A SEPARATE RESERVE SUPPLY THE RESERVE IS DERIVED FROM THE AC UTILITY INPUT WITH THE JUMPER CONNECTED AS INDICATED

3

1

Battery

Contactor

240 Cells

 

2

 

 

 

(External)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

S5

5

S4

4

480Y/277V

208Y/120V

Figure 2 – Block diagram – 50/80kVA

The uninterruptible power system consists of the following:

 

1

-

RECTIFIER/INVERTER

S1

= Equipment ON/OFF switch

2

-

BATTERY

S2

= Equipment Reserve switch

3

-

BACKFEED PROTECTION

S3

= Equipment By-pass switch

4

-

INVERTER STATIC SWITCH

S4

= Equipment OUTPUT switch

5

-

RESERVE STATIC SWITCH

(INVERTER OUTPUT switch for 50/80kVA only)

 

 

 

S5

= RESERVE OUTPUT switch for 50/80kVA only

1.4Functions

RECTIFIER / BATTERY CHARGER

The rectifier/battery charger transforms the alternating current of the mains supply to direct voltage to maintain the battery in a fully charged state and also supply the inverter.

BATTERY

The battery is an energy reserve that is used by the inverter and the load whenever the mains supply fails.

INVERTER

The inverter changes the direct voltage from the rectifier or from the battery into a three phase sinusoidal alternating voltage for the external supply.

ELECTRONIC STATIC SWITCH

The function of the electronic static switch is to select one of the two sources of alternating voltage and to supply it to the external load. The two sources of voltage supplied to the static switch are the output of the inverter and the reserve supply. In normal working conditions, the static switch supplies the load from the inverter.

SWITCHES

The switches permits maintenance and repair of the UPS, without interrupting the supply to the load.

page 8 --MI00/10056 rev.1--05/2001

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Contents EDP70 Plus Important Safety Instructions Read Before Installing ALL CASES, Seek Medical Attention Immediately Contents Figures Block diagram IntroductionSummary of the manual Summary of the equipment24kVA Standard Configuration Functions 480VOperational modes 24/36kVA Ratings10 --MI00/10056 rev.1--05/2001 Symbols SafetyGeneral safety Battery safety equipment Electrical precautionsBattery precautions Storage InstallationMechanical characteristics ALL Measurements are Millimeters and Inches NR4 16 --MI00/10056 rev.1--05/2001 Battery Cabinet Drawing for 24/36kVA Ratings 18 --MI00/10056 rev.1--05/2001 Battery Cabinet Drawing for 50/80kVA Ratings 20 --MI00/10056 rev.1--05/2001 Installation Recommended wire sizes Supply Output Reserve Supply UPS Type Ventilation = 2770 - - - ∙ e 0.125 h Tk / T0 Tr TkConnection OutputUninterruptible Power System No Unauthorized Operation MI00/10056 rev.1--05/2001-- Table of T& B’s cat.no.s for terminals and crimp tools Electrical connectionsBattery Compartment 24 12/18/24kVAOutput, Reserve, Input Reserve Ground Primary Input Output External Batteries 36 24/30/36kVA Observe Polarities and Orientations RS232 Female EDP70 Plus 50/80kVA 36 --MI00/10056 rev.1--05/2001 QS1 QS2 QS3 QS4 QS5 Signal connections Emergency Power OffBattery charge inhibited Thermostick connector 50/80kVA onlyUser Controls Display indicatorsControls Control Panel LCDStart UP SHUT-DOWN Maintenance BypassInstalling the EPO MI00/10056 rev.1--05/2001-- Visual and Audible Alarms Silencing Audible AlarmMimic Liquid Crystal DisplayDisplay Page Headings System NormalBattery Test Weekly Power History Down to Access Load Time on Reserve xxg xxh xxm xxs Inverter Load Abnormal operating mode messages System AlarmStop DUE to Overload RECTIFIER/BATTERY Alarms Message Condition Inverter Alarms Message Condition LOAD/RESERVE Alarms Message Condition Power History Power History MatrixResetting data loss manually Battery TestBattery Autonomy Test MI00/10056 rev.1--05/2001-- Computer Interface 11.1 AS400Remote Alarms 11.2 RS23213.1 EDP70 PLUS/24/18/12 Battery Installation/Start-up Batteries= EDP70 PLUS/24/18/12 Internal Battery Shelves 13.2 EDP70 PLUS/24/18/12 Optional Battery Cubicle13.4 EDP70 Plus above 20kVA Battery Cubicle Maintenance and Spare Parts13.3 EDP70 Plus above 20kVA Battery Installation/Start-up EDP70 Plus System LOG