Energy Tech Laboratories EDP70 manual Recommended wire sizes

Page 22

Recommended wire sizes

1)It is recommended that the external cables and protection be selected for the highest rated unit of the model in use.

2)Reserve (or primary) input and output Neutral cable size should be greater than that of the line cables in order to be able to supply non-linear loads having a Crest Factor of up to 3:1 (i.e. where neutral current = 1.7 x line current).

If non-linear loads are not to be supplied from the Installation, the Neutral can be of the same size as the load cable.

3)Recommended AC input overcurrent protection represents 125% of nominal full load current (continuous) plus the short duration input current (non-continuous) for battery re- charging per NEC 220-10 b.

4)UPS output cables should be run in separate conduits from input cables.

5)Grounding conductors are sized per NEC 250-95.

6)Cable sizes are based upon NEC.

Recommended sizes only. Be sure to follow the codes which apply to your installation.

Refer to UPS connection data table on following page.

page 22 --MI00/10056 rev.1--05/2001

Image 22

Contents EDP70 Plus Important Safety Instructions Read Before Installing ALL CASES, Seek Medical Attention Immediately Contents Figures Summary of the manual Block diagramIntroduction Summary of the equipment24kVA Standard Configuration Functions 480VOperational modes 24/36kVA Ratings10 --MI00/10056 rev.1--05/2001 General safety SafetySymbols Battery precautions Electrical precautionsBattery safety equipment Mechanical characteristics InstallationStorage 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 Battery charge inhibited Signal connectionsEmergency Power Off Thermostick connector 50/80kVA onlyControls Display indicatorsUser Controls Control Panel LCDStart UP Installing the EPO Maintenance BypassSHUT-DOWN MI00/10056 rev.1--05/2001-- Mimic Visual and Audible AlarmsSilencing Audible Alarm 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 MatrixBattery Autonomy Test Battery TestResetting data loss manually 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 Cubicle13.3 EDP70 Plus above 20kVA Battery Installation/Start-up Maintenance and Spare Parts13.4 EDP70 Plus above 20kVA Battery Cubicle EDP70 Plus System LOG