GE Digital Energy SG Series Installation Manual

Also see for Digital Energy SG Series: Operating manual Installation guide

Contents

g GEOPM_SGS_ISG_10K_40K_0US_V010.doc 21/45 Installation Guide SG Series 10, 20, 30 & 40 kVA3.7.3 Battery over current protection and wire sizing• Please read the safety precautions at the front of this guide carefully, and thoroughlyreview the battery manufacturers installation and maintenance manual before connectingthe batteries to the UPS.• If the UPS system has been purchased with an accompanying battery cabinet, thatcabinet should have an integral battery circuit breaker-If the UPS has been purchased without a battery cabinet or remote rack mountedbatteries are to be used then DC over current protection must be provided by others.• Choose an appropriate DC fuse or circuit breaker using the current data in the chartbelow.• Minimum battery cable requirement is based on the current data below.The AC values below are current ratings per phase.These maximum and nominal ratings should be considered when choosing theappropriate AC over current protection device.NEC (National Electric Code) Section 210-20 a rules must be applied.DC current rating is the maximum battery discharge current which the UPS allows.(See Fig. 3.7.1-1 and 3.7.1.2)AC Input Rectifier AC InputBypass AC Input DC InputF1 F3Nom. Max. F2 Nom. Max. F4SG Series 10 kVA 17.2 A 20.2 A 12 A 17.2 A 20.2 A 19.6 ASG Series 20 kVA 27.3 A 36.6 A 24.1 A 27.3 A 36.6 A 36 ASG Series 30 kVA 40.4 A 53.1 A 36.1 A 40.4 A 53.1 A 55.2 ASG Series 40 kVA 53.9 A 63.2 A 48.2 A 53.9 A 63.2 A 76 ASize of Branch Circuit Over current Protection - All Models: - "CAUTION - To reducethe risk of fire, only connect UPS to a circuit provided with (See below) maximumamperes branch circuit over current protection in accordancewith the NEC (National Electric Code), NSI / NFPA 70AC InputRectifierAC InputBypass AC Input DC InputF1 F2 F3 F4SG Series 10 kVA 30 A 15 A 30 A 25 ASG Series 20 kVA 50 A 35 A 50 A 50 ASG Series 30 kVA 70 A 50 A 70 A 70 ASG Series 40 kVA 80 A 70 A 80 A 100 A