Eaton 9E Installation And Operation Manual

Also see for 9E: Installation and operation manual Installation and operation manual Installation and operation manual Manual Manual

Contents

UPS Installation Plan and Unpacking3-10 Eaton 9E UPS (20–30 kVA, 208/220V) Installation and Operation Manual 164202124—Rev 2 www.eaton.com/powerqualityThe line-to-line unbalanced output capability of the UPS is limited only by the full load per phase current valuesfor AC output to critical load shown in Table 3-4. The recommended line-to-line load unbalance is 50% or less.Bypass and output overcurrent protection and bypass and output disconnect switches are to be supplied bythe customer. Table 3-8 lists the recommended rating for bypass and output circuit breakers.There is no manual DC disconnect device within the UPS.Battery voltage is computed at 2 volts per cell as defined by Article 480 of the NEC. Rated battery current iscomputed at 2 volts per cell.3.2.3 UPS System Interface Wiring PreparationControl wiring for features and options should be connected at the customer interface terminal blocks locatedinside the UPS.WARNINGDo not directly connect relay contacts to the mains related circuits. Reinforced insulation to themains is required.Read and understand the following notes while planning and performing the installation:l Use Class 1 wiring methods (as defined by the NEC) for interface wiring up to 30V. The wire should be ratedfor 24V, 1A minimum.l Use Class 2 wiring methods (as defined by the NEC) for interface wiring from 30V to 600V. The wire shouldbe rated for 600V, 1A minimum. 12 AWG maximum wire size.l Because of the REPO and building alarm wiring route in the UPS cabinet, the wire should be rated for aminimum of 300V.l Use twisted-pair wires for each input and return or common.l All interface wiring and conduit is to be supplied by the customer.l When installing external interface wiring between a REPO or building alarm and the UPS interface terminals,conduit must be installed between each device and the UPS cabinet.l Install the interface wiring in separate conduit from the power wiring.l All building alarm inputs require an isolated normally-open contact or switch (rated at 24 Vdc, 20 mAminimum) connected between the alarm input and common terminal. All control wiring and switch contactsare customer-supplied.l LAN and telephone drops for use with Mini-Slot connectivity cards must be supplied by the customer.l The REPO feature opens all relays in the UPS cabinet and isolates power from your critical load. Localelectrical codes may also require tripping upstream protective devices to the UPS.l The REPO switch must be a latching-type switch not tied to any other circuits.Table 3-8. Recommended Bypass and Output Circuit Breaker RatingsOutput RatingUPS Model Load Rating 208VEaton 9E–30/20 80% Rated 100A100% Rated 80AEaton 9E–30/30 80% Rated 125A100% Rated 100A