Eaton T2235 Series Installation, Operation And Maintenance Manual

Contents

Operation16 Eaton T2235 Series eATS ePDUs P-164000014—Rev 1 www.eaton.com/ePDUCircuit BreakersCircuit breakers protect the power controller and all devices connected to it from fault conditions, such as ashort circuit or an overload. Circuit breakers are optional for ePDUs with less than 30A input. However, circuitbreakers are mandatory for ePDUs with 30A input or greater.! IMPORTANTIf a supplementary protector is used in the ePDU instead of a listed circuit breaker, additionalbranch circuit protection is required down-line from the power source to the ePDU.Power OutletsAll outlets are on the rear panel. Power is available to the switched outlets after the main power is eitherconnected or the optional breaker is set to the ON position.Auto-Transfer Primary to SecondaryFirm drop-out voltage points allow a transfer before an undervoltage affects equipment operation.Table 2 shows the transfer voltage ranges.Sources do not need to be phase synchronized. Source transfer time is less than 30 ms. (The front panel LEDsindicate which sources are available and selected at the output, as shown in Figure 5.)Optional EMI/RFI FilteringEMI/RFI Filtering (Option 3)Power filtering reduces the effects of EMI or RFI. This type of “noise” can be introduced from many sources,inside or outside your facility. The filtering is bi-directional, so it helps prevent emissions from connectedequipment. Select “F” in Option 3 to include EMI/RFI Filtering or “N” to exclude it.Table 3 shows EMI Filter Specifications.Table 2. Transfer Voltage RangesNominal Voltage Drop-Out Voltage Pull-In Voltage120V 90V 103V208V 182V 195V240V 197V 210VTable 3. EMI Filter SpecificationsCommon mode insertion loss Differential mode insertion lossSpecification Line-to-Ground in 50 ohm circuit Line-to-Line in 50 ohm circuitCurrent rating 20A 20AMHz dB dB240 V 197V 210V* The rated voltage is 120/250 Vac. The operating frequency is 50/60 Hz.