Eaton Cutler-Hammer IQ DP-4000 Installation, Operation And Maintenance Instructions

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safety precautions

IQ DP-4000SECTION 5 - PROGRAMMING THE IQ DP-4000If the sampled voltage is greater than the overvoltagedetection level for longer than the alarm delay (seeSection 5. 1 2. 1 0), the enabled alarm activates. SeeTable 5.T for setting the overvoltage detection level.•= OFF r:J = ONTable 5. T Overvoltage Detection Level Settings5. 12. 13 Undervoltage Detection Level SetpointThe undervoltage detection level is a lower percentageof the nominal AC line voltage. When the alarm is set toactivate on an undervoltage, you must determine thedetection level. See Sections 5.5 and 5.1 2.4.The alarm activates when the sampled voltage is lessthan the undervoltage detection level for longer than thealarm delay (see Section 5. 1 2. 1 0).•= OFF r:J = ONTable 5. U Undervoltage Detection Level Settings5. 12. 14 Voltage Phase Unbalance Detection LevelAlarm SetpointIf the selected alarm has been set to activate on avoltage phase unbalance (see Section 5.1 2.6), you mustdetermine the voltage phase unbalance detection level.A voltage phase unbalance is calculated by taking themaximum voltage deviation between any two phasesTD1 7548Aand comparing that voltage to a percentage of thenominal AC line voltage.If the sampled voltage deviation is greater than thevoltage phase unbalance detection level for longer thanthe alarm delay (see Section 5. 1 2. 1 0), the alarmactivates. See Table 5.V for setting the voltage phaseunbalance detection level.•= OFF r:J = ONTable 5. V Voltage Phase Unbalance Detection LevelSettings5. 12. 15 Alarm Reset Threshold SetpointThe IQ DP-4000 has three alarm conditions withprogrammable thresholds:• overvoltage• undervoltage• voltage phase unbalanceYou must set the levels for the IQ DP-4000 alarm toreset. Both alarms have an independent reset threshold;however, the reset threshold is common to all threealarm conditions.The reset threshold is based on the detection levels setfor the alarm conditions, as well as the nominal AC linevoltage. The reset thresholds are described for each ofthe three programmable alarm conditions. See Table5.W for setting the reset threshold.29www . ElectricalPartManuals . com