Monitors & Flashers

Monitors and Flashers from NAI

NAI designs and manufactures a wide variety of COTS and Custom Power Monitors, Time Delay Relays, and Flashers specifically designed for rugged defense and industrial applications.

Power Monitors

NAI's Intelligent Power Monitors (iPM) all conform to MIL standards. They provide in-spec performance of AC Voltage, DC Voltage, Frequency, and Phase, and output a relay alarm when the parameter being monitored is out of spec.

Time Delay Relays

NAI offers field-adjustable, AC- and DC-powered Time Delay Relays. These variable, high reliability devices are used in applications such as event sequencing, alarm controls, and instrument controls, where precise time intervals are required.

Flashers

NAI offers general-purpose, AC- and DC-powered Flashers. These solid-state, hermetically-sealed devices provide low current and high reliability. Typical applications include periodic turn-on-and-off warning lights, and indicator lights for navigation and position.

 

Frequency Monitors

ModelPowerInput ConfigurationVoltage (Operating)Frequency (Operating)Monitoring CharacteristicsContact FormPower DissipationInput Transients
FAA/FQAAC4-Wire Wye115 or 220Vrms50, 60 or 400HzFrequency BandDPDT or 3PDTNot AvailableMIL-STD-704 

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Phase Monitors

ModelPowerInput ConfigurationVoltage (Operating)Frequency (Operating)Monitoring CharacteristicsContact FormPower DissipationInput Transients
PAA/PLAAC4-Wire Wye115 or 220Vrms50, 60 or 400HzPhaseDPDT or 3PDT4 WattsMIL-STD-704 
PAD/PLDDC4-Wire Wye28VDCNot ApplicablePhaseDPDT or 3PDT3 WattsMIL-STD-704 

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Flashers

ModelInput VoltageOutput CurrentInverse VoltageOutput Voltage DropInput TransientsOther
F58028VDC500mATo 600V, no damage1.5VDCMIL-STD-704Radio Interference Per MIL-1-6181D
A73828VDC2.5 AmpsNot Available4% of Input VoltageMIL-STD-704QPL - MS 27710 Per MIL-F-26301D
A915-8115Vrms4 AmpsNot Available4% of Input VoltageNot AvailableQPL - MS 25205-7 Per MIL-F-26301D
A91528VDC5 AmpsNot Available4% of Input VoltageNot AvailableRadio Interference Per MIL-1-6181D -and- QPL MS24577-2A Per MIL-F-26301D

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AC Voltage Monitors

ModelPowerInput ConfigurationVoltage (Operating)Frequency (Operating)Monitoring CharacteristicsContact FormPower DissipationInput TransientsOther
DAAAC3-Wire Delta115 or 220Vrms50, 60 or 400HzAC Voltage BandDPDT or 3PDT7 WattsMIL-STD-704Not Applicable
VAA/VQAAC4-Wire Wye -or- Single Phase115 or 220Vrms50, 60 or 400HzAC Voltage BandDPDT or 3PDT6 WattsMIL-STD-704Not Applicable
VMAAC4-Wire Wye -or- Single Phase115 or 220Vrms50, 60 or 400HzAC Voltage BandDPDT or 3PDT6 WattsMIL-STD-704Field Adjustable Through Accessible Adjustment Potentiometers
VAD/VQDDC4-Wire Wye -or- Single Phase28VDCNot applicableAC Voltage BandDPDT or 3PDT3 WattsMIL-STD-704Not Applicable

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Power Monitors

ModelPowerInput Config.VoltageFreq.MonitorsContact FormPower Diss.Input TransientsOther
Power Monitor - iPMAC4-Wire Wye Single Phase 3-Wire DeltaSingle Phase: 80Vrms - 288Vrms 4-Wire Wye: 80Vrms - 288Vrms 3-Wire Delta: 104Vrms - 528Vrms47 - 800HzAC Voltage Band Frequency Band Peak Voltage DC Component Distortion (THD) PhaseDPDT or 3PDT9 WattsMIL-STD-704 MIL-STD-1399RS-485 Communication Field Adjustable Through RS-485 Serial Interface
YMA/YQAAC4-Wire Wye -or- Single Phase115Vrms50, 60 or 400HzAC Voltage Band Frequency Band PhaseDPDT or 3PDT6 WattsMIL-STD-704Field Adjustable Through Accessible Adjustment Potentiometers
PMA/PQAAC4-Wire Wye -or- Single Phase115 or 220Vrms50, 60 or 400HzAC Voltage Band Frequency Band PhaseDPDT or 3PDT6 WattsMIL-STD-704Not Applicable
109AC or DC4-Wire Wye -or- Single Phase115Vrms, 220Vrms or 28VDC50, 60 or 400Hz (Only for AC Power Application)AC Voltage Band Frequency Band Phase3 SPDT7 WattsMIL-STD-704Not Applicable

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