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Power Monitors

NAI's Power Monitors are used to monitor voltage, frequency, phase characteristics, or phase rotation of single- and three-phase power lines. Specifically designed for rugged defense and industrial applications, these Power Monitors meet the most stringent performance and environmental requirements.

Power Monitors Model iPM
Power Monitor - iPM
  • Power: AC
  • Input Config: 4-Wire Wye Single Phase 3-Wire Delta
  • Voltage: Single Phase: 80 Vrms - 288 Vrms 4-Wire Wye: 80 Vrms - 288 Vrms 3-Wire Delta: 104 Vrms - 528 Vrms
  • Frequency: 47 - 800 Hz
  • Monitors: AC Voltage Band Frequency Band Peak Voltage DC Component Distortion (THD) Phase
  • Contact Form: DPDT or 3PDT
  • Power Diss: 9 Watts
  • Input Transients: MIL-STD-704 MIL-STD-1399
  • Other: RS-485 Communication Field Adjustable Through RS-485 Serial Interface

Power Monitors Model YMA/YQA
YMA and YQA
  • Power: AC
  • Input Config: 4-Wire Wye or Single Phase
  • Voltage: 115 Vrms
  • Frequency: 50, 60 or 400 Hz
  • Monitors: AC Voltage Band Frequency Band Phase
  • Contact Form: DPDT or 3PDT
  • Power Diss: 6 Watts
  • Input Transients: MIL-STD-704
  • Other: Field Adjustable Through Accessible Adjustment Potentiometers

Power Monitors Model PMA/PQA
PMA and PQA
  • Power: AC
  • Input Config: 4-Wire Wye or Single Phase
  • Voltage: 115 Vrms or 220 Vrms
  • Frequency: 50, 60 or 400 Hz
  • Monitors: AC Voltage Band Frequency Band Phase
  • Contact Form: DPDT or 3PDT
  • Power Diss: 6 Watts
  • Input Transients: MIL-STD-704
  • Other: Not Applicable

Power Monitors Model 109
109
  • Power: AC or DC
  • Input Config: 4-Wire Wye or Single Phase
  • Voltage: 115 Vrms, 220 Vrms or 28 VDC
  • Frequency: 50, 60 or 400 Hz (Only for AC Power Application)
  • Monitors: AC Voltage Band Frequency Band Phase
  • Contact Form: 3 SPDT
  • Power Diss: 7 Watts
  • Input Transients: MIL-STD-704
  • Other: N/A

AC Voltage Monitors

NAI's AC- and DC-powered AC voltage monitors are used to monitor and measure voltage characteristics of single- and three-phase power lines. Field-adjustable AC voltage monitors are also available. These monitors are specifically designed for rugged defense and industrial applications.

AC Voltage Monitors Model DAA
DAA
  • Power: AC
  • Input Config: 3-Wire Delta
  • Voltage: 115 Vrms or 220 Vrms
  • Frequency: 50, 60 or 400 Hz
  • Monitors: AC Voltage Band
  • Contact Form: DPDT or 3 SPDT
  • Power Diss: 7 Watts
  • Input Transients: MIL-STD-704
  • Other: N/A

AC Voltage Monitors Model VAA/VQA
VAA and VQA
  • Power: AC
  • Input Config: 4-Wire Wye or Single Phase
  • Voltage: 115 Vrms or 220 Vrms
  • Frequency: 50, 60 or 400 Hz
  • Monitors: AC Voltage Band
  • Contact Form: DPDT or 3 SPDT
  • Power Diss: 6 Watts
  • Input Transients: MIL-STD-704
  • Other: N/A

AC Voltage Monitors Model VMA
VMA
  • Power: AC
  • Input Config: 4-Wire Wye or Single Phase
  • Voltage: 115 Vrms or 220 Vrms
  • Frequency: 50, 60 or 400 Hz
  • Monitors: AC Voltage Band
  • Contact Form: DPDT or 3 SPDT
  • Power Diss: 6 Watts
  • Input Transients: MIL-STD-704
  • Other: Field Adjustable Through Adjustment Potentiometers

AC Voltage Monitors Model VAD/VQD
VAD and VQD
  • Power: DC
  • Input Config: 4-Wire Wye or Single Phase
  • Voltage: 28 VDC
  • Frequency: N/A
  • Monitors: AC Voltage Band
  • Contact Form: DPDT or 3 SPDT
  • Power Diss: 3 Watts
  • Input Transients: MIL-STD-704
  • Other: N/A

Phase Monitors

NAI's AC- and DC-powered Phase Monitors are used to protect three-phase loads from damage due to phase reversals or phase absence. Contacts may be used to disconnect the load or to operate alarm circuits or both. Upon application of power, the output relay energizes if all phases are connected and the phase sequence is ABC. If any phase becomes disconnected or if the phase rotation is abnormal, the relay immediately de-energizes. These monitors are specifically designed for rugged defense and industrial applications.

Phase Monitors Model PAA/PLA
PAA and PLA
  • Power: AC
  • Input Config: 4-Wire Wye
  • Voltage (Operating): 115 or 220 Vrms
  • Frequency (Operating): 50, 60 or 400 Hz
  • Monitor Characteristics: Phase
  • Contact Form: DPDT or 3 SPDT
  • Power Diss: 4 Watts
  • Input Transients: MIL-STD-704

Phase Monitors Model PAD/PLD
PAD and PLD
  • Power: DC
  • Input Config: 4-Wire Wye
  • Voltage (Operating): 28 VDC
  • Frequency (Operating): N/A
  • Monitor Characteristics: Phase
  • Contact Form: DPDT or 3 SPDT
  • Power Diss: 3 Watts
  • Input Transients: MIL-STD-704

Flashers

NAI’s Aircraft Warning, Navigation Light, and Position Light Flashers are general purpose, solid state, and low-current units. Designed for airborne use, these units conform to all military specifications. All components are rigidly mounted within the fully encapsulated and hermetically sealed flasher assembly.

Flashers Model A738
A738
  • Input Voltage: 28 VDC
  • Output Current: 2.5 Amps
  • Inverse Voltage: N/A
  • Output Voltage Drop: 4% of Input Voltage
  • Input Transients: MIL-STD-704
  • Other: QPL-MS 27710 Per MIL-F-26301D

Flashers Model A915-8
A915-8
  • Input Voltage: 115 VDC
  • Output Current: 4 Amps
  • Inverse Voltage: N/A
  • Output Voltage Drop: 4% of Input Voltage
  • Input Transients: N/A
  • Other: QPL-MS 25205-7 Per MIL-F-26301D

Flashers Model A915
A915
  • Input Voltage: 28 VDC
  • Output Current: 5 Amps
  • Inverse Voltage: N/A
  • Output Voltage Drop: 4% of Input Voltage
  • Input Transients: N/A
  • Other: Radio Interference Per MIL-1-6181D and QPL MS24577-2A Per MIL-F-26301D