NGL Series RTCA/DO-160 Qualified 4.5 KVA 270 VDC Nominal Input Pure Sine Wave DC-AC Inverters

NGL Series RTCA/DO-160 Qualified 4.5 KVA 270 VDC Nominal Input Pure Sine Wave DC-AC Inverters

  • Formally Qualified to RTCA/DO-160G Environmental and RTCA/DO-160G / MIL-STD-461F EMI Standards
  • Lightweight and extremely compact
  • High reliability – MTBF exceeds 100,000 hours
  • O.V., O.L. and O.T. protected
  • Modular Design with MTTR below 30 minutes
  • Tight voltage and frequency regulation
  • Conformal Coated PC Boards
  • All Stainless-Steel Hardware
  • Combining 3 inverters to form a 3 phase power system is optional
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Description

Nova’s Lightweight NGL-Series DC-AC Inverters are high-reliability power sources specifically designed for demanding applications in extreme shock, vibration, humidity, temperature and EMI environments in compliance to RTCA/DO-160 Environmental and MIL-STD-461F EMI standards. This unit’s compact freestanding chassis measures 7″ high x 8” wide x 14.77” deep, and weighs only 25.7 pounds. It features an aircraft power input of 270 VDC nominal, and an output of 120 VAC, 60 hz , single-phase, 4.5 KVA / 4 KW. Other voltages and frequencies are available optionally. Flexible design architecture allows this unit to be tailored to many different types of applications, including:

  • Military Applications: Including Aircraft, UAV, Submarine, HMMWV, Shipboard, Mobile Power Units, Shelters, Transportable Systems, Tactical Systems, Ground Support, and more.
  • Heavy-Duty Industrial Applications
  • Demanding Commercial Applications
  • Communications Systems

These rugged inverters are extremely reliable, designed to provide many years of service in high shock, vibration, humidity, and EMI environments. Combining 3 inverters to form a 3 phase power system is optional. In this configuration, a 3 phase and neutral line is generated with precise synchronization.

Partial Standard Product Listing

60 Hz Models
MODELSOUTPUT VAC OUTPUT FREQ. (HZ) CONT. OUTPUT POWER WEIGHT (LB) SIZE IN.(HXWXL) OUTLINE DRAWING
 
NGL4.5K60-270-120 120604.5 KVA / 4 KW 25.77 x 8 x 14.77 QUOTE
50 Hz Models
MODELSOUTPUT VAC OUTPUT FREQ. (HZ) CONT. OUTPUT POWER WEIGHT (LB) SIZE IN.(HXWXL) OUTLINE DRAWING
 
NGL4.5K50-270-220220504.5 KVA / 4 KW25.7 7 x 8 x 14.77 QUOTE
400 Hz Models
MODELSOUTPUT VAC OUTPUT FREQ. (HZ) CONT. OUTPUT POWER WEIGHT (LB) SIZE IN.(HXWXL) OUTLINE DRAWING
 
NGL4.5K400-270-115 1154004.5 KVA / 4 KW25.7 7 x 8 x 14.77 QUOTE
Partial Three Phase Model Selection - Lower Capacities Available - Consult Factory
3 PHASE MODELS OUTPUT VAC OUTPUT FREQ. (HZ) CONT. OUTPUT POWER APPROX. WEIGHT (LB) SIZE IN.(HXWXL)  
NGL13.5K3/6-270 (120/208) 120/208 6013.5 KVA / 12 KWC/F C/F QUOTE
NGL13.5K3/5-270 (220/380) 220/380 5013.5 KVA / 12 KWC/F C/F QUOTE
NGL13.5K3/4-270 (115/200)115/200 40013.5 KVA / 12 KWC/F C/F QUOTE
ELECTRICAL
  • Input Voltage: 270 VDC Nominal, 250-280 VDC Operating Range (other ranges available)
  • Output Voltage: 120 VAC (115 and 230 VAC optional)
  • Frequency: 50 / 60 / 400 Hz. Available
  • Voltage Regulation: ± 2% NL to FL
  • Frequency Regulation: ± 0.5% NL to FL
  • Harmonic Distortion: 5% THD, 3% typical
  • Input Power Factor: 0.95 or Better @ half-full load
  • Efficiency at full load: 85% @ full load typical
  • Connections: MS Connector (mates opt.)
STANDARD PROTECTIVE FEATURES
  • Overload, Thermal, Input Undervoltage, and Input Overvoltage Protected
ENVIRONMENTAL
  • Operating Temperature: -20° to +55°C (Extended ranges optional) per RTCA/DO-160G Section 4.5.1-4.5.4, Category Al
  • Storage temperature range: -55° to +85°C per RTCA/DO-160G Section 4.5.1-4.5.4, Category Al
  • Humidity: to 95% (+/-4%) RH non-condensing per RTCA/DO-160G Section 6, Category A. All boards conformal coated with Acrylic MIL-I-46058 Type R.
  • Altitude: To 15,000 Ft. (4,572m) operating per RTCA/DO-160G, Section 4.6.1, Category Al – 40,000 ft. (12,192m) non-operating
  • Functional Shock: per RTCA/DO-160G Section 7.2.1
  • Crash Shock: per RTCA/DO-160G Section 7.3.1
  • Audible Noise: Less than 55 dbA at 5 ft.
  • MTBF: 100,000+ hours per field data @ +25C Ambient Ground-Fixed
  • MTTR: 30 minutes by qualified personnel
STANDARD REMOTE CONTACTS / COMMUNICATIONS
  • Alarm Contacts(OT, OL, Remote On/Off, and Summary Fault)
STANDARD INDICATORS
  • Over Temperature (Red)
  • Overload (Red)
  • Output On (Green)
  • Summary Fault (Red)

OPTIONS

SYSTEM COMPLIANCE

Environmental: The Inverter was Environmentally Tested per RTCA/DO-160G for the following: Operational Temp / Storage Temp / Temp Variation, Altitude, Decompression, Humidity, Acceleration, Vibration, Functional Shock, and Crash Safety Shock.

Additional Ruggedization to meet RTCA/DO-160 Environmental Standards: The Inverter’s construction is extremely robust, and ruggedized throughout. All components and modules within the unit are mounted using additional steel brackets and heavy-duty stainless-steel hardware, which is then further secured using Loctite and RTV where required. All boards are conformal-coated (Acrylic MIL-I-46058 Type R) for maximum resistance to potential condensation and fungus growth.

Temperature

  • Operating: -15°C to +55°C (-5°F to +131°F)
  • Non-Operating/Storage: -55°C to +85°C (-67°F to +185°F)
  • Test lAW RTCA/DO-160G Section 4.5.1-4.5.4, Category Al

Temperature Variation

  • 2°C per minute rate
  • -15°C to +55°C
  • Test lAW RTCA/DO-160G Section 5, Category C

(For equipment in a temperature-controlled internal section of the aircraft)

Altitude

  • 15,000 ft
  • Test lAW RTCA/DO-160G, Section 4.6.1, Category Al

Decompression

  • Decompression altitudes from 8,000 ft to 45,000 ft in 15 seconds
  • Test IAW RTCA/DO-160G Section 4.6.2, Category A1

 Humidity

  • 95±4% RH at 50±2°C
  • Test IAW RTCA/DO-160G Section 6, Category A

Sustained Acceleration Loads

Limit Loads: The Inverter shall perform as specified when subjected to the following sustained acceleration limit load conditions:

  • 4.68 G in all orientations per RTCA/DO-160G Section 7.3.3

Ultimate Loads: The Inverter shall withstand the following sustained acceleration ultimate conditions:

  • 9 G in all orientations per RTCA/DO-160G Section 7.3.3

Operational Vibration

  • Test IAW RTCA/DO-160G Section 8, Table 8-1, Category S, Curve C
  • Fixed Wing, 1 Hr/Axis Random Vibration at Performance Level.

Operational Shock

  • Functional Shock, terminal peak saw tooth, A=6.0 G, D=11 ms, 3 pulses in each direction of the three orthogonal axes for a total of 18 pulses
  • Test IAW RTCA/DO-160G Section 7.2.1

Crash Shock

  • Crash Hazard, terminal peak saw tooth, A=20.0 G, D=11 ms, 1 pulse in each direction of the three orthogonal axes for a total of 6 pulses
  • Test IAW RTCA/DO-160G Section 7.3.1

 

Internal EMI Reduction Package to meet MIL-STD-461 and RCTA/DO-160G: The design of this unit is specifically focused on reducing EMI emissions. The Inverter contains substantial internal filtering to minimize EMI emissions. Inputs which may be susceptible to transients are protected by several methods. The compact chassis is specifically treated with low surface resistivity finishes on the interior. All aluminum parts are treated with clear irridite. The steel parts are treated with zinc plate, followed by a clear chromate. Paint method is designed to assure excellent bonding of mating sheet metal parts. All input and output ventilation filters include mesh filters.

MIL-STD-461F (using Fixed Wing Internal limits specified in each test, as appropriate):  CE102, RE102, CS101, CS114, CS115, CS116, RS103

RTCA/DO-160G:  Section 21, Category M Radio Frequency (RF) Energy Emission Requirements and Section 25, Category A Electrostatic Discharge (ESD) Requirements.

 

 

NGL Series RTCA/DO-160 Qualified 4.5 KVA 270 VDC Nominal Input Pure Sine Wave DC-AC Inverters Data Sheet

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