LDC103 VOLTAGE DISTORTION SPECTRUM TEST
LDC103 Voltage Distortion Spectrum Test
The MIL-STD-704 Aircraft Electric Power Characteristics standard, prepared by the U.S. Department of Defense,
defines electrical requirements for military aircraft and airborne equipment, covering parameters such as voltage, frequency,
phase, ripple, and maximum current. The most recent revision is MIL-STD-704F Change 1, published in 2016.
This standard is widely recognized worldwide for assessing the conformity of military aircraft systems and equipment.
The LDC103 Voltage Distortion Spectrum Test is performed to verify that 28 VDC utilization equipment continues to operate
and maintains performance when subjected to voltage distortions at the frequencies and amplitudes specified in MIL-STD-704.
Objective Purpose
- To verify the robustness of 28 VDC utilization equipment against voltage distortions.
- To ensure continuity of performance under aircraft electrical power conditions.
Test Scope Scope
- Voltage distortion spectra defined in MIL-STD-704.
- Utilization equipment with a 28 VDC power input.
Technical Approach Process
- Power with the specified voltage distortion is applied for the defined duration.
- It is verified that the utilization equipment continues operating and does not create any unsafe condition.
Typical Applications Use
- Military aircraft electrical power systems.
- On-board electronic equipment powered by a 28 VDC architecture.
At our STEST facility in Ankara, accredited by TURKAK, the MIL-STD-704 LDC103 Voltage Distortion Spectrum Test is performed in accordance with TS EN ISO/IEC 17025.
REQUEST A TEST APPOINTMENT| Nominal Limits | 704A | 704B | 704C | 704D | 704E | 704F |
|---|---|---|---|---|---|---|
| Voltage (NLSS) | 24 Vdc | 22 Vdc | 22 Vdc | 22 Vdc | 22 Vdc | 22 Vdc |
| Voltage (NHSS) | 28.5 Vdc | 29 Vdc | 29 Vdc | 29 Vdc | 29 Vdc | 29 Vdc |