LDC104 TOTAL SURGE TEST
LDC104 Total Surge 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 LDC104 Total Surge Test is performed to verify that 28 VDC utilization equipment continues to operate and maintains
the specified performance when power is supplied at the Normal Low Steady State (NLSS) and Normal High Steady State (NHSS) limits.
Objective Purpose
- To verify the robustness of 28 VDC utilization equipment against total surge conditions.
- To ensure continuity of performance under normal aircraft electrical operating conditions.
Test Scope Scope
- Total surge conditions at the NLSS and NHSS limits.
- Utilization equipment with a 28 VDC power input.
Technical Approach Process
- A distorted voltage waveform is applied for a minimum of 30 minutes.
- It is verified that the utilization equipment continues operating and does not create any unsafe condition.
Typical Applications Use
- Military aircraft electrical power systems.
At our STEST facility in Ankara, accredited by TURKAK, the LDC104 Total Surge Test is performed within the scope of the MIL-STD-704 Aircraft Electric Power Characteristics standard 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 |