STEST

LDC101 LOAD MEASUREMENTS TEST

Aircraft Electrical Power Systems

LDC101 Load Measurements Test

The MIL-STD-704 Aircraft Electric Power Characteristics standard, published by the U.S. Department of Defense, defines the requirements used to assess the compatibility of equipment installed on military aircraft under specified voltage, frequency, phase, ripple, and current conditions. The LDC101 Load Measurements Test, performed within the scope of this standard, is applied to verify that 28 VDC utilization equipment meets the required load limits, inrush current, and current spectrum requirements.

Objective Purpose

  • To verify that 28 VDC utilization equipment complies with the specified load limits.
  • To support safe and stable operation within aircraft electrical power systems.

Test Scope Scope

  • Assessment of load limits and inrush current limits.
  • Verification of current distortion limits and current spectrum limits.

Technical Approach Process

  • The LDC101 Load Measurements Test is conducted in accordance with MIL-STD-704 requirements.
  • During the test, the utilization equipment shall not be damaged and shall not create any unsafe condition.

Typical Applications Use

  • Military aircraft electrical power systems.
  • Aviation equipment operating on a 28 VDC power architecture.

At our STEST facility in Ankara, accredited by TURKAK, the LDC101 Load Measurements Test is performed in accordance with TS EN ISO/IEC 17025 within the scope of the MIL-STD-704 Aircraft Electric Power Characteristics standard.

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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

EMI/EMC Test Chamber Features

Technical Specification
EMC-1
EMC-2
EMC-3
EMC-4
Unit of Measurement
Width
7000
13000
7250
9000
mm
Length
6000
10000
4000
5500
mm
Height
3850
9000
2850
5000
mm
Door Dimensions
2000×1000
4200×4750
1950×950
2000×2000
mm
Turntable Diameter
-
6000
-
2000
mm
Turntable Load Capacity
-
70
-
2
ton
Reflection
Fully Anechoic
Semi-Anechoic
Semi-Anechoic
Semi-Anechoic
-