5. MIL-STD-461 Requirements for the Control of Electromagnetic Interference Characteristics of Subsystems and Equipment
MIL-STD-461 establishes the electromagnetic interference (EMI) and electromagnetic compatibility (EMC) requirements for military ruggedized power supplies. Compliance with the standard is key to ensuring satisfactory performance of all equipment within a system.
The tests performed under MIL-STD-461 include:
- Conducted emissions
- Conducted susceptibility
- Radiated emissions
- Radiated susceptibility
When a ruggedized power supply successfully passes the MIL-STD-461 tests, it is considered qualified for the intended application. Its use in a different system would require repeat testing against the application specific environmental criteria.
6. MIL-STD-167 Mechanical Vibrations of Shipboard Equipment
Shipboard equipment is exposed to a wide range of vibration spectra from the roll, pitch, yaw, surge, sway and heave of the vessel to internal vibrations from rotating or reciprocating machinery.
The military standards MIL-STD-167-1 and -2 are the standards that specify the procedures and establish requirements for environmental and internally excited vibration testing of Naval shipboard equipment.
MIL-STD-167-1 applies to equipment that is installed on ships propelled by conventionally shafted propulsion systems and addresses mechanical vibrations from the environment and from internal excitation caused by unbalanced rotating machinery. MIL-STD-167-2 is a classified document that addresses mechanical vibrations from reciprocating machinery and lateral and longitudinal vibrations of propulsion systems and shafting.
Testing a power supply to MIL-STD-167 ensures that it will perform as intended when exposed to the specific types of vibration encountered on board ships.
7. BONUS – RTCA/DO-160 Environmental Conditions and Test Procedures for Airborne Equipment
RTCA/DO-160 covers the environmental test criteria and standard procedures to test airborne equipment. Similar to MIL-STD-810, DO-160 testing includes over 20 different types of tests, including vibration, shocks and crash safety, temperature, magnetic effect, voltage spikes and electrostatic discharge.
DO-160 and MIL-STD-810 are two of the most common types of testing standards used to stress-test and ruggedize power supplies for aircraft equipment. The RTCA/DO-160 tests are specific to ruggedized power supplies to be used in all types of aircraft, whereas MIL-STD-810 is applicable across all environmental applications.
From MIL-STD-704 to MIL-STD-167, military standards play an important role in ensuring safe and reliable power for all types of military ships, ground vehicles and aircraft, plus commercial aircraft. While some standards such as MIL-STD-810 can be used to test power supplies for any environment, others ensure compliance of power supplies for specific military applications such as naval, aerospace and ground. It is important to note that a combination of standards is often used when qualifying a rugged power supply for military use.
Regardless of the environmental conditions, you can count on the reliability of a ruggedized power supply from Viable Power. We put our power supplies through extensive testing to ensure they meet all your requirements and appropriate military standards. Contact us for more information on our expertise and capabilities.