MIL-DTL-2212 Contactors And Controllers, Electric Motor Ac Or Dc, And Associated Switching DevicesThis specification covers alternating current \(AC\) and direct current \(DC\) motor controllers, contactors \(see 6.8.6\), and associated switching devices \(see 6.8.3\). Included are magnetic controllers, controller parts \(see 6.8.52\), limit switches \(see 6.8.90\), pressure switches \(see 6.8.92\), temperature switches \(see 6.8.95\), selector switches \(see 6.8.94\), push-buttons \(see 6.8.57\), and similar devices used for control of electric motors \(see 6.8.19\). Semiconductor \(solid-state\) devices used as parts for magnetic controllers are included.

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MIL-DTL-2212K(SH)

3.17.11.5 Leakage current. When tested as specified in 4.6.21, the leakage current shall be limited to

5 milliamperes (mA) root mean square (rms). Leakage current shall be determined using a solidly grounded power

source. Equipment with EMI filters connected line-to-ground shall be balanced to ensure that the leakage current in

the equipment ground does not exceed 5 mA.

3.17.11.6 Output leakage current. When tested as specified in 4.6.22, the OFF-state leakage current in the

output circuit of solid-state relays, contactors, and switching devices shall not exceed the values specified in

table IX.

TABLE IX. Solid-state switch output leakage current values.

Output leakage current value

Solid-state switch

Auxiliary/control

current rating

Main contacts

circuit contacts

(amperes)

(milliamperes rms)

Less than 25 A AC

5.0

10.0

25 A AC or more

10.0

25.0

All DC

0.1

3.17.11.7 Output voltage drop. When solid-state switching devices are tested as specified in 4.6.23, the

ON-state output voltage drop shall not exceed the values specified in table X.

3.17.11.8 Voltage ramp rate. Equipment required to operate under the condition of voltage ramp (see 6.2) shall

perform when tested as specified in 4.6.27.

TABLE X. Solid-state switch output voltage drop.

Maximum ON-state

Solid-state switch voltage

voltage drop

rating

(volts peak)

5-75 VDC

2.0

90-250 VDC

3.0

115/440 VAC

2.0

115 VAC 1/

4.0

440 VAC 1/

8.0

NOTE:

Devices series connected with the load.

3.18 Workmanship. The motor controller, including all parts and accessories, shall be free from cracked or

displaced parts, burrs, sharp edges, and other defects that will detrimentally affect life and serviceability. Particular

attention shall be given to neatness and thoroughness of soldering, marking of parts and subassemblies, wiring,

welding and brazing, plating, riveting, finishes, machine operations and screw assemblies.

4. VERIFICATION

4.1 Classification of inspections. The inspection requirements specified herein are classified as follows:

Qualification inspection (see 4.3).

Conformance inspection (see 4.4).