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NPFC - MIL-R-19523

RELAYS, CONTROL

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Organization: NPFC
Publication Date: 30 March 1990
Status: active
Page Count: 21
scope:

This specification covers the requirements for control relays for Naval shipboard use.

The PIN shall be of the following form, as specified (see 6.2):

M19523- AC B H B A 2 (see (see (see (see (see (see (see 1.2.1.1) 1.2.1.2) 1.2.1.3) 1.2.1.4) 1.2.1.5) 1.2.1.6) 1.2.1.7)

The military specification number consists of a prefix M which indicates a military specification item and the specification number.

The electrical service for coil operation shall be designated by two letters as follows:

AC = Alternating current (ac) service. DC = Direct current (dc) service.

Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Naval Sea Systems Command, SEA 55Z3, Department of the Navy, Washington, DC 20362-5101 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.

Endurance shall be designated by a single letter as follows:

A = 500,000 operations. B = 100,000 operations. C = 25,000 operations.

The operating voltage (v) shall be designated by a single letter as follows:

A = 115 Volts alternating current (Vac), 60 hertz (Hz). B = 230 Vac, 60 Hz. C = 440 Vac, 60 Hz. D = 28 Volts direct current (Vdc). E = 115 Vdc. F = 125 Vdc. G = 230 Vdc. H = 250 Vdc (nominal), operating range 175 to 355 volts (V), storage battery service. J = 500 Vdc (nominal), operating range 350 to 710 V, storage battery service. K = Special.

The number of poles shall be designated by a single letter as follows:

A = 4 poles. B = 8 poles. C = 12 poles. D = 16 poles. E = 24 poles.

The ambient temperature rating shall be designated by a single letter as follows:

A = 50 degrees Celsius (°C). B = 90°C. C = Special.

The shock classification of relay contact chatter shall be designated by a single number as follows:

1 = Class I - Those relays whose contacts will not chatter in either the energized or deenergized position. 2 = Class II - Those relays whose contacts will not chatter long enough to either drop out the relay or drop out a standard relay having a dropout time of 4 milliseconds (ms). Contacts shall not alter state due to shock. 4 = Class III - Those relays whose contacts will not chatter long enough to either drop out the relay or drop out a standard relay having a drop out time of 20 ms. Contacts shall not alter state due to shock. 6 = Class IV - Those relays whose contacts will not alter state due shock. 7 = Class V - No requirements for electrical operation.

intended Use:

Relays conforming to this specification are intended for use in control circuits where a number of relays are interconnected to control the proper sequencing and functioning of a complex... View More

Document History

February 24, 2021
Relays, Control
A description is not available for this item.
MIL-R-19523
March 30, 1990
RELAYS, CONTROL
This specification covers the requirements for control relays for Naval shipboard use. The PIN shall be of the following form, as specified (see 6.2): M19523- AC B H B A 2 (see (see (see (see (see...
December 30, 1966
RELAYS, CONTROL
A description is not available for this item.
September 10, 1956
RELAYS, CONTROL
A description is not available for this item.

References

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