1、A-A-50623 9999974 OLb5272 980 A-A- 50623 16 September 1994 SUPERSEDING MIL-A-17196E (IN PART) 7 October 1977 (See Note i) COMMERCIAL ITEM DESCRIPTION ALARM SWITCHBOARD TYPE IC/SM The General Services Administration has authorized the use of this commercial item description as a replacement for Type
2、IC/SM Switchboards in MIL-A- 17196E(SH). Abstract. This Commercial Item Description covers requirements for IC/SM Alarm Switchboards which will enable one operator to monitor equipment functions or environmental conditions of remote equipment. IC/SM Alarm Switchboards shall be capable of being conne
3、cted to mechanical, electrical, electronic, electromechanical and environmental-sensing devices. Alarm switchboards shall be such that remote sensors located at each monitor point will provide switch closure to signal the alarm detection circuit of a fault condition. In addition, this circuit will p
4、rovide a supervisory current loop which provides for operational confidence in the remote sensor circuit. Alarm switchboards shall include provisions for remote audible and visual indication of alarm conditions in addition to the central displays. Salient characteristics. 1. Type IC/SM Alarm Switchb
5、oards shall be composed of an ICJSM alarm panel, such as shown in Figures 1 thru 8, and IC/M alarm modules mounted within the alarm panel. 2. General requirements Integral Components. a. Power requirements. The alarm switchboards shall be designed for operation from a normal source of power conformi
6、ng to Type I, 115 V, 60 Hz, 1 phase. A rectifier shall be provided to supply power for the line circuits, lamp flasher , ground detector lamps and pilot lamp. The supervisory voltage shall be 5 +1/-0 Vdc, full wave, rectified (unfiltered) . Beneficial comments, recommendations, additions, deletions,
7、 clarifications, etc. and any other data which may improve this document should be sent by letter to: Commander, Naval Sea System Command, Attn: 03R42, 2531 Jefferson Davis Highway, Arlington, VA 22242-5160. AMSC N/A FSC: 6320 DISTRIBUTION STATEMENT A. Approved for public release; distribution is un
8、limited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A- 50623 A-A-50623 m 9999974 O365273 37 m * FIGURE 1 - IC/SM-4 4 LINE SWITCHBOARD 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_ A-A-506
9、23 9999974 0365274 753 = asbestos compounds: and asbestos-filled molding compounds Lithium and lithium compounds Magnesium or magnesium alloy Zinc or Zinc alloy Carcinogens Radioactive material Polychlorinated Biphenyl (PCB) Polyvinyl Chloride (PVC), except where used for component leads Mercury or
10、its compounds and amalgams Cadmium c. Preservation. All parts shall be of suitable corrosion resistance material or materials treated in a satisfactory manner to render them adequately resistant to corrosion caused by sea water. d. Painting. Sheet metal and cast enclosures shall be completely painte
11、d, in accordance with the ordering data, in accordance with best commercial practices utilizing latex or epoxy based paints. Composite enclosures (if used) normally shall not be painted. e. Temperature and humidity. Alarm switchboards and alarm modules shall operate without mechanical or electrical
12、damage in any ambient temperature between the limits of O and 50“ C (Centigrade) and with a relative humidity of 95 percent. f. Shock and vibration. For naval procurement all switchboard units shall satisfactorily withstand, without mechanical or electrical damage, Grade (BI, Type A, Class I, Light
13、Weight shock in accordance with MIL-S-901, and vibration testing in accordance with MIL-STD-167, Type 1, Vital. g. Electromagnetic Interference (EMI). For naval procurement switchboard units shall satisfactorily meet the requirements of MIL-STD-461 as demonstrated following the procedures of MIL-STD
14、-462. h. Reliability. IC/SM Alarm Switchboards and IC/M Alarm Modules shall have a Mean Time Between Failure (MTBF) of at least 30K Hours. 3. IC/M Alarm Module. Each remote sensing device in an alarm circuit shall be monitored by a type IC/M module, constructed in accordance with FIGURE 9. Each modu
15、le shall include one set of electrically isolated, normally open contacts which shall close on alarm condition. They shall be suitable for making and breaking an external resistive load of at least 3A at 28 Vdc and shall not be in the completed circuit when the module is operated in the test mode. U
16、pon closure of an alarm sensor, momentary or otherwise, each module shall latch-in and shall not clear even if the alarm sensor re-opens. The switch shall have to be moved to the STANDBY position in order to silence the audible alarm. An alarm condition cleared indication shall be given in the STAND
17、BY switch position alerting the operator to return the switch to NORMAL. a. Moisture proofing. All electronic PC board components shall be conformal coated to ensure operability in a moisture laden environment. b. Weight and size. The maximum weight of the IC/M Module shall not exceed 0.500 Kg nor t
18、he size shown in FIGURE 9. 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- A-A-50b23 W 99999Li OLb5282 82T = A- A- 5 O 62 3 4. IC/SM Switchboard. a. Alarm section. The common alarm section shall have the following parts mounted on or in the face
19、of the panel: “me IC/SM Audible speaker. Module lamp dimmer control. Ground lights (two). Switchboard identification plate. Silent alarm switch. Silent alarm lamp. Main power fuse indicator. Extension alarm blown fuse indicator b. Ground Indicators. The ground indicators shall sense an absolute grou
20、nd between the terminal board and the enclosure, with one light connected to indicate a positive ground, and the other connected to indicate a negative ground. c. Supervisory current. A continuous supervisory alarm current, not to exceed 1.2 milliamperes (ma), shall flow through each alarm line modu
21、le. The circuit for the determination of the normal supervisory current shall include a current limiting resistor, installed in the most electrically remote sensing device in the circuit. A single line alarm module shall trigger a supervisory alarm for supervisory current at 0.1 ma, +0.2 ma/-0.05 ma
22、, but no supervisory alarm shall be generated above 0.3 ma. The module shall trigger a normal alarm for 4.0 ma and higher current flow. d. Enclosure. All switchboards shall be enclosed in a dripproof metal, or composite, cabinet. Each panel shall be arranged to hinge out from the left side, such tha
23、t all parts shall be accessible from the front of the cabinet. Terminal strips for connecting the ship cables shall be provided in the rear of the enclosure. All flexing cables to hinged panels shall be designed with a maximum amount of slack to distribute bending over the longest practical length o
24、f cable. The type of conductors, and the method of cabling the conductors shall be specifically designed for flexing service. Electrical connectors for the sensor lines shall be capable of accepting a bare wire connection from the sensor, without requiring the use of plugs or pins. shall be as indic
25、ated in TABLE I. e. Weight and size. The maximum weight and size of IC/SM Alarm Switchboards 5. SWITCHBOARD LABEL PLATE. A permanently installed information plate, as illustrated in FIGURE 10, shall be provided on the front of each switchboard in a readily apparent location to identify for an operat
26、or the following visual displays and audible outputs of the switchboard. Lights, when required to flash, shall flash at approximately 80 times per minute. a. Normal (No-alarm condition). Upper light on steady, lower light out. (Switch in normal position). b. Alarm condition. Upper light flashing, lo
27、wer light out with circuitry completed for wailing audible tone. (Switch in normal position) C. Standby (alarm condition existing). Switch turned to standby (30 Upper and lower lights on steady, degrees right from NORMAL position). audible tone circuit open. d. Standby (Switch in STANDBY position wi
28、th alarm condition cleared). Upper light out, lower light flashing, circuit completed for wailing audible tone. (Operator shall return switch to normal position to silence the audible tone). 11 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-5062
29、3 TABLE I IC/SM ALARM SWITCHBOARD CONFIGURATIONS Mode 1 WING CORP. DRAWING NUMBER 3448-120 IC/SM- 10 3455-210 IC/SM-2 O 3455-220/270 IC/SM- 3 O 3455-230 IC/SM-40 3455-240 IC/SM- 50 3455-250 IC/SM-60 3455-270 IC/SM- 8 O 3455-230/280 IC/SM-100 34 55 -240 /2 90 IC/SM-120 I 3455-250/300 DYNALEC CORP. MA
30、XIMUM DIMENSIONS DRAWING NUMBER WIDTH HEIGHT DEPTH WEIGHT (Cm) (Cm) (Cm) (Kg) 62404-200 38.1 35.6 23.8 12.0 e. Supervisory failure. Upper light out, lower light on steady, the circuitry completed to steady audible tone. (Switch in normal position). To silence audible alarm, the operator shall switch
31、 to cut- out position. f. Cut-out. With the switch in the cut-out position (30 degrees left from NORMAL position, both sides of the line shall be opened and the upper light shall be out and the lower light shall be on steady. Audible tone circuit shall be open. g- Teet condition. With the switch in
32、the test (60 degrees left from NORMAL) position, the line resistor shall be shorted out for testing operation of the switchboard. The indications shall be the same as 5.b. h. Power failure. Upper and lower lights shall be out. (The module shall have no function to establish connections for an audibl
33、e alarm, but the switchboard shall make connections for a pulsating, yelping sound). 6. Mounting. Type IC/SM, switchboard cabinets shall be arranged for bulkhead mounting equivalent to that shown in Figure 11. Mounting dimensions shown are maximum allowable. 12 Provided by IHSNot for ResaleNo reprod
34、uction or networking permitted without license from IHS-,-,-7 31.75 r A-A- 50623 4.06 1.52 I I 3.05 1 O1 .60 .-A 1 a52 NEOPRENE GASKET 2.03 4 PANEL -E 60 12.70 -E t IIIID- I P.C. BOARD I TPIN “A” 7 76.20 IIC I i- ?- T- I .138-32 UNC-2A CAPTIVE SCREW 2 PLACES NOTES : 1. ALL DIMENSIONS ARE IN MILLIMET
35、ERS, EXCEPT FOR CAPTIVE SCREWS. 2. UNLESS OTHERWISE SPECIFIED HEREIN, TOLERANCES SHALL BE AS FOLLOWS: TWO PLACE DECIMALS: f .o2 THREE PLACE DECIMALS: f .O05 3. SEE CUSTOMERS ORDER FOR LEGEND REQUIREMENTS. INFORMATION TO BE PROCESSED ON PHOTO SENSITIVE MYLAR (ETCHED TYPE). 13 Provided by IHSNot for R
36、esaleNo reproduction or networking permitted without license from IHS-,-,-A-A-50623 9999974 OLb5285 539 R FLASH R ,El A-A- 50623 1 VISUAL DISPLAY AND AUDIBLE OUTPUT E FLASH R is SIGNALS S I LENT a WAIL al S I LENT WAIL SILENT al STEADY SWITCH SETTINGS-DESCRIPTION NORMAL UPPER LAMP ON STEADY: LOWER L
37、AMP OFF: NO AUDIBLE TONE. NORMAL (ALARM OR TEST) UPPER LAMP FLASHING: LOWER LAMP OFF: WAILING TONE STANDBY (ALARM 1 STEADY: NO AUDIBLE TONE. UPPER AND LOWER LAMPS ON STANDBY (ALARM CLEARED) UPPER LAMP OFF: LOWER LAMP FLASHING: WAILING TONE. CUT-OUT UPPER LAMP OFF: LOWER LAMP ON STEADY: NO AUDIBLE TO
38、NE. NORMAL (SUPV FAILURE) UPPER LAMP OFF: LOWER LAMP ON STEADY: STEADY TONE. POWER FAILURE UPPER AND LOWER LAMPS OFF: PULSATING TONE. FIGURE 10 - INFORMATION PLATE STEADY AND FLASHING DISPLAYS ON THE MODULE UPS, WITH AUDIBLE COBMON ALARM SIGNALS, INDICATE THE STATUS OF EACH REMOTE SENSOR. 14 Provide
39、d by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- A-A-50623 9999979 OLb528b 475 = A-A- 50623 MOUNTING INFORMATION r-l 110. PANEL OPENING 4 RACES I CISU-I o THRU IC/SU-50 - 222 - 19 - I A8 013 YOUNTING HOLES 8 PLACES ALARM SWITCHBOARD IC/SM-10 THROUGH IC/SU-5
40、0 SWITCHBOARD UOUNTINC DIWNS IONS A B C SIZE IC/SU-10 38 1 432 483 I C/SY-40 743 794 845 ICISU-20 502 552 603 IC/SM-30 622 613 124 IC/SY-50 864 91 4 965 I UEY A -HEIGHT ff CmINET B DISTANCE BETWEEN RAIL YIUNTING HOLES C OYERALL HEIGHT ALARM SWITCHBOAR0 IC/SYdO THROUGH IC/SM-IZO SWITCHBOARD UOUNTINC
41、OIENSIONS A B C SIZE I C/SU-60 502 552 IC/SM-120 864 914 953 I C/SU-80 622 673 IC/SM-100 743 794 832 NOTES: 1. ALL OIYENSIONS ARE IN NILLEMETERS IC/SMdO THROUGH IC/SM-120 ARE FACTORY-MOUNTED SIDE-BY-SIDE ON A FRAME FOR BULKHEAD MOUNTING. FIGURE 11 - IC/SM SWITCHBOARD 15 Provided by IHSNot for Resale
42、No reproduction or networking permitted without license from IHS-,-,-A-A- 50623 Quality assurance Rrovisions. 1. Contractor certification. The contractor shall certify and maintain substantiating evidence that the product offered meets the salient characteristics of this Commercial Item Description
43、and that the product conforms to the producers own drawings, specifications, standards and quality assurance practices in accordance with ANSI/ASQC Q-92 (IS0 9002), and ANSI/ASQC 4-93 (IS0 9003). The government reserves the right to require proof of such conformance prior to the first delivery and t
44、hereafter as may be otherwise provided for under the provisions of the contract. 2. Regulatory requirements. The offerer/contractor is encouraged to use recovered materials in accordance with Public Law 94-580 to the maximum extent practicable. Switchboard equipment shall not expose personnel to tox
45、ic substances in excess of the threshold limit values in accordance with ACGIH ISBN 0-936-712-39-2. 3. Preservation, packaging, packing, labeling, and marking. The preservation, packaging, packing, labeling, and marking shall be as specified in the contract or order. Notes. 1. Supersession. This Com
46、mercial Item Description governs procurement of IC/SM switchboards, which were previously a part of MIL-A-l7196(SH). Procurement of all other components described in MIL-A-17196E (SH) shall be in accordance with that document or its applicable successor. 2. Identification numbers. The following part
47、 identification numbering procedure is for government purposes and does not constitute a requirement for the contractor. A-A 50623 IC/SM-20 Example of switchboard identification number. II I 20 = Maximum circuit capacity of the switchboard. CID number Designate Commercial Item Description 3. Orderin
48、g data. Procurement documents should specify the following: a. IC/SM Alarm Switchboard configuration. b. Manufacturers name and catalog identification number if required c. Finish color. (Composite switchboards will require tinting) d. Required delivery date. CIVIL AGENCY COORDINATING ACTIVITIES: COMMERCE - NIST GSA-FSS Preparing Activity: Pro ect (6320-NO38 Navy - SH 16 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
