Relay and Searchlight Signal Testing


FRA Rules That Apply

Satisfy Requirements of FRA Signal Rules With Our Test Equipment
Rule # Rule Description S & C Equipment
234.255 Gate Mechanism Hold-Clear Test Model 331 or 330-4 Relay Slides
234.263 Relay Tests Model 331 or 330-4 Relay Slides
236.102 Semaphore & Searchlight Model 331 or 330-4 Relay Slides
Signal Mechanism Tests 330 Series SL Sig. Test Adapters
236.106 Relay Tests Model 331 or 330-4 DC and 332 AC Relay Slides


Shortcut to Specific Products


Notes on Calibration

Today's quality-driven railroad respects the need for annual calibration of test equipment, and budgets accordingly. S&C Distribution Company, appreciates the requirement, but does not agree that it is an expense that must be absorbed every year. In our effort to better serve our customers we have done something about calibration.

First of all, our modern meter equipment is designed and built to be more stable than those devices configured around earlier technology. Secondly, because we know the environment in which our products are used, we protect our test equipment from some of the "screwdriver lightning" that causes meters to lose calibration. Thirdly, in the case of our Relay Slides we provide guidance that allows you to confirm calibration rather than require your relay tester be sent in for service on the chance that it is out of calibration.

Why should you absorb the cost of paying for the calibration service itself, the cost of shipping the Slide back and forth and the cost of maintaining swing units to insure that testing schedules are met? You do not have to absorb these costs if you follow our Calibration Check Procedures for our 330, 331 and 332 Relay Slides. Contact us for further details.


331 DC/AC Slide

The 331-1 DC/AC Relay Slide is another example of S&C responding to customer feedback. Our 331-1 DC/AC Relay Slide embodies all the recommendations we have received regarding relay slide design over the last thirteen years. Most importantly, this Slide can work with a 10-16 volt DC source to slide DC signal relays and a 10-16 volt AC source to slide AC PO relays, or similar (it cannot be used to test AC vane relays). Other design changes include a "Charge Relay" or coil saturation push-button that sidesteps the need to rotate the testing pot through its full range to saturate the relay coil under test, a resistant Testing Pot that makes fine adjustment easier, 2 amp output standard and further ruggedized internal circuitry. For those who use the 1.2AH battery for a test voltage source, we revised the configuration of the Slide case so that the battery retention Velcro straps are at the bottom of the case, which makes the battery a stabilizer if you choose to stand the Slide up on a shelf or table when doing your testing. Appropriate accessories have been added for the AC test capability. Lastly we have developed a "build-it-yourself" ordering reference scheme so that you can create an ordering reference to exactly match your accessory needs.

Features retained include the size of the unit (with all the additions, it is still the same small, compact size), the volts and amps readouts in separate, simultaneous, displays, a single testing pot, etc.

ORDERING REFERENCES
Description Part Number
Model 331 DC & AC Relay Slide, Output 2.0A, 10-Turn Pot 331-1
In-Unit Battery Kit, 1.2AH, Charger 330-24
Plug-In Battery Pack, 3.0AH, Harness, Charger 330-23
AC to DC Power Supply, 13.5VDC, 2.4A max output w.12 ft. cord 330-11
AC Wall Adapter, 120VAC to 12VAC, 5A max output w.8 ft. cord 331-11
Accessory Case for carrying various chargers, power supplies, etc. 330-32
Heavy Duty, Zippered Bag to carry Slide, all Accessories 331BZB
Shoulder Harness for Model 331 Slide 324-20
Replacement, Standard Batt Leads 330-15
Replacement, Standard Relay Leads 330-16


Ordering Reference Table

Use of this table allows the development of a single ordering reference that will include your Slide preference, as well as all of the accessories you deem necessary. Use the reference for the basic Slide and add the accessory references to it. A sample ordering reference can be found in the next paragraph of this introduction. The numbers listed in the "Part Number." Column can be used to order individual items.

Sample Ordering Reference: DC/AC Relay Slide, with 1.2AH Battery Kit, 120 to 12 VAC Wall Adapter, In-Vehicle Charger, Long-Reach Probes, Searchlight Signal Testing Adapter for H2 Mechanism, Shoulder Harness and Heavy Duty Canvas Carry Bag would be : 331-1-B1-B5-C2-D2-D5-E1-E4.

I. Basic Slide, Case and Leads

ORDERING REFERENCES
Reference Description Part Number
331-1 DC/AC Slide, 2.0-A, Case and Relay and Power Leads 331-1


II. Power Source Options (Pick Requirements)

ORDERING REFERENCES
Reference Description Part Number
B1 1.2AH Battery and Charger Kit 330-24
B2 3.0AH Battery, Pack, Belt & Charger Set 330-23
B3 7.5AH Battery, Pack, Belt & Charger Set 330-10
B4 120VAC to 12VDC Power Converter 330-11
B5 120VAC to 12VAC Wall Adapter 331-11


Model 331-11

 120VAC to 12VAC low voltage output for testing power off relays. Can be used with 331 DC/AC and 332 AC Relay Slides. Unit is fuse protected. AC power supply for testing PO relays.












III. In-Vehicle Chargers (Pick Requirements)

ORDERING REFERENCES
Reference Description Part Number
C1 In-Vehicle Charger, Unregulated, for B2, B3 7500-100-25
C2 In-Vehicle Charging Adapter, for B1 324-12


IV. Testing Accessories (Pick Requirements)

ORDERING REFERENCES
Reference Description Part Number
D1 Adapter for plug-in relays tested out of the rack 330-18
D2 Long-Reach Probes/Leads Set 330-19
D3 Current Checking Tab for US&S plug-in relays 330-33
D4 Adapter f/plug-in PO relays (Silicon & Selenium rectifiers) tested out of the rack 331-18


V. Searchlight Signal Testing Adapters (Pick Requirements)

ORDERING REFERENCES
Reference Description Part Number
D6 SL Signal Testing Adapter Kit f/H2 Mechanism 330-25
D7 SL Signal Testing Adapter Kit f/H5 Mechanism 330-27
D8 SL Signal Testing Adapter Kit f/SA & SA1 Mechanisms 330-30
D9 SL Signal Testing Adapter Kit f/SC Mechanism 330-31
D10 Protective Carrying Case f/D6, D8 & D9 324-19
D11 Protective Carrying Case f/D7 330-32


V1. Parts to Build Non-Standard SL Signal Test Adapters (Pick Requirements)

ORDERING REFERENCES
Reference Description Part Number
D6A SL Slide Adapter, Normal Proceed 330-26-1
D8A SL Slide Adapter, Reverse Proceed 330-26-2
D6B SL Signal Adapter, US&S H2 330-25-1
D7A SL Signal Adapter, US&S H5 330-27-1
D8A SL Signal Adapter, GRS SA & SA1 330-30-1
D9A SL Signal Adapter, GRS SC 330-31-1
D11 Interconnect Cable, DB-9 6ft. 500A-2-6A


VII. Miscellaneous Accessories(Pick Requirements)

ORDERING REFERENCES
Reference Description Part Number
E1 Shoulder Harness f/Slide 324-20
E2 Reflective Safety Sleeve f/B2 & B3 Battery Packs 7500-100-30
E3 Accessory Case f/Chargers, Power Adapters, etc. 330-32
E4 HD Zippered, Canvas Bag to Carry Slide, Accessories 331BZB


331-18 Adapter for Testing Plug-In PO Relays

 Because there are a variety of rectifiers used with PO relays, there is a need to simulate their different characteristics. Testing a PO relay out of the rack with a rectifier of a configuration different rom that used to determine pick and drop characteristics, originally, can produce test results that are considerably different from the values on the relay label. This Adapter allows you to toggle between simulators of the two basic types of rectifiers (Silicone and Selenium) because you will not know what type of rectifier was used to determine the pick and drop values. You have a 50-50 chance of guessing wrong. One way or the other you have a way of quickly getting valid test results. Works with both the 331 and 332 Slides.

ORDERING REFERENCE 331-18


330 Series DC Signal Relay Slides

 "Railroad rugged" smallest comprehensive signal relay tester. Volt and ohmmeter provide simultaneous readouts. Include polarity reversing switch and LED "power-on" indicator. Two models: 2.0A max. output 3-turn and 10-turn pots. Come in padded case with leads (relay test and local battery). Optional equipment includes: battery packs, AC to DC power supply, in-vehicle chargers, adapter for use with plug-in relays out of the rack, long-reach probes for use with plug-in relays in the rack, searchlight signal testing adapters and shoulder harnesses.

ORDERING REFERENCES
Description Part Number
Slide 2.0A, 10-Turn Pot 330-4
Slide 2.0A, 3-Turn Pot 330-4A
Replacement, Standard Batt Leads 330-15
Replacement, Standard Relay Leads 330-16




Model 332 AC Signal Relay Slide

 Primarily for use in testing PO relays. Low-voltage AC relay tests can be made with this tester from a switch-selectable straight AC output or an AC output routed through an internal bridge rectifier. The rectifier output enables testing of Safetran plug-in PO or PT relays out of the rack without having to rig an alternative rectifier. Tests of Safetran relays require our 330-18 Adapter (see below). Tests of GRS/Alstom plug-in PO relays require adapter PN: 332-18 (see below). Relay Slide comes with relay-connect leads AC power cord and zippered, padded case.

ORDERING REFERENCES
Description Part Number
Model 332 AC Relay Slide 332-2
Replacement, Standard Relay Leads 330-16









Model 331-11

120VAC to 12VAC low voltage output for testing power off relays. Can be used with 331 DC/AC and 332 AC Relay Slides. Unit is fuse protected.


ORDERING REFERENCE 331-11







330-18

 Makes out-of-the-rack testing of plug-in track and line relays faster and easier. With the 332 AC Relay Slide, permits the testing of out of the rack, of plug-in PO relays with silicon rectifiers. There is no need to rig up a rectifier.

ORDERING REFERENCE 330-18






332-20 Test Equipment Power Adapter

 To operate correctly, the Model 332 AC Relay Slide requires an AC voltage that provides a true sine wave, 50-60Hz. Most, if not all, vehicle-mounted inverters provide a square wave output, which will cause damage to our AC Slide that will require shop repair. Many older signal locations are not equipped with standard outlets, although the 120 or 240 VAC power is in the case. Our 332-20 Test Equipment Power Adapter allows the user, using good safety practice including opening the incoming 120/240 circuit before connecting the Adapter, to power any S&C Slide (AC or DC) or Megohmmeter from the existing commercial power.

Unit comes with three leads for connecting the Adapter to 110VAC or 220VAC commercial power; a lighted power-available indicator, a nylon cleat to corral the leads when they are not in use and a carrying handle for easy transport.
ORDERING REFERENCE 332-20




330-19 Long-Reach Test Probes

 Long-Reach Probes and Leads offered by S&C Distribution Company, permit the user to slide GRS/Alstom and Safetran Plug-In Relays from the front, as long as both positive and negative terminals are accessible. Can be used with any meter that is equipped with standard banana jacks, five-way terminals, etc. Probes are 8.5 in. long and each is equipped with a 3.0A, fast-acting fuse. Leads are 8.0 ft. long with silicon insulation featuring an operating temperature range of -58 deg. F to +356 deg F.

ORDERING REFERENCE 330-19



330 Series Searchlight Signal Test Adapters

 Our 330 Series DC Relay Slides have long been used to test Searchlight Signal Mechanisms for proper motion and proper pick and drop values. Our Testing Adapter Kits are comprised of three main components, as the photo indicates (Shown is the 330-25 Adapter Kit for H2 Signal Mechanisms). Those components are Slide Adapter, Signal Adapter and an Interconnect Cable. Can be used on plug-in or hardwired searchlight signals.

ORDERING REFERENCES
Description Part Number
Testing Adapter for H2 330-25
Testing Adapter for H5 330-27
Testing Adapter for SA, SA1 330-30


330 Series Right Angle Test Leads

 Lead sets in popular configurations. Come with either alligator or battery clip connectors, right angle plugs. Wire is No. 18 Test Lead wire with silicone insulation for flexibility in low temperatures. For reliability and durability, insulation is mechanically restrained and the wire itself is soldered to the clip connection point. Leads are sold in sets of two (one red, one black).

ORDERING REFERENCES
Description Part Number
Lead Set, 5 ft, with No. 48B Battery Clip 330-15
Lead Set, 8 ft, with No. 48B Battery Clip 330-37
Lead Set, 8 ft, with No. 60 Alligator Clip 330-16