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26

    S&C Instruction Sheet 761-505

Installation

(d)  Move the blade in the 

opening

 direction and 

verify each blade shunt contact fi rmly engages 
its respective interrupter housing before the 
blade contacts disengage from the stationary 
main contact assemblies. See Figure 34. The 
shunt contacts may be bent as required to 
conform to these conditions.

(e)  Also, as the blade assembly moves in the 

opening 

direction, the two blade-opening cams must 
simultaneously make positive engagement with 
their respective interrupter opening levers, as 
shown in Figure 35. Simultaneity is essential to 
ensure both interrupters share the interrupting 
duty. The opening lever on one or both 
interrupters may be bent slightly to attain 
opening simultaneity.

(f)  After opening the blade fully, 

slowly 

close the 

blade and verify the two opening cams do not hit 
the interrupter opening levers. See Figure 35.

Figure 34. The blade assembly moving in the opening direction.

Figure 35. Verifying the blade opening cams do not hit the inter-
rupter open ing levers on closing.

Interrupter opening lever

Blade-opening cam

Interrupter 

opening 

lever

Blade 

opening 

cam

Содержание Alduti-Rupter

Страница 1: ...s 2 Read this Instruction Sheet 2 Retain this Instruction Sheet 2 Proper Application 2 Warranty 3 Warranty Qualifications 3 Safety Information Understanding Safety Alert Messages 4 Following Safety In...

Страница 2: ...or such qualified persons They are not intended to be a substitute for adequate training and experience in safety procedures for this type of equipment Read this Instruction Sheet NOTICE Thoroughly an...

Страница 3: ...are those stated in Price Sheet 150 or Price Sheet 153 and THERE ARE NO EXPRESS OR IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ANY EXPRESS WARRANTY OR OTHER OBLIGATION PR...

Страница 4: ...ecautions are not followed NOTICE NOTICE identifies important procedures or requirements that can result in product or property damage if instructions are not followed Following Safety Instructions If...

Страница 5: ...age Description Part Number A DANGER Electrocution Hazard G 6580 1 B WARNING Piercing Set Screws G 3176R1 C WARNING Handle Operation G 4400R5 D WARNING Electrocution Hazard Grounding Strap G 6596 This...

Страница 6: ...lothing in accordance with safe operating procedures and rules 4 SAFETY LABELS AND TAGS Do not remove or obscure any of the DANGER WARNING CAUTION or NOTICE labels Remove tags ONLY if instructed to do...

Страница 7: ...sections and one tubular fiberglass insulating section in the vertical operat ing shaft S4 Insulated interphase sections and one Cypoxy Insulator unit in the vertical operating shaft S6 Key interlock...

Страница 8: ...lly Closed position during installation of the interphase and vertical operating pipe sections S C recommends tying the switch blades to their jaw contacts with wire or a cable tie WARNING DO NOT lift...

Страница 9: ...tch poles and bell crank base s or bracket s from their crates and arrange them on the ground in the same order in which they will be mounted on the pole or structure Protect the bearings from contami...

Страница 10: ...g on the live parts Avoid allowing the switch poles to swing while lifting Lifting the switch by the live parts will damage the switch Rough handling may cause damage to the blades and contacts Failur...

Страница 11: ...ndue strain on the insulators and throwing the blades out of alignment resulting in difficulties operating the switch Use shims as required STEP 6 Lift or hoist the bell crank assembly including baseo...

Страница 12: ...ert the operating pipe section into the coupling and finger tighten the clamp bolt s 3 Adjust the operating pipe to the correct length Then tighten the clamp bolt s to final tightness 4 Tighten the pi...

Страница 13: ...nk is mounted outboard of the switch poles Install the pipe section connecting the driven arm of the bell crank to the nearest switch pole See Figure 12 If two bell cranks are used in a double offset...

Страница 14: ...ipe sections furnished is threaded at one end to accommodate the operating handle assembly See Figure 13 Install this section of pipe last with the threads at the lower end If only one vertical operat...

Страница 15: ...guide arm pointing upward at a 45 degree angle See Figure 15 A positioning stud is furnished that holds the rod guide at 45 degrees Follow the directions in Installing Pipe Couplings with Piercing Set...

Страница 16: ...es an S C Type AS 10 Switch Opera tor as signified by the addition of the standard minor modifica tion suffix S8 or S9 to the erection drawing number for 34 5 kV and 46 kV switches refer instead to S...

Страница 17: ...TEP 17 Fasten the free end of the grounding strap to the lowest vertical operating pipe section a few inches above the operating handle assembly with the U bolt connector provided for this purpose See...

Страница 18: ...shipping CAUTION The switch should be opened and closed slowly only when checking for alignment and complete closure When opening or closing the switch in service do not slow down or stop part way Ar...

Страница 19: ...oosen the clamp bolt on the low est rod guide or bell crank coupling and move the handle to a position less than 20 degrees from the Closed position Then torque the clamp bolt on the lowest rod guide...

Страница 20: ...n the locking disc on the operat ing handle See Figure 23 STEP 22 Block one of the two slots in the locking disc with the blocking screw provided The slot to be blocked depends on whether a locked ope...

Страница 21: ...sm should lie against its closed stop See Figure 26 c If none of the switch poles are fully closed the effective length of the vertical operating pipe may need to be increased Loosen the vertical oper...

Страница 22: ...poles are fully closed readjust the take up screw s on the adjustable pipe coupling s at the switch pole to increase or decrease the effective length s of the interphase operating pipe s See Figure 2...

Страница 23: ...Shorten ing the adjustable lever arm increases switch blade travel Then readjust for full operating handle travel as described on page 18 f Repeat this procedure shortening the adjustableleverarmofthe...

Страница 24: ...igure 31 NOTICE After readjusting be sure to retighten the locknut on each adjustable pipe coupling take up screw the clamp bolt and piercing set screw on the pipe coupling at the rod guide or bell cr...

Страница 25: ...assembly in the fully Closed position verify the minimum clearance between each blade shunt contact and its respective interrupter housing See Figure 33 The shunt contacts may be bent as required to...

Страница 26: ...ve engagement with their respective interrupter opening levers as shown in Figure 35 Simultaneity is essential to ensure both interrupters share the interrupting duty The opening lever on one or both...

Страница 27: ...tings to the stationary insulators See Figure 37 Shift the terminal base castings as required Tighten the terminal base casting cap screws and recheck for conformance to the conditions outlined above...

Страница 28: ...aluminum alloy body connectors the following procedures should be used a Thoroughly wire brush the current transfer surfaces of each connector and immediately apply a liberal coating of Penetrox A av...

Страница 29: ...king fault currents STEP 26 Remove the padlock from the locking bar on the operating handle assembly Withdraw the locking bar See Figure 39 a If the operating handle assembly is furnished withakeyinte...

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