Siemens OQR Duplex Installation, Operation & Maintenance Instructions Manual Download Page 21 | Manualshive

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Courtesy of NationalSwitchgear.com

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Summary of Contents for OQR Duplex

Page 1: ...SIEMENS Type QR Metal Enclosed Load Interrupter Switches 5 kV and 15 kV Instructions Installation Operation Maintenance SG 3428 Courtesy of NationalSwitchgear com ...

Page 2: ...ions are not taken Qualified Person Warning For the purpose of this manual and product labels a qualified person is one who is familiar with the installation construction and operation of the equipment and the hazards involved In addition he has the following qualifications a Is qualified and authorized to energize de energize clear ground and tag circuits and equipment in accord ance with establi...

Page 3: ...ion Final Testing 6 18 8 19 9 20 9 9 Warranty Warranty 21 10 NOTE These instructions do not purport to cover all details or variations in equipment nor to provide for every possible contingency to be met in connection with installation opera tion or maintenance Should further information be desired or should particular problems arise which are not covered suf ficiently for the purchaser s purposes...

Page 4: ...endesignedto operate within the limits specified on the rating label If for any reason the equipment is later used in a different system or if the short circuit capacity of the system is increased the momentary rating of the switch the interruption capacity of the fuses and the bus capacity must be checked kV Amperes Bll kV Maximum Cont Int Momentary Fault Closing 4 76 600 _ 600 40 000 61 000 80 0...

Page 5: ...e interrupter is identicalto single feeder units andinterrupts its rated load current The disconnect is mounted in the rear of the compartment and is operated from the front of the unit The cubicles are securely blocked and braced for shipment They are crated boxed or covered depending on shipping conditions Whatever the method of shipment every precau tion has been taken to insure safe arrival of...

Page 6: ...sit Also check the shipping manifest to be sure all items have been received If any damage or shortage is detected note this on the freight bill and contact the carrier immediately Storage If the switches will not be installed immediately uncrate inspect and store in a clean dry place Before placing in storage inspect and grease unfinished steel surfaces etc to prevent rusting Protect mechanism co...

Page 7: ...eed to Step 4 if no crack exists proceed to Step 5 4 If a gap larger than 13 3 30 mm appears at joints it will be necessary to level and plumb all equipment and not try to draw equipment together by bolting since this is apt to disturb cubicles which in turn may cause malfunc tions Check plumb on all equipment to determine which is causing the problem Once this has been determined use suitable shi...

Page 8: ... above floor line Customer conduit not to extend more than 8 0 above floor line 2 63 4 50 Location of suitable anchor bolts Bolts furnished by customer 63 dia holes furnished In front and rear flange Floor Line A Floor Line s Suitable anchor bolts furnished by customer 63 die holes furnished In floor of cubicle V Outdoor Bolting Arrangement H V Switch OQR Methods of Anchoring Indoor Foundation sho...

Page 9: ...ording to the dimensions shown on the general arrangement 5 Connect cable to the transformer Figure 8 6 Slide angle up to contact the bottom edge of the throat flange 7 Slide the center cover over the transformer throat and reassemble 8 Replace the top cover 9 For Outdoor applications caulk the vertical seams be tween the covers and the switchgear Precut factory installed cables with suitable cabl...

Page 10: ...111 70 04 50 42 04 Transition Section Transformer Figure 9A Indoor Upfeed Cable Connections to Switch Rear Access Lugs Figure 8 Cable Connection to Liquid Immersed Transformer V V Potheads LIS Fuses 5 Transformer h 22 00 H 38 00 90 00 v Potheada 14 00 R 80 70 04 4204 Figure 9B Rear Access Potheads Figure 9C Rear Access Downfeed Lugs Courtesy of NationalSwitchgear com ...

Page 11: ...ure 11 and customer s cable con nections to 15 kV potheads Figure 12 15kV 7 178mm 5kv 5kv 15kv When insulated supports for incoming cable are furnished lash cables securely to the horizontal supports EPR rubber tape will be supplied as the insulation material Proceed as follows Remove the holland backing from the mastic pads and apply 1 pad over nuts and one pad over screw heads Press and mold in ...

Page 12: ... made before placing equipment in service Check the following points 1 High voltage connections properly installed 2 Electrical disconnecting contacts machined parts operating mechanism etc checked for lubrication and operation 3 Blockings supports and temporary ties removed from switches instruments relays etc 4 Proper fuses correctly placed 5 Temporary wiring jumpers used on the secondaries of c...

Page 13: ...ading of 200 MEGOHMS when tested with a 1000 volt MEGGER should be obtained before energiz ing the equipment with primary power 2 A dielectric test on the hign voltage circuit for one minute at one of the following voltages corresponding to the rated voltage of the equipment should be made A dielectric test on secondary and control circuits is made at 1130 volts The above test voltages are in acco...

Page 14: ...os ing and quick break rated load interruption The switch mechanism shaft is driven by a chain and sprocket from the front operating handle As the handle is rotated it is directly connected to a sprocket which in turn chain drives the opening spring to a charged position As the operator continues to rotate the handle the charged spring is driven off center by the chain and releases its energy into...

Page 15: ...down and door open A Handle L Shaft Spring Provision for Mounting Lower Key Interlock Main Door j Front View of Panel Figure 14 Lead Interrupter Switch Operator Mounting Panel Side View Handle Operator Sprocket B Pin Trapped Behind Shaft when Switch in Closed Position Front View of Panel Side View When the main door is closed the interlock 1 assembly is rotated to unblock the operator handle sproc...

Page 16: ...tential Transformers e Control Power Transformers f Other sources of electric power g The outgoing and or incoming distribution system Consider this equipment alive until all sources of voltage are removed and safely grounded Dangerous voltages are present in the equipment which can cause severe per sonal injury and product failure Always de energize and ground the equipment before maintenance Mai...

Page 17: ...ovided when using any chemical cleaner Discard and replace any insulators show ing signs of treeing or tracking Front Handle Housing 24 Chain Enclosure Chain as Required 40 Vi Pitch Operating Handle Sprocket Insulation Check Figure 15 Components of the Chain Drive When making a periodic check all insulation should be carefully examined for tracking Special attention must be given to areas where th...

Page 18: ...Up position and hold it in this position See Figure 15 Connect chains and turn buckles until chain tension is even and fairly tight 1 2 deflection Move handle back up into its locked closed position h CAUTION Be sure to tighten the nut on the turnbuckle after adjusting Switch Alignment If the switch is being overhauled or major components are being replaced follow these steps for proper switch ali...

Page 19: ...ed to give top performance when installed in normal indoor or outdoor locations Where abnor mal conditions such as corrosive atmospheres are en countered special precautions must be taken to minimize these effects Exposed metal surfaces of non msulated bus bars disconnect switches wire ends instrument terminals etc must be protected Lubricate contact surfaces with a generous coat of Siemens Contac...

Page 20: ...overs and canbe changed without opening the main access door Filters can be cleaned or replaced by squeezing them into or out of the bottom opening in the cover See Figure 26 Figure 23 Checking for Arcing Blade Clearance Figure 25 Space Heater Location Figure 24 Arcing Blade Adjusting Screw Space Heaters and Vent Filters Outdoor equipment is furnished with a space heater as stand ard Where humid c...

Page 21: ...ch not of adequate current carrying capacity Increase the capacity of the connections by adding conductors or by replacing with heavier conductors Contacts should be dressed and fitted properly Tighten all bolts and nuts Too much pressure must not be used in tightening nuts on bolts The use of too large a wrench may cause such excessive pressure that the expansion of the bolts exceeds their elasti...

Page 22: ...Type EJO 1 Fuse Units Siemens part numbers can be determined by reference to drawings applied with the unit Fuses Expulsion Item Style Number Note 1 Note 1 Qty Fuse Holder Fuse Refills 1 Touch Up Spray Paint 3 Style Number 18 168 000 001 18 168 000 002 18 168 000 003 Qty 12 oz 355 ml 12 oz 355 ml 12 oz 355 ml Item Fuses C L Light Gray No 61 Dark Gray No 24 Sky Gray No 70 Recommended quantities app...

Page 23: ...390 125 125 175 175 100 100 100 125 50 50 65 65 80 50 50 50 50 500 1079 25 200 200 125 80 100 175 125 200 65 100 100 50 80 50 40 65 40 12 5 269 25 12 470 125 200 250 50 100 25 65 40 80 50 65 100 175 100 125 200 40 80 539 25 0 250 125 200 200 80 100 175 100 125 50 80 50 65 100 747 65 40 34 6 25 40 200 200 150 125 100 125 100 125 50 80 50 65 100 80 40 65 40 311 25 144 200 200 150 125 100 125 100 125...

Page 24: ...SIEMENS Siemens Energy Automation Inc Electrical Apparatus Division P O Box 29503 Raleigh NC 27626 919 365 6660 SG 3428 8 90 PRINTED IN U S A Courtesy of NationalSwitchgear com ...

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