General information on handling
and maintenance of
SDC
TM
Solid Dielectric
Capacitor Bushings
Electro Composites (2008) ULC Tel: (450) 431-2777 Web site:
http://www.hubbellpowersystems.com/about/ec/
Revision 3
February 21, 2012
Страница 1: ... information on handling and maintenance of SDCTM Solid Dielectric Capacitor Bushings Electro Composites 2008 ULC Tel 450 431 2777 Web site http www hubbellpowersystems com about ec Revision 3 February 21 2012 ...
Страница 2: ...on carefully and take the necessary steps to ensure that it accommodates your particular application and operating conditions The reader is requested to address any questions or concerns directly with ELECTRO COMPOSITES 2008 ULC technical staff for further information and instructions on proper installation use and maintenance of our bushings ELECTRO COMPOSITES 2008 ULC makes no warranty represent...
Страница 3: ...1 Power Transformer and Reactor Bushings Please refer to the bushing drawing for the applicable standard ELECTRO COMPOSITES 2008 ULC bushings consist of a central electrolytic copper conductor either solid core or draw lead type encapsulated in a monolithic solid rigid cycloaliphatic epoxy resin dielectric body External sheds are integral to the epoxy core eliminating all interfaces through the in...
Страница 4: ...If the measured value is greater than the limit indicated check the bushing installation and verify the resistance again or provide other means to ground the bushing to the equipment ELECTRO COMPOSITES 2008 ULC bushings are not supplied with a potential or voltage tap Never exceed 1000V when testing the bushings for capacitance and power factor measurements However test taps are insulated to 2000V...
Страница 5: ... your Electro Composites 2008 ULC representative prior to returning any material back to the factory RECEIVING Bushing crates are constructed with provisions for handling with forklift equipment Insure for sufficient support of crate as weight distribution within the crate is not balanced Reasonable care should be taken when opening the crate so as not to accidentally damage the bushing Crates are...
Страница 6: ...from the crate by several means The preferred and recommended method consists of using an eyebolt threaded into the central copper conductor at the top end termination Insure the eyebolt is fully threaded into the hole and tightened accordingly Alternatively an anchor shackle with the shackle pin attached through a flange mounting hole can be used As a last resort a non metallic choker rope or sli...
Страница 7: ...being manipulated Bushings may be top heavy or bottom heavy always keep a firm grip on the top end terminal of the bushing to keep it from pivoting from horizontal Do not subject the bushing to sudden shocks Slowly take up the slack in the attachment and then raise the bushing at a constant and steady rate Insure that the lifting chain or straps do not rub up against the insulation which may damag...
Страница 8: ...d values on the name plate can occur since nameplate values are obtained under controlled conditions at the factory Values measured at receiving should be used as a baseline to compare with future field measurements Only C1 power factor and capacitance have meanings for SDCTM bushings NOTE Electro Composites 2008 ULC recommends against measuring C2 power factor and capacitance of our bushings for ...
Страница 9: ...se refer to the bushing drawing for proper flange bolt tightening torque By using the proper tightening torque for the bolt size used and the tightening sequence provided flange damage and sealing problems from improper tightening and uneven pressure on the gasket can be avoided The use of a calibrated torque wrench is recommended Before tightening insure that the conductor terminal ends are free ...
Страница 10: ... terminal spring and contact washer exposing the contact pin Do not separate the terminal spring and contact washer from tap cap Once measurements are done replace the button and tighten by hand or with a wrench until the O ring is compressed and seats tightly against the flange body NAMEPLATE Every bushing is supplied with a nameplate located on the mounting flange Nameplate will provide all pert...
Страница 11: ... a hot spot which would be indicative of a bad or loose connection ONCE EVERY 3 TO 5 YEARS Perform the yearly maintenance check and cleaning Perform a Doble test for Power Factor and Capacitance Refer to the Doble M 4000 test set instructions Doble Bushing Field Test Guide and ELECTRO COMPOSITES 2008 ULC instructions for proper test procedures Refer to values measured at bushing receiving for base...
Страница 12: ...C SHOULD BE CONSULTED NO WARRANTIES WHETHER EXPRESS OR IMPLIED INCLUDING WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY OR WARRANTIES ARISING FROM THE COURSE OF DEALINGS OR TRADE USAGES ARE MADE REGARDING THE INFORMATION RECOMMENDATIONS DESCRIPTIONS AND SAFETY NOTATIONS CONTAIN HEREIN IN NO EVENT WILL ELECTRO COMPOSITES 2008 ULC BE RESPONSIBLE TO THE USER IN CONTRACT IN TORT OR ...
