TransNet NZ Limited HV Juice - August/September 2020

HV JUICE

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This Issue RFI & SEMI-CONDUCTIVE COATINGS PAGE 2 NEW CCT & ABC RANGE PAGE 4

11KV CRUCIFIX, REDESIGNED PAGE 6

K491 FUSE SWITCH DISCONNECT PAGE 8

DO YOU STRUGGLE WITH RFI? DO WE REALLY NEED A SEMI-CONDUCTIVE COATING ON CERAMIC POST INSULATORS?

by Goran Stojadinovic This paper looks into the efficacy of semi-conductive coatings on ceramic post insulators. Goran provides an overview of Radio Frequency Interference (RFI), its tendency to occur on pin insulators, and semi-conductive coatings that are used to prevent it, then turns his attention to the effect of these semi-conductive coatings on ceramic post insulators. He finds no evidence that these post insulators get RFI as pin insulators do, making RFI

GORAN

prevention via semi-conductive coating pointless. Furthermore, he presents case studies internationally and in NZ to support the theory that such coatings could instead have a detrimental effect on ceramic post insulators and conductors, reducing their service life through an increase in electrical stress and even potentially causing RFI. To read the complete paper please scan this QR code or go to https:// tinyurl.com/ semi-conductive coating

Why does New Zealand have radio silent glaze on post insulators when the rest of the world doesn't?

Our technical expert Goran investigates.

STOJADINOVIC MCE, MEng(El)

PRODUCT & INNOVATION MANAGER

We're extremely fortunate to introduce Goran Stojadinovic as TransNet's latest talented technical expert. He has worked in the electricity industry for thirty-six years both locally and internationally and brought a wealth of technical knowledge and practical experience to various engineering roles at several of NZ's large electricity network companies, recently as an Innovation & Technologies Manager and an Asset Engineer.

With a passion for innovations and new technologies Goran applies his engineering expertise and innovative technical solutions to solve industry problems. This approach is evident in the dozens of network improvements he has implemented and the two international patents he has obtained. He has written and presented nine Papers - two at EEA and seven at International Conferences, including the CEPSI International Conference in 2014 and in 2016.

Goran's multiple academic qualifications include a Master of Commercialisation and Entrepreneurship from the University of Auckland and a Master of Electrical Engineering from the University of Belgrade, Serbia. gorans@transnet.co.nz

Ph 0800 442 182 +64 9 274 3340

sales@transnet.co.nz

www.transnet.co.nz

• We have excellent stock holding in our Auckland warehouse

AIN IN

25

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• All TE porcelain insulators come with a 25 year warranty

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WHY YOU SHOULD CHOOSE TE INSULATORS!

T E POR

QUALITY INSULATORS - GUARANTEED!

• We can hold inventory for your usage requirements (talk to us now) • TE Insulators (formerly Morlynn) have a long service history with more than 150 years selling to Australia and New Zealand • The full and comprehensive range includes: – VOLTAGES – low, medium, & high – MATERIALS – Porcelain, Polymer (including silicone & EVA), & Glass – STYLES – Pin, post, strain/termination, spool, shackle, guy strain, & disc • TE Insulators meet all relevant international standards

CHECK OUT OUR INSULATOR CATALOGUE TODAY Terms and conditions apply. To learn more about this offer contact TransNet (0800 442 182, 09 274 3340) or TE Connectivity (0800 489 261) directly.

Ph 0800 442 182 +64 9 274 3340

sales@transnet.co.nz

www.transnet.co.nz

FOR ALL YOUR CCT & ABC REQUIREMENTS

your supplier for CCT & ABC networks

With vegetation and other contact risks CCT and ABC style networks are becoming increasingly common. These technologies offer many reliability benefits to the asset owner and now being considered for problematic areas. TransNet have compiled a comprehensive range of quality connectors and fittings from New Zealand and around the world for these specialised cables, and we have now put together a dedicated product selection guide to help you easily identify what you require for your application.

Range Includes LV ABC FITTINGS

Compression Lugs | Compression Sleeves | Insulation Piercing Connectors | End Caps | Mains Entry Box | House Hook | Strain Clamps | Suspension Clamps | Cable Saddles | Overhead Service Fuses | Overhead Fuse Switch Disconnectors | Ganged Fuse Switch Disconnectors | Overhead Fuse Switch Brackets

HV ABC FITTINGS

Suspension Bracket & Hook Bolt | Suspension Clamps | Helical Bundle Restraints | Raychem Termination Kits

ABC HARDWARE

Weak Links | Eye Nuts | Hook Nuts | Hook Brackets | Double Suspension Yoke Bracket | Hook Bolts

CCT COVERED CONDUCTOR FITTINGS

Strain Clamps | Strain Connections | Compression Joints | Helical Top & Side Ties | Polymer Post Insulators | Polymer Strain Insulators | AMPACT Connectors & GelPact Covers | Bail Clamp Connector | Insulator Mounting Brackets | Surge Arrester Kits

STRINGING & ASSEMBLY EQUIPMENT

Cable Stripping Tool | Core Separating Wedges | Universal Stringing Roller | Insulated Ratchet Spanner | Swivels | Wire Grip | Cable Pulling Socks | Yokebar | Installation Pulley

CONDUCTOR COVER

MV Line Cover | MV Conductor Cover | Raptor Protection Cover

View the catalogue on our website now Ph 0800 442 182 +64 9 274 3340

Or for a hard copy contact your local rep sales@transnet.co.nz

www.transnet.co.nz

NEED AN OVERHEAD FUSE SWITCH?

kgh lv overhead fuse switches The KGH range of overhead disconnect switches has a long and trusted history in New Zealand and around the world for that matter. This range is now part of the larger TE Connectivity offering and complements the rest of the LV connectors and fittings solution nicely.

The upper housing, with integral mounting bracket, holds the conductor, terminals and fuse contacts. The lower housing is hinged for easy opening and closing. It houses the fuse links (to IEC 269) or connecting links. Switches may be mounted individually or as a ganged set.

FEATURES • • • • • • •

160A, 250A, 400A & 630A options Single pole and Ganged three pole switching Lug, IPC or pillar type terminal connections available Fully Insulated On-load switching capability Suits standard hook stick Corrosion proof

KGH160

• Integral mounting bracket for bolting or strapping • Takes size 00 NH fuse links or connecting links • Rated operational voltage is 480V • Can be mounted side by side, with ganged or unganged operation for two or three pole requirements

Ph 0800 442 182 +64 9 274 3340

KGH250

• Extremely compact • Three-pole units • Individual, hinged terminal covers for maximum safety • Takes size 1-2 NH fuse links • Rated operational voltage is 450V • Triple pole switch is supplied with mounting bracket

sales@transnet.co.nz

KGH400 • • • •

Extremely compact One or three-pole units Takes size 1-2 NH fuse links Rated to 400A with fuse link or 630A with solid link • Individual, hinged terminal covers for maximum safety • Triple pole switch is supplied with mounting bracket

www.transnet.co.nz

CUSTOM DESIGNED 11KV CRUCIFIX BY TE A COMPREHENSIVE RANGE OF RAYCHEM TERMINATIONS TO CHOOSE FROM NO STRAIN ON THE SURGE ARRESTER

You Need THIS Switch!

THREE CONNECTION POINTS FOR MAIN LINE CONNECTION QUICK & EASY TEMPORARY EARTH CONNECTION

A crucifix redefined – We’ve taken an existing concept and made it better, safer and easier for workers.

After consultation with the wider industry we were left with a comprehensive list of suggestions, must haves, and would be nice to haves. This information helped us to redesign the existing crucifix setup.

FEATURES • Inclusion of Stand off insulators and surge arrestors – reduces the pressure and therefore chance of cantelever stress to the surge arrestors, the stand off takes all the strain • Raychem Cable Clamps – fault current tested to hold cables in place for added safety should a fault current be experienced

• Inclusion of Brass Earth Studs – For fast and trouble free temporary earthing • Ready for service – simply mount on the pole and make off the termination, the crucifix comes populated and ready for immediate installation saving time on the job • Customisable – should you require amends to the standard kit, simply contact our customer service team or your local account manager to discuss. Class 1 (HDA) & Class 2 (OCP2) surge arrester versions available in 11kV or 33kV (11kV, Class 2 (OCP2) version shown).

• Pre-wired earthing connections to surge arrestors

CUSTOM DESIGN & ENGINEERING FOR CUSTOM SOLUTIONS

Ph 0800 442 182 +64 9 274 3340

sales@transnet.co.nz

www.transnet.co.nz

ALLIED INSULATORS AIR BREAK SWITCH

find out why utility companies in new zealand are making the 330mm

switch

Designed & manufactured in the UK

Wide clearance: 330mm open contact clearance distance on 11kV ABS

Assembled & customised to your specifications in NZ

FEATURES • 330 mm open contact clearance distance on 11 kV ABS as per MAD clearance outlined in EEA SM-EI Part 3 Rules for work on equipment Section 7.703 • Self-aligning, spring loaded contact blades & arcing horn blades • Interlock bolt & padlockable handle make switch operation safe & intentional • NZ industry standard switch handle is fully adjustable • Operation by hand or hookstick • Modular Design offers multiple configurations & mounting • Unassembled kits for remote access areas with 30 minute build time • Pre-assembled kits boast installation time of less than 15mins • Customise creepage distance for individual network requirements (porcelain only) • Hook stick operating handle can be positioned at the height of your choice for easier operation and safety in high wind situations • Ground level operating handle available

It's Tested!

Manufactured and tested in accordance with IEC 30265-1, IEC 60694, IEC 62271, BS EN 60129 and ENATS 41-36 at Allied Insulators' ISO 9001 approved UK factory. All products are available in voltages from 11 kV to 36 kV and ratings up to 630 A.

RANGE CAN BE SUPPLIED WITH THE FOLLOWING OPTIONS: • Superior Silicon Rubber Insulators supplied as standard or Porcelain Insulators if preferred • Available for 11kV, 22kV and 33kV applications • Plain Break Arcing Horns • Load Break Interrupter Heads for increased rating

Ph 0800 442 182 +64 9 274 3340

sales@transnet.co.nz

www.transnet.co.nz

SIMPLY THE BEST Sustainability, xxx Innovation LV FUSE CARRIER & In 15 Years Proven Service in NZ

K491 Fuse Switch Disconnect

Auckland 78 Cryers Road East Tamaki Auckland NEW ZEALAND Ph 0800 442 182 Fax 0800 442 183 PO Box 39 383 Howick, Auckland

Spring Element Easy path out of the connector for any moisture

Wellington

Optional highly visible numbering plate

10 Petone Ave Petone Wellington NEW ZEALAND Ph 04 576 2530 Fax 04 576 0040 PO Box 39 383 Howick, Auckland

Shear Bolt

Continuous electrical path, no rivets/bolts/ joints to loosen over time

NEW ZEALAND

Bolt end does not damage stranded cables

Spring element accommodates expansion & contraction due to heat cycling

sales@transnet.co.nz TransNet Tonga

Membrane pierced on cable insertion

Nuku'alofa Lakalakaimonu Multi Utility Complex Taufa'ahau Road Poutaha Nuku'alofa TONGA Ph +67 627 939 Fax +67 627 976 PO Box 2932 Nuku'alofa

Features

TONGA

• Spring element incorporated into fuse contact design for consistent contact during electrical cycling

transnet@kalianet.to

• Continuous electrical path from pierce point to fuse contact. No screws or rivets - one piece of machined material to make the connection between conductor and fuse link • Cable entry on underside creates natural cable drip loop

• Sealed cable entry point membrane, pierced only when the cable is installed • Fuse carrier is retained in the body of the housing even without fuse link Placeholder, not for Printing Logo use must be approved Min Size 17mm Height

Cxxxxxx

• Test points on each terminal, accessible without removing fuse carrier base

Piercing teeth and contact are one piece

Guides to centre fuse on contacts

• Optional high visibility numbering system • Shear indicator on bolt for visual confirmation shear head has been removed • Fuse centering feature – helps guide fuse insertion from the ground • UV Stabilised materials used for longevity • Fully tested to IEC269-2-1 • 15 years proven reliable service in NZ • Unit is self-supported whilst being mounted on bracket – no need to hold while tightening

Fuse Link Style 22X58MM BARREL

Cable Range (mm²)

Amps

6-35 INSULATED AL OR CU

100

• Drain holes and moisture step, to stop moisture entering piercing chamber TransNet NZ Ltd has made every reasonable effort to ensure the accuracy of this information and it is to the best of our knowledge correct and reliable. Under no circumstances does this constitute an assurance of any particular quality or performance and users should independently evaluate the suitability of products for their desired application. All information in this publication including pricing, drawings, illustrations, images and graphic designs are reflections of our current understanding. TransNet NZ Ltd reserves the right to make any adjustment to this information at any time. Our liability for the products outlined in this publication is set forth in our standard terms and conditions of trade. In case of any potential ambiguities or questions, please contact us for clarification.