NHP and STAHL light up NSW

NHP NEWSLETTER

FEATURES

NHP opens new branch in Dandenong P 2

NHP and STAHL light up NSW power stationsTwo of New South Wales’ largest power stations have upgraded to NHP’s STAHL lighting solutions P 3

Product reviews P 4-6

Latest additions and updates to the NHP range of automation and switchgear

Allen-Bradley Powerflex® drives

Finder 56 series relays

Zanardo sloped roof enclosures

Terasaki Tempower 2 AR6 ACB

Sprecher + Schuh CT7N thermal overloads

Santerno variable speed drives

Microelettrica contactors

New device sure to shed loads off your electricity billKeemin Electrical and NHP have designed a new load-shedding device that can be used in multiple industrial applications P 7

NHP hosts EESA eventNHP and Engineers Australia recently played host to an EESA seminar and awards evening P 7

NHP successfully test electrical arcsNHP recently undertook a complete series of arc fault containment tests at Testing & Certification Australia (TCA) P 8

NEWSROOM PP328727/00073

[ISSUE 56 ] JUNE 09

NHP-STAHL lights brighten the darkest of areas in two of NSW’s largest power stations

NEWS-56v2.indd 1 24/6/09 4:41:25 PM

[2]NEWSROOM NEWSLETTERISSUE #56 JUNE 2009

INDUSTRIAL SWITCHGEAR & AUTOMATION SPECIALISTS

NEWSROOMMANAgiNg DiREcTOR cEO, NHP

Lloyd Thomas

EDiTOR Alastair Dwyer

DESigN AND LAyOUT

Mark Rosser

cONTRibUTORS

Nick Burley

Neil Williams

Alex Coslovich

Darren Besanko

Mark Reidy

Fred D’Souza

Christian James

For further product information please email marketing@nhp.com.au

EDITORIAL

Lloyd Thomas - Managing Director, CEO

NHP and STAHL light up NSW power stations

Macquarie Generation’s Bayswater Power Station, located 16 km from Muswellbrook, and Delta’s Vales Point Power Station, situated in Mannering Park, have both sought new lighting products for their premises and have found that NHP-STAHL offering was able to provide exactly what they were after. Both the Bayswater Power Station, a coal powered station with four steam driven turbo alternators with a combined generating capacity of 2,640 MW (4 x 660 MW), and Vales Point Power Station, also a coal powered station with two steam turbines, with a total generating capacity of 1,320 MW (2 x 660 MW) of electricity, provide much of the electricity for businesses and homes in New South Wales.

Bayswater Power Station Technician Grantly Gray, who works in the Electrical Power Systems department, looks after some of the electrical components at the Bayswater Power Station including the lighting portfolio. “The last unit at Bayswater was commissioned in 1986 with much of our lighting from that time still in use,” says Gray. “So much of it has now become obsolete”. The Electrical Power Systems department at Bayswater had the task of selecting the lights they wanted to use for the long term and with over 17,000 fluorescent lights installed at the Power Station, they had a large task ahead of them.

The issue of coal residue emanating from the conveyor and contaminating the lights was resolved with NHP’s STAHL product offering

While Bayswater has been constantly maintaining their lighting system, the original lights being used have suffered over time. “Unfortunately the housings of our original lights were rated IP 54, which is not really good enough. While they last for awhile, their light output has been reduced in recent years. We have been managing them, but having a whole lot of lights in awkward positions makes regular maintenance difficult,” said Gray.

Both the Bayswater and Vales Point Power Stations have recently installed STAHL lighting throughout many areas of their stations, with full implementation planned to happen in the not too distant future. At Bayswater, Grantly Gray and his team have been improving lighting on a needs basis over past years. “We started

with our dry storage bin in our coal plant. If the lights are not completely sealed, they will absorb the coal dust, which reduces their light output and can eventually destroy them. Most of our lights down there were twin 58 watters, but we found that even when we replaced them with STAHL’s twin 36 watters, we ended up with a lot more light.”

“The NHP-STAHL offering ticks all the boxes - there wasn’t anything else around that matched it,” said Gray. “The fact that the STAHL lights are well sealed means we are getting greater light output with less power. The old fittings are also deteriorating electrically; their capacitors are wearing out causing power factor problems, which overload the lighting circuits. As we are moving through and putting in a lower wattage light with up-to-date power factor correction, we are solving some of the overloading issues” said Gray.

“NHP’s people were great. HAE Rep Geoff Alderton, Sales Rep Terry Crowther and Business Development Manager John McKillop were all good value and very helpful. We looked at the standard make up of the lights that Geoff brought up - electronic ballast, modern type fittings and we explained the issues that we were having. We have long chains of lights with heavier conductors and some of those are contaminated and fatigued, so trying to adapt the push-in connectors to our wires was not going to work. But as it turns out, the NHP-STAHL catalogue has a list of accessories whereby you can choose what you want to have fitted, so we just went through and picked the ones that we wanted.

“The other issue was that we wanted to remain with magnetic ballast lights because we are a bit concerned with the possibility of harmonics from electronic ballasts being sent back through the power circuits. We have a number of sensitive instruments here and we do regular testing and monitoring on equipment that can be affected by background harmonics. STAHL made that option available to us, they were all off-the-shelf modifications we could make. We also went with the capacitor power factor correction and a heavy duty terminal block that would suit the heavy duty environment. We were also able to fit a fuse, which basically means one failed light doesn’t take out the whole bank - you can just walk along and find the light that has gone out and that is where your problem is. We can do all that and still maintain the factory safety ratings on the lights, which means we can use them in the battery rooms and other places – we are really able to use them right through the station. In fact, we have even put them into the canteen kitchen. They were asking me to come up with an indoor fitting that will handle the heat and moisture so I just suggested we use these ones”.

For more information, contact: Product Manager - Hazardous Locations, ben Hooft Telephone: +61 3 9429 2999 Email: bhooft@nhp.com.aunhp.com.au/stahl

Two of New South Wales’ largest Power Stations have chosen NHP’s STAHL lighting solutions when recently looking to upgrade their current lighting systems.

NHP ready for the challenges that lie ahead

“... we recognise we must continue to strive to earn the respect of our customers.“

NHP’s philosophy of providing ‘what you want, where and when you want it’ was further reinforced recently by the opening of our new Dandenong branch.

Situated in the business precinct of Dandenong South, NHP’s new 1300 m2

branch will better service our customers in the South Eastern suburbs of Melbourne as well as the greater Gippsland area.

“Our new Dandenong branch provides us with the opportunity to support our customers by providing significant stockholding, sales and technical support locally. Further to this, Allen-Bradley ® products will also be available from our

new branch as per NHP’s new distribution partnership with Rockwell Automation,” said Simon Kearney, NHP’s General Manager – Victoria & Tasmania.

NHP now has 800+ staff, 21 major branches and 28 regional locations, enabling us to be well equipped to service all of your switchgear and automation needs. NHP will continue to invest in the future and grow its business where our customers most require it with exciting new initiatives.

NHP opens new branch in Dandenong

NHP Dandenong 40-42 Cyber Loop, Dandenong South VIC 3175. Tel +61 3 8773 6400

NHP - differentiators

PEOPLE

PRODUcTS & SOLUTiONS

PROcESSES

Quality personnel who are committed to excellence - right there when you need them - market making, demand creating and customer servicing.

Sourcing the world’s best products from the world’s leading suppliers and then customising solutions for the local market.

What customers want, when and where they want it - easy and efficient to do business with.

The ‘indefinable’ thing which is NHP, what we are collectively

Technology

In tough economic times it is increasingly important to focus on the fundamentals and as a result, I thought it would be useful to use my editorial space in this edition of Newsroom to restate the NHP value proposition.

Like many successful things in life, it is not particularly complicated but it is important. The illustration below displays that proposition.

NHP’s aim of being ‘easy to do business with’ has been taken one step further recently with the introduction of a new 1300 number which will make it easier for you to contact us. By simply calling 1300 NHP NHP (1300 647 647) anywhere in Australia you will be automatically connected to your closest NHP branch.

This new number will complement the current NHP branch numbers in Australia which are all still active.

On 1 July, NHP will conclude its transition period and become ‘fully-engaged’ as the sole distributor of Allen-Bradley ® products within our allocated geographic areas of Australia and throughout all of New Zealand.

NHP will continue to market its current complementary products in all parts of both countries, which includes the Sprecher + Schuh range. NHP will now add the Allen-Bradley ® range of products to its extensive offering within its allocated

geographic area, which will provide customers with a “one-stop-shop” for all their industrial switchgear and automation requirements.

Along with our value-add manufacturing and service capabilities, we believe we can open up a new world of automation and electrical switchgear possibilities for you.

NHP and Rockwell’s distribution partnership

Clearly we believe that NHP is a world-leading, market-making, demand-creating, customer-serving industrial electrical business and we recognise we must continue to strive to earn the respect of our customers.

NEWS-56v2.indd 2 24/6/09 4:41:29 PM

[3]NEWSROOM NEWSLETTER

ISSUE #56 JUNE 2009

COvER STORyNHP and STAHL light up NSW power stations

Macquarie Generation’s Bayswater Power Station, located 16 km from Muswellbrook, and Delta’s Vales Point Power Station, situated in Mannering Park, have both sought new lighting products for their premises and have found that NHP-STAHL offering was able to provide exactly what they were after. Both the Bayswater Power Station, a coal powered station with four steam driven turbo alternators with a combined generating capacity of 2,640 MW (4 x 660 MW), and Vales Point Power Station, also a coal powered station with two steam turbines, with a total generating capacity of 1,320 MW (2 x 660 MW) of electricity, provide much of the electricity for businesses and homes in New South Wales.

Bayswater Power Station Technician Grantly Gray, who works in the Electrical Power Systems department, looks after some of the electrical components at the Bayswater Power Station including the lighting portfolio. “The last unit at Bayswater was commissioned in 1986 with much of our lighting from that time still in use,” says Gray. “So much of it has now become obsolete”. The Electrical Power Systems department at Bayswater had the task of selecting the lights they wanted to use for the long term and with over 17,000 fluorescent lights installed at the Power Station, they had a large task ahead of them.

The issue of coal residue emanating from the conveyor and contaminating the lights was resolved with NHP’s STAHL product offering

While Bayswater has been constantly maintaining their lighting system, the original lights being used have suffered over time. “Unfortunately the housings of our original lights were rated IP 54, which is not really good enough. While they last for awhile, their light output has been reduced in recent years. We have been managing them, but having a whole lot of lights in awkward positions makes regular maintenance difficult,” said Gray.

Both the Bayswater and Vales Point Power Stations have recently installed STAHL lighting throughout many areas of their stations, with full implementation planned to happen in the not too distant future. At Bayswater, Grantly Gray and his team have been improving lighting on a needs basis over past years. “We started

with our dry storage bin in our coal plant. If the lights are not completely sealed, they will absorb the coal dust, which reduces their light output and can eventually destroy them. Most of our lights down there were twin 58 watters, but we found that even when we replaced them with STAHL’s twin 36 watters, we ended up with a lot more light.”

“The NHP-STAHL offering ticks all the boxes - there wasn’t anything else around that matched it,” said Gray. “The fact that the STAHL lights are well sealed means we are getting greater light output with less power. The old fittings are also deteriorating electrically; their capacitors are wearing out causing power factor problems, which overload the lighting circuits. As we are moving through and putting in a lower wattage light with up-to-date power factor correction, we are solving some of the overloading issues” said Gray.

“NHP’s people were great. HAE Rep Geoff Alderton, Sales Rep Terry Crowther and Business Development Manager John McKillop were all good value and very helpful. We looked at the standard make up of the lights that Geoff brought up - electronic ballast, modern type fittings and we explained the issues that we were having. We have long chains of lights with heavier conductors and some of those are contaminated and fatigued, so trying to adapt the push-in connectors to our wires was not going to work. But as it turns out, the NHP-STAHL catalogue has a list of accessories whereby you can choose what you want to have fitted, so we just went through and picked the ones that we wanted.

“The other issue was that we wanted to remain with magnetic ballast lights because we are a bit concerned with the possibility of harmonics from electronic ballasts being sent back through the power circuits. We have a number of sensitive instruments here and we do regular testing and monitoring on equipment that can be affected by background harmonics. STAHL made that option available to us, they were all off-the-shelf modifications we could make. We also went with the capacitor power factor correction and a heavy duty terminal block that would suit the heavy duty environment. We were also able to fit a fuse, which basically means one failed light doesn’t take out the whole bank - you can just walk along and find the light that has gone out and that is where your problem is. We can do all that and still maintain the factory safety ratings on the lights, which means we can use them in the battery rooms and other places – we are really able to use them right through the station. In fact, we have even put them into the canteen kitchen. They were asking me to come up with an indoor fitting that will handle the heat and moisture so I just suggested we use these ones”.

For more information, contact: Product Manager - Hazardous Locations, ben Hooft Telephone: +61 3 9429 2999 Email: bhooft@nhp.com.aunhp.com.au/stahl

Two of New South Wales’ largest Power Stations have chosen NHP’s STAHL lighting solutions when recently looking to upgrade their current lighting systems.

Water vapour escapes the large cooling towers at the Bayswater Power Station

NHP’s STAHL series 6600 Zone 2 lights brighten the dry storage bin a the Bayswater Power Station

NHP Dandenong 40-42 Cyber Loop, Dandenong South VIC 3175. Tel +61 3 8773 6400

These robust light fittings can hold their own in all hazardous area as well as arduous applications such as power generation, utilities - railway, marine etc.

APPLICATIONS

• Chemicalstorageareas• Petrochemicalplants• Grainfacilities• Bulkhandlingfacilities• Flourmills• Powergeneration• Utilities-railways,wharves,

water treatment, etc

FEATuRES AND BENEFITS• Zones2and21,22• IECExcertifiedmeetsimpact

requirements associated with testing - no limitations on mounting of luminaire.

• Availablein18W,36Wand58W

• Enclosure: Polyester resin, glass fibre reinforced.

Cover: Polycarbonate, impact resistant

voltages: AC: 198 - 264 V 50 / 60 Hz DC: 198 - 276 V

• Quickfasteners

• Electroniccontrolequipment

SERIES 6600 ZONE 2 LIGHT FITTINGS

In tough economic times it is increasingly important to focus on the fundamentals and as a result, I thought it would be useful to use my editorial space in this edition of Newsroom to restate the NHP value proposition.

Like many successful things in life, it is not particularly complicated but it is important. The illustration below displays that proposition.

On 1 July, NHP will conclude its transition period and become ‘fully-engaged’ as the sole distributor of Allen-Bradley ® products within our allocated geographic areas of Australia and throughout all of New Zealand.

NHP will continue to market its current complementary products in all parts of both countries, which includes the Sprecher + Schuh range. NHP will now add the Allen-Bradley ® range of products to its extensive offering within its allocated

geographic area, which will provide customers with a “one-stop-shop” for all their industrial switchgear and automation requirements.

Along with our value-add manufacturing and service capabilities, we believe we can open up a new world of automation and electrical switchgear possibilities for you.

NHP and Rockwell’s distribution partnership

Clearly we believe that NHP is a world-leading, market-making, demand-creating, customer-serving industrial electrical business and we recognise we must continue to strive to earn the respect of our customers.

NEWS-56v2.indd 3 24/6/09 4:41:34 PM

NHP is pleased announce that one of the world’s most technically advanced air circuit breaker ranges is now complete with the release of the new TemPower 2 AR6 from Terasaki.

The TemPower 2 AR6 ACB represents one of the most important power distribution product releases for NHP in 2009. NHP can now offer a Terasaki AR ACB in the 5000 and 6300 A range which keeps the common modern appearance of the existing AR series.

Like all Terasaki AR ACBs, the AR6 is a quality product that is aesthetically pleasing while retaining a physically strong design that offers maximum performance.

For further information please contact your local NHP representative on 1300 NHP NHP or visit nhp.com.au.

NHP’s supply partner Finder has announced an update to its 56 series relays, which now provide enhanced functionality during installation and testing.

The updated series of 2 pole and 4 pole power relays feature as standard on all models a test button and mechanical flag indicator for manual operation during testing and commissioning. The extensive range available from NHP also now offers, as options, an indicator LED to show operational status; in particular the DC coil versions feature twin LEDs, making them insensitive to polarity, allowing replacement of non-LED versions to be trouble free. All of the models feature a new printed front plate showing the full part number, contact rating and coil voltage, and both the new pushbutton and the coil housing are colour-coded for rapid visual identification of AC or DC models.

The six models in the 56 series from NHP and Finder provide the capability of switching higher current loads with the option of up to four changeover contacts. They are typically used by OEMs, panel builders and end users in applications including the switching of single phase motors, solenoid operation with feedback monitoring signals, multi-element heating loads and various types of lighting. The provision of plug-in, PCB and an extended

range of rail and flange-mounting options and adaptors, along with a complementary range of sockets, suppression modules and accessories, allows maximum flexibility of both mounting and connection.

Standard contact material is nickel-silver and cadmium-free, but alternative contact materials are on offer to suit inductive or capacitive loads.

The relays are rated as standard at up to 12 A at 250 V AC with maximum peak values of 20 A and 415V AC. A 415 V AC coil version is also available for use in industrial applications where a neutral connection is not available

For further information please contact your local NHP representative on 1300 NHP NHP or visit nhp.com.au

As you may already be aware, NHP will soon be selling the Allen-bradley ® range of drives to customers, together with our familiar Santerno drives. The addition of such a broad range of drives means NHP will have the widest range of drives available on the local market, and combined with our extensive sales network we can provide you with exactly the drive you need, when you need it.

Our drives portfolio covers everything from single phase input 0.25 kW, to 6.6 kV 6,770 kW drives and bigger. Further to this, our Customer Service division can offer complete care of larger drives that includes commissioning, maintenance and breakdown service.

We are excited to soon release the first of the drives from the Allen-Bradley PowerFlex® 750 series - the PowerFlex 755®. The 755 is a high end drive which provides one consistent platform across a range of kW ratings and includes an IP 54 option. This first release covers up to 250 kW in both IP 20 and IP 54, with a very compact wall mount 250 kW IP 54 drive, which breaks new ground.

Like all Allen-Bradley® drives there is a focus on ease of integration, with a range of new stand-out features providing a number of additional benefits. Some of these include embedded Ethernet communication port, multiple safety options, embedded DeviceLogixTM control, predictive diagnostics, a real-time clock, conformal coatings standard and preventative diagnostics.

The PowerFlex 755® is ideal for applications that require safety, high performance motor control and application flexibility.

For more information on some of the outstanding capabilities of this drive, please contact your local NHP representative on 1300 NHP NHP

New features enhance 2 pole and 4 pole power relays

Allen-Bradley Powerflex® drives coming soon to NHP

PRODuCT REvIEWSPRODuCT REvIEWS

[4]NEWSROOM NEWSLETTERISSUE #56 JUNE 2009

NHP provides new sloped roof stainless steel enclosuresNHP and Zanardo have recently introduced a series of new sloped roof stainless steel enclosures to the market.

Manufactured from 316 grade stainless steel and characterised by its integrated 38° sloping roof, the D93/SR enclosure range is ideal in both harsh mining conditions and clean hygienic environments of the food industry.

Certified to IP 66, the integrated sloped roof overhang ensures protection from dust or water settling in the gutter and on the seal.

• Material: Body/door 1.5mm stainless steel 316 grade. Mounting plate: 2mm zinc plated steel

• Body: Fold and seam welded. Simple installation with external mounting flanges top and bottom.

• Gasket: Polyurethane (PUR) one piece providing a continuous seal.

• Lock: Stainless steel 3 mm DIN-lock with 90 degree movement.

• Mounting plate: Fixed on to press welded studs at the rear of the enclosure.

For further information on NHP’s range of sloped roof stainless steel enclosures, please contact your local NHP representative on 1300 NHP NHP or visit nhp.com.au

38˚ increased slope roof

20 mm roof overhang

NHP and Sprecher + Schuh are soon to release the new CT7N bi-metal thermal overload, which provides advanced protection features and a new look that fits the Sprecher + Schuh family of contactors and motor protection devices.

Sprecher + Schuh have always paid particular attention to the subject of motor protection and this is reflected in their new CT7N line of thermal overload relays which include many features not available in most competitor products.

Consistent and reliable protection is ensured through a complex factory calibration procedure performed on each unit at full operating temperature.

Superior Class 10 characteristics – with today’s T-frame (MEPS) motors having less iron and copper than the older motors, a faster class 10 was needed to be developed to assure optimum protection, with the CT7N providing this necessary feature.

Protection from single phasing is a feature not always found in traditional relays, with the CT7N providing accelerated tripping under this condition through a special ‘differential tripping’ mechanism built into the CT7N.

Other features include:

• Selectablemanual/automaticreset

• Separatenormalopensignalcontactisolatedfromthetripcontact (can be used on different voltage rails)

• Increasedthermalcapabilitiesforbuttingdevicescloser

• Canbeusedonsinglephaseapplicationswithallprotection functions available – single phasing and class 10 protection

• AnewadaptorexternalrestCT7N-RA3providesalargertarget surface for actuation.

For further information please contact your local NHP representative on 1300 NHP NHP or visit nhp.com.au/s+s

Sprecher + Schuh’s CT7N - the next generation of thermal overloads

NEWS-56v2.indd 4 24/6/09 4:41:41 PM

NHP is pleased announce that one of the world’s most technically advanced air circuit breaker ranges is now complete with the release of the new TemPower 2 AR6 from Terasaki.

The TemPower 2 AR6 ACB represents one of the most important power distribution product releases for NHP in 2009. NHP can now offer a Terasaki AR ACB in the 5000 and 6300 A range which keeps the common modern appearance of the existing AR series.

Like all Terasaki AR ACBs, the AR6 is a quality product that is aesthetically pleasing while retaining a physically strong design that offers maximum performance.

For further information please contact your local NHP representative on 1300 NHP NHP or visit nhp.com.au.

NHP’s supply partner Finder has announced an update to its 56 series relays, which now provide enhanced functionality during installation and testing.

The updated series of 2 pole and 4 pole power relays feature as standard on all models a test button and mechanical flag indicator for manual operation during testing and commissioning. The extensive range available from NHP also now offers, as options, an indicator LED to show operational status; in particular the DC coil versions feature twin LEDs, making them insensitive to polarity, allowing replacement of non-LED versions to be trouble free. All of the models feature a new printed front plate showing the full part number, contact rating and coil voltage, and both the new pushbutton and the coil housing are colour-coded for rapid visual identification of AC or DC models.

The six models in the 56 series from NHP and Finder provide the capability of switching higher current loads with the option of up to four changeover contacts. They are typically used by OEMs, panel builders and end users in applications including the switching of single phase motors, solenoid operation with feedback monitoring signals, multi-element heating loads and various types of lighting. The provision of plug-in, PCB and an extended

range of rail and flange-mounting options and adaptors, along with a complementary range of sockets, suppression modules and accessories, allows maximum flexibility of both mounting and connection.

Standard contact material is nickel-silver and cadmium-free, but alternative contact materials are on offer to suit inductive or capacitive loads.

The relays are rated as standard at up to 12 A at 250 V AC with maximum peak values of 20 A and 415V AC. A 415 V AC coil version is also available for use in industrial applications where a neutral connection is not available

For further information please contact your local NHP representative on 1300 NHP NHP or visit nhp.com.au

‘PRESSURE VALVE’ SySTEMThe TemPower 2 AR6 is able to interrupt the current at two points on the line side of the ACB, while dissipating heat from essential components such as the main contacts and terminals by efficient air convection through a pressure valve.

Some of the key AR6 features include:

• Maximumratedcurrent:6300A* A maximum rated current 6300 A is achieved

by suppressing the temperature rise of contacts and terminals by means of a ‘DoubleBreak’ line side scheme and a pressure-valve implemented efficient air convection.

• Ratedbreakingcapacity:120kA A rated breaking capacity of as high as 120 kA at

AC440V is achieved for the standard AR6.

• Ratedshort-timecurrent:120kA The rated short-time current is also 120 kA for

1 second.

• Neutralpolecurrentcarryingcapacity:6300A The rated current carrying capacity of the neutral

pole is the same as the main poles, providing protection against a temperature rise due to harmonic components flowing through the Neutral pole.

• Mechanicalendurance:5000open/closecycles A high mechanical endurance is achieved. The

new models have undergone and passed a 5000-operation cycle test which eclipses the IEC 1500-cycle test, which proves the high of reliability of the product.

* Result may vary depending on switchboard / design - installation

NHP introduces new Terasaki Tempower 2 AR6 air circuit breaker

New features enhance 2 pole and 4 pole power relays

PRODuCT REvIEWS

AR SIZE 2800 - 2000 A

AR SIZE 32500 - 3200 A

AR SIZE 44000 A

AR SIZE 65000 - 6300 A

MAxIMUM POWER, MINIMUM VOLUME“Maximum power from minimum volume” was a central principle in the TemPower 2 AR6 design brief. With a depth of 380 mm, the TemPower 2 AR6 is one of the smallest depth 6300 A ACBs in the world! Furthermore, the TemPower 2 AR6 shares a common height and front cover dimension with the existing Terasaki AR ACB range.

Above: New Terasaki TemPower 2 AR6 ACB

Right: Patented ‘pressure Valve’ system

[3]NEWSROOM NEWSLETTER

ISSUE #56 JUNE 2009

The new CT7N overload is made to suit the CA 7 series of contactors. The CT7N overload can also be fitted with a remote reset magnet CMR7N.

NHP and Sprecher + Schuh are soon to release the new CT7N bi-metal thermal overload, which provides advanced protection features and a new look that fits the Sprecher + Schuh family of contactors and motor protection devices.

Sprecher + Schuh have always paid particular attention to the subject of motor protection and this is reflected in their new CT7N line of thermal overload relays which include many features not available in most competitor products.

Consistent and reliable protection is ensured through a complex factory calibration procedure performed on each unit at full operating temperature.

Superior Class 10 characteristics – with today’s T-frame (MEPS) motors having less iron and copper than the older motors, a faster class 10 was needed to be developed to assure optimum protection, with the CT7N providing this necessary feature.

Protection from single phasing is a feature not always found in traditional relays, with the CT7N providing accelerated tripping under this condition through a special ‘differential tripping’ mechanism built into the CT7N.

Other features include:

• Selectablemanual/automaticreset

• Separatenormalopensignalcontactisolatedfromthetripcontact (can be used on different voltage rails)

• Increasedthermalcapabilitiesforbuttingdevicescloser

• Canbeusedonsinglephaseapplicationswithallprotection functions available – single phasing and class 10 protection

• AnewadaptorexternalrestCT7N-RA3providesalargertarget surface for actuation.

For further information please contact your local NHP representative on 1300 NHP NHP or visit nhp.com.au/s+s

Sprecher + Schuh’s CT7N - the next generation of thermal overloads

NEWS-56v2.indd 5 24/6/09 4:41:55 PM

PRODuCT REvIEWS INDUSTRIAL SWITCHGEAR & AUTOMATION SPECIALISTS

[6]NEWSROOM NEWSLETTERISSUE #56 JUNE 2009

Keemin and NHP design device sure to shed loads off your electricity bill

NHP and Engineers Australia hosts EESA eventTRACTION CONTACTORS - LT SERIESTraction contactors have been exclusively designed for application on vehicles for electric traction with a very high number of operations even under shock and vibration conditions. They are available in current ratings 60 A through to 1700 A with special versions available up to voltage ratings of 4 kV. The breaking circuits of these contactors are equipped with non-direct magnetic blow-out circuits (in parallel with the main contacts) and work efficiently, both with high and low currents.

Further, the magnetic blow-out system makes these contactors suitable for operation with high frequency current.

Main pole contacts are designed for easy cleaning and replacement with normal tools while the relative wiping of the contact surfaces during operation provide self cleaning. Low resistance D.C. control coils operate without economy resistors and over a wide operating range (at least -30 % …+30 % of nominal).

The high insulation rating of the coil guarantees safe operation even in high ambient temperatures. A ‘varistor’ cuts off the peak voltage when the coil is de-energized to prevent spikes on the control supply. They can be used with AC supplies when a rectifier is fitted.

The assembly of these contactors allows many variations, such as:

• Contactorswithnormallyclosedpoles

• Contactorswithbothnormallyclosed and normally open poles

• Mechanicallyinterlockedcontactors

• Mechanicallylatchedcontactors

• Pneumaticormotorizedoperation

NHP provides one stop solutions for all DC switching applications

BAR CONTACTORS - N SERIESDue to their strong construction and highly efficient performance, these bar contactors are suitable for heavy duty applications. They cover current ratings from 125A to 3000A and can switch both AC and DC loads up to 690 volts or 1000V on special order. Due to the bar assembling system, they allow for a wide selection in a number and type of main poles, anti-arc devices, auxiliary contacts and control voltages. They also allow for easy visual inspection and servicing, with immediate access to all component parts without removing the contactor or disconnection of the electrical circuit. All metal parts, including bolts and springs are oxidation proofed and all insulating materials are made of anti-fungus synthetic fibers.

The design of bar contactors provides a number of unique features that result in reliable and heavy duty performance characteristics:

• verylowcontactbounce

• wipingofthecontact’ssurfaceswith the resulting self-cleaning effect

• alowprobabilityofarcre-striking,even with highly inductive loads

• anextremelyhigh number of operations or for voltages above 600 V and with high breaking current

• specialmagneticblow-outs, deflectors and

arc chutes with spark arresting sheets for switching under inductive load up to 10/20 times the rated current

Accessories:• Mechanicalinterlocksavailablein

vertical or horizontal mounting

• Latchingmechanism

• Auxiliarycontacts

• FrontconnectionwithplateNHP’s Microelettrica range of contactors provide complete switching solutions for DC applications using ‘bar type’ or so called ‘clapper’ contactor designs as well as modern, compact traction contactors. Bar contactors are well suited to special and multi-pole applications whereas traction contactors are highly suited to train and tram applications as well as general DC motor switching in industry.

For further information please contact your local NHP representative on 1300 NHP NHP or visit nhp.com.au

Keemin Electrical, in conjunction with NHP, has developed a new load-shedding device that can be used in multiple industrial applications in many varying environments, all of which benefit the end user.

The unit, which was three years in the making, has been designed to limit the maximum demand of an installation, potentially saving users on a maximum demand tariff thousands of dollars each year. Maximum demand is paid monthly and is calculated on the maximum demand an installation has reached previously. When installing the load shedder, Keemin Electrical can apply to have the user’s maximum demand reset to a lower level, therefore saving money on electricity bills and helping maintain a lower maximum demand level.

So how is it done? By constantly monitoring the current drawn by an installation and comparing it to the maximum level set, the unit will start ‘shedding’ low priority / non critical loads to keep the amperage below the desired maximum value. Once consumption drops, the loads are switched back on. Using a current transformer to monitor the current drawn allows the flexibility to monitor installations drawing 10’s of amps through to 1000+ amps. Current transformers are inexpensive, reliable and come in a wide range of ratio’s to suit all applications.

The device is extremely user-friendly and fully configurable, with the current status readily viewable via the interactive display found on the Mitsubishi Alpha 2 controller. Some of the other NHP products used in the load-shedding device include Terasaki DIN-T series contactors, Cabur Switching power supply, an IME current transformer and a DIN-T insulated load centre.

“We recently installed this device into a meat processing plant and since then the company has saved around about $900 a month on the maximum demand tariff,” says Stephen Muller, Keemin’s leading hand Electrician.

“An example of this device being used in an industrial application may include delaying the start of a storage freezer compressor for the brief period of time a blast freezer or other load is in use,” said Stephen.

“Once demand has dropped off, the storage freezer is automatically bought back on-line. Often a cool room installation will have multiple compressors; maximum demand can be successfully limited by temporarily shutting down a compressor or delaying the start of one. The cool room can still keep the produce within acceptable temperature limits and the product is not affected during the short periods of time that a compressor is shut down until demand drops. In the agricultural field, selected cool room compressors and irrigation pumps can be configured to maintain a lower maximum demand”.

Installations relying on a generator can be configured to keep the load within limits by shedding non-essential loads. If a stand-by generator is installed, the load shedder can be configured to bring some non-essential loads online if the demand on the generator is low enough while supplying essential loads.

In a domestic environment, the load shedder can be used to control in-slab heating zones to keep the maximum demand below the installed supply capacity control device value so as to eliminate nuisance tripping. By using the load shedder to manage the loads, the total load of the installed elements can be higher than the supply capacity.

For more information on load shedding device, contact: Keemin Electrical on (03) 5368 2001 or for further information on any products mentioned, contact NHP on 1300 NHP NHP

NHP and Engineers Australia recently played host to a seminar and awards evening held by the Electric Energy Society of Australia (EESA) at our Richmond Head Office.

On Wednesday 22 April, a night of presentations, awards, supper and networking opportunities was enjoyed by all in attendance.

2008 EESA Conway Award Winner Professor Gerard Ledwich gave a presentation on Transmission Load Modelling, while 2008 EESA Creswell Award Winner Mr. Tony Gillespie presented on Risk Based Power System Earthing. Both the presentations were highly informative and enjoyed by all.

One of the highlights of the evening was the presentation of the NHP 2008 Graduate Electrical Power Engineer of the Year Award to winner Felicity Galluzzo, which she graciously accepted during her speech.

The event was a great success with the attendance exceeding expectations on the night.

Sinus Nano

Sinus Micro

Sinus Penta

Quality a priority for variable speed drives from NHP and SanternoNHP’s supply partner Santerno is a specialist manufacturer of variable speed drives which include the Sinus Nano, Micro and Penta drives, a range we are committed to developing and improving further in the Australian and New Zealand markets.

NHP carries stock of the entire Santerno range in all its branch locations throughout Australia and New Zealand, ensuring high availability of standard components.

When selecting your next drive consider that the Penta drive is covered by a 3 year warranty while the Nano and Micro drives are provided with a 2 year warranty.

For further information on this Santerno product or any other product in the NHP range, please contact your local NHP representative on 1300 NHP NHP or visit nhp.com.au/santerno

The Sinus Nano covers 0.4 to 2.2 kW to suit a single phase 200-240 V AC supply and features easy to use front panel controls. It can operate in basic V/f operation or in Sensorless Flux Vector mode for improved torque control and is suitable for all basic motor speed control requirements.

The Sinus Micro is available from 0.4 to 22 kW in both single phase 200-240 V AC and three phase 380-480 V AC versions and includes “Firemode” operation suitable for HVAC installations. Sinus Micro also has 200 % starting torque capability and built-in dynamic braking with the option for additional brake resistors when required.

The Sinus Penta is the fully featured flagship drive of the ‘Sinus’ range. It is available from 4 to 1100 kW in three phase 380-500 V AC supply and 75 kW to a massive 2 MW in 3 phase 525-690 V AC supply. The Penta boasts an extensive range of control modes with many special features for adaptation to all types of motor speed control applications.

NEWS-56v2.indd 6 24/6/09 4:42:04 PM

[7]NEWSROOM NEWSLETTER

ISSUE #56 JUNE 2009

Keemin and NHP design device sure to shed loads off your electricity bill

NHP and Engineers Australia hosts EESA event

Keemin’s leading hand electrician Stephen Muller (left) and Managing Director John Cutler (right) join NHP’s Sales Rep Michael Gregurke (centre) in proudly displaying the new load-shedding device

Keemin Electrical, in conjunction with NHP, has developed a new load-shedding device that can be used in multiple industrial applications in many varying environments, all of which benefit the end user.

The unit, which was three years in the making, has been designed to limit the maximum demand of an installation, potentially saving users on a maximum demand tariff thousands of dollars each year. Maximum demand is paid monthly and is calculated on the maximum demand an installation has reached previously. When installing the load shedder, Keemin Electrical can apply to have the user’s maximum demand reset to a lower level, therefore saving money on electricity bills and helping maintain a lower maximum demand level.

So how is it done? By constantly monitoring the current drawn by an installation and comparing it to the maximum level set, the unit will start ‘shedding’ low priority / non critical loads to keep the amperage below the desired maximum value. Once consumption drops, the loads are switched back on. Using a current transformer to monitor the current drawn allows the flexibility to monitor installations drawing 10’s of amps through to 1000+ amps. Current transformers are inexpensive, reliable and come in a wide range of ratio’s to suit all applications.

The device is extremely user-friendly and fully configurable, with the current status readily viewable via the interactive display found on the Mitsubishi Alpha 2 controller. Some of the other NHP products used in the load-shedding device include Terasaki DIN-T series contactors, Cabur Switching power supply, an IME current transformer and a DIN-T insulated load centre.

“We recently installed this device into a meat processing plant and since then the company has saved around about $900 a month on the maximum demand tariff,” says Stephen Muller, Keemin’s leading hand Electrician.

“An example of this device being used in an industrial application may include delaying the start of a storage freezer compressor for the brief period of time a blast freezer or other load is in use,” said Stephen.

“Once demand has dropped off, the storage freezer is automatically bought back on-line. Often a cool room installation will have multiple compressors; maximum demand can be successfully limited by temporarily shutting down a compressor or delaying the start of one. The cool room can still keep the produce within acceptable temperature limits and the product is not affected during the short periods of time that a compressor is shut down until demand drops. In the agricultural field, selected cool room compressors and irrigation pumps can be configured to maintain a lower maximum demand”.

Installations relying on a generator can be configured to keep the load within limits by shedding non-essential loads. If a stand-by generator is installed, the load shedder can be configured to bring some non-essential loads online if the demand on the generator is low enough while supplying essential loads.

In a domestic environment, the load shedder can be used to control in-slab heating zones to keep the maximum demand below the installed supply capacity control device value so as to eliminate nuisance tripping. By using the load shedder to manage the loads, the total load of the installed elements can be higher than the supply capacity.

For more information on load shedding device, contact: Keemin Electrical on (03) 5368 2001 or for further information on any products mentioned, contact NHP on 1300 NHP NHP

NHP and Engineers Australia recently played host to a seminar and awards evening held by the Electric Energy Society of Australia (EESA) at our Richmond Head Office.

On Wednesday 22 April, a night of presentations, awards, supper and networking opportunities was enjoyed by all in attendance.

2008 EESA Conway Award Winner Professor Gerard Ledwich gave a presentation on Transmission Load Modelling, while 2008 EESA Creswell Award Winner Mr. Tony Gillespie presented on Risk Based Power System Earthing. Both the presentations were highly informative and enjoyed by all.

One of the highlights of the evening was the presentation of the NHP 2008 Graduate Electrical Power Engineer of the Year Award to winner Felicity Galluzzo, which she graciously accepted during her speech.

The event was a great success with the attendance exceeding expectations on the night.

NEWS-56v2.indd 7 24/6/09 4:42:14 PM

INDUSTRIAL SWITCHGEAR & AUTOMATION SPECIALISTS

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NHP Electrical Engineering Products Pty LtdA.B.N. 84 004 304 812

NEWS-56 © Copyright NHP 2009

NHP, in conjunction with supply partners CuBIC and Terasaki, recently undertook a complete series of arc fault containment tests at the Testing & Certification Australia (TCA) test station at Lane Cove in Sydney.

NHP had a team of engineers on-site including General Manager – Quality & Engineering Alex Coslovich, Brand Product Manager – Modular Switchboard Systems John Thornton, Product Manager – Air Circuit Breakers Nick Burley and Development & Testing Manager David Maxwell, with CUBIC engineers from Denmark in Ove Nilsen, John Olsen and Rene Jensen also participating in the tests.

“We had quite a hectic test schedule across three days at the Testing & Certification Australia (TCA) test station,” recalls Alex Coslovich. “TCA are a thoroughly professional organisation to deal with, and with their assistance we were able to complete no less than 16 different tests spanning across three different fault levels at 415 V, 65 kA, 80 kA and 100 kA. It’s a credit to all concerned that we not only completed these tests, but achieved the positive test results that we were aiming for”.

“We completed a series of arc fault containment tests in two panels, both on the load and line side,” Alex continues. “Each panel was fitted with air circuit breakers, one of each frame size, and we also had a tier of motor control units installed in the Cubic Multi Drawer system. We also managed to test the clearance times of the Camto Arc Detect system to complement the results of the arc fault containment tests.

“We also had access to a high speed camera during the tests, and it was quite fascinating to see the arc develop and the

mechanical forces that occur during the arc fault – this is not normally visible to the naked eye.

“The tests undertaken were designed to test the ability of the switchboard to withstand the pressure build-up when an arc occurs, so it is a bit like mechanical strength testing,” says Alex. “It is very unique because in Australia we have Australian Standard AS/NZS3439 with a special annexe called ‘annexe ZD’ for arc fault testing, which is very different to what international standards call for. This is why we do this testing in Australia. We believe that we are the only kit board supplier in Australia that has achieved these results to AS3439”.

John Thornton summed up the three days of testing in this statement. “Just as important as the successful series of tests was the willingness of all involved to co-operate with one other, offer technical advice and encouragement, which were all key ingredients to a successful outcome.”

Special thanks must go to Peter Ryan, Max Carstedt and the TCA staff for their contribution and greatly assisting in completing a very heavy test schedule within a very short period of time.

For additional information relating to arc fault testing and requirements, please refer to the current edition of Technical News (TNL) - issue # 56 available now from our Online Resource Centre orc.nhp.com.au

NHP successfully test electrical arcs at TCAWHAT IS AN ELECTRICAL ARC?

An electrical arc is one of the more spectacular phenomena within the world of electricity. Like a bolt of lightning, an arc is both a wondrous and beautiful form in nature, yet extremely powerful and potentially very destructive.

Technically, an arc is defined as a luminous discharge of electricity across an insulating medium, usually accompanied by the partial vaporisation of electrodes. Yet arcs are very common, and usually result from any form of electrical switching. The key is to understand how to control and extinguish the “predictable” arcs that are inherent in the normal operation of switchgear, as well as to identify and suppress the unwanted arcs that can accidentally occur within electrical installations.

An arc fault is a very destructive force

(top) NHP’s Brand Product Manager - Modular Switchboard Systems, John Thornton inspects one of the Terasaki ACBs during testing.

(BottoM LEFt) NHP engineers discuss the intricacies of the arc fault containment tests.

(BottoM RIGHt) The testing facilities at the Testing and Certification Australia test station were first class and allowed NHP to obtain some high quality results.

AUSTRALiAnhp.com.au

1300 NHP NHP

NEWS-56v2.indd 8 24/6/09 4:42:23 PM