Please mark your calendar for HV Power’s 2009 Line Distance Protection Seminars. These advanced technology seminars will again be provided by Gustav Steynberg of Siemens Germany.

Given the positive reviews of Gustav’s half day seminars we ran last year, we are extending this year’s session to full day and two day sessions to allow new and more detailed information to be covered. These seminars are recommended for practising protection engineers, design engineers and skilled technicians. The 2 day Wellington Distance Protection training will be run on the 2 days preceding the EEA Apex Northern Summit (Wellington) to encourage young engineers from out of town to attend both.

We will send a separate email mid October with further information and RSVP details to technical staff and engineers. If we accidentally miss you out, please contact us for your invitation.

• Wellington Tuesday 3rd & Wednesday 4th November 2009 (two day seminar)
• Christchurch Thursday 5th November 2009 (one day seminar)
• Auckland Friday 6thNovember 2009 (one day seminar)

Please also mark your calendar for the last week in November. HV Power will be hosting a power quality expert from A.Eberle - Germany. We will be hosting 2 hour seminars in Wellington and Christchurch, and a shorter seminar in Auckland. The subject will be Class A portable and permanently installed power quality analysers and the application of EN 50160 power quality standards. Further details will be announced in our November newsletter.

Seminar dates:

• Auckland Tuesday 24th November (morning as part of HV Power’s Technology Showcase)
• Christchurch Thursday 26th November (2 hour afternoon session)
• Wellington Friday 27th November (2 hour morning session)

Have you previously wanted hardened products, but ended up with something less due to purchase price constraints? Think again, as the 6KL sets a new price/performance benchmark. Now those with a smaller budget can experience GarrettCom® reliability, performance and service!

Given the substation hardened specifications and very affordable price, the new 6KL GarrettCom Ethernet switch should become your standard switch-of-choice. Starting at $700+GST this unit is a great building block for utility and industrial applications.

IEEE 1613 Substation hardened and IEC 61850 compliance make this product the simple choice for utilities. It is electrically hardened to suit the substation and fully compliant with DNP-IP and IEC 61850 systems. Long life is assured as convection cooling removes the issue of fan reliability.

Available with choice of 12 V, 24 V, 4 8V, 125 V, 250 Vdc or 100-240 Vac supply. Dual source DC power supply option allows second input source for increased reliability. Designed for vertical mounting, the unit is panel mounted or available with optional DIN rail kit.

Supplied as standard with 4 x 10/100 copper ports, additional port slots permit :
-- 4 additional x 10/100 copper ports and 2 x copper Gigabit ports
-- 2-4 fibre ports and two fibre Gigabit ports(LC, MTJR, SC or ST) with single or multi-mode support

Also available with 5 mil conformal coating for moisture prone areas or 14 mil for corrosive environments.

Visit the 6KL webpage, and call us now for a quote.

Simple, reliable and error free. Designed for outdoor use (wet or dry), DEHN’s new telescopic insulated pole is ideal for measuring the clearance to ground of overhead lines (up to 33 kV L-L).

The built-in scale allows the direct measurement of total height of your line above ground. From the compact 1.7 m starting position, the pole is extended until contact is made with the (live) line, and height scale then read. Telescoping from the vertical position makes raising and lowering simple and safe, even with a single person. Weighing under 6 kg, with a foot bracket to provide additional operator support make this device simple to use. Maximum height is 10.6 m.

The telescopic pole can also be fitted with a voltage detector head for the proving of lines.

Contact us today to arrange an evaluation for your field staff.

Want to add additional protection functions to your IED? Many SIPROTEC relays offer flexible protection functions which allow the user to create a protection function based on a selection of a measured or calculated value.

An example of use of the flexible protection functions is to add sensitive broken conductor detection improving network reliability and safety. For broken conductor detection, simple negative sequence current detection cannot be reliably used, as the threshold required to be insensitive to normal full load imbalance (load imbalance and CT errors), may be too high to detect a broken conductor on a lightly loaded line.

The flexible protection function allows the ratio of the negative sequence to positive sequence current to be calculated. Since this ratio is nearly constant with variations in load, a more sensitive broken conductor setting can be applied.

Download the latest SIPROTEC Application Example to see how simple this function can be implemented using, as an example, the SIPROTEC 7SJ80.

In reading the above item, you may have wondered what the difference is between the SIPROTEC “CFC” function and the “Flexible Protection Function”.

Using DIGSI software for application of settings, the CFC (Continuous Function Chart) is an editor used to create customised logic that can be compiled to run on the SIPROTEC 4 and Compact (80 series) protection relay. CFC’s are used to provide additional/customised functionality such as interlocking schemes, switching sequences and the creation of user defined messages. Creating CFC logic is via a simple drag and drop of logic symbols using a graphical user interface based on IEC 61131 standard for industrial controllers. Note; in order to program CFC’s, the Professional version of DIGSI is required.

Flexible Protection Functions operate like any other protection element, but the user can choose what measurement element they require. The measurement element can be selected from a range of measured values, calculated values, or binary inputs. Threshold, timing and trip/alarm parameters may also be set. Flexible Protection Functions operate the internal device pickup and trip elements and are guaranteed to perform at protection speed.

Up to 20 user-defined flexible protection elements can be created and these are simpler to implement than using CFC’s. For “power-users”, flexible protection functions may be augmented with CFC’s for added flexibility and control.

Flexible Protection Functions are available in 7SJ61, 7SJ62, 7SJ64 overcurrent protection relays, 7UT613/63x transformer protection relays & Compact 7SJ80 overcurrent and 7SK80 motor protection relays. All SIPROTEC 4 and Compact (80 series) protection relays support CFC logic.

The Electro Industries Shark 100 and 200 Series have again been updated with expanded capability.

The Shark 100 now features an Ethernet interface option. If you are looking for a low cost 0.2 % accurate panel check meter, the Shark 100 is your product. The entry level unit has V & I readings, but can be expanded to add kW, kVAR, PF, KVA, Freq, kWh, kVARh, %THD and limit alarms. The DNP 3:00 interface remains available for RS485 equipped units.

The new Shark 200-S adds data-logging capability to the Shark 100-S Ethernet/WI-FI equipped unit.

Download Shark 100 Datasheet
Download Shark 200-S Datasheet