FEATURE CIRCUIT PROTECTION
STAYING SAFE, STAYING FAST D
Today’s electricians face something of a catch-22 situation when it comes to circuit protection. In an era of increasing legislation, safety is of paramount importance, while running parallel to that is the focus on efficiency and time saving. Here, Schneider Electric’s Deepak Sharad offers some advice on how to stay safe and speedy
emanding schedules and shrinking margins make the job of the
modern day electrical contractor a tough one - there is increased pressure to get the job done as quickly as possible while increased legislation makes it more challenging to do this. The primary aim of the contractor is to work efficiently as possible while retaining the highest degree of safety. In addition to this the rapid rise in
electrical appliances in recent years means that contractors are under even more pressure to ensure optimum power performance and continuity at all times. One measure that contractors can
employ to achieve this is the new Resi9 range of consumer units from Schneider Electric. The Resi9 is a plug on device which removes the need to cable one of the terminals. As such, all outgoing devices can be connected in seconds and, with no incoming terminal to tighten, the correct mechanical connection force is guaranteed every time. The result is significantly reduced commissioning time,
Resi9 can even provide continuity of supply in the event of fault. Of course, this comes as a major benefit to the end user, eliminating the chance of electrical down-time.
ADDITIONAL FEATURES To ensure that the wrong cables cannot be incorrectly inserted, the
Resi9’s terminals have been fitted with insulated pull up safety shutters. It also
meaning one less terminal to set torque. More so, the busbar assembly is fully encapsulated, providing complete finger safety and increasing the overall safety of the product. This means installers can therefore save time when individually disconnecting or applying devices to the DIN-rail in complete protection, while also ensuring end user protection. With a wide range of switch dis- connectors, RCDs and MCBs, complimented by a single pole RCBO,
Right and below: the new Resi9 range of consumer units from Schneider Electric offers safety and efficiency
NEW PKE-XTU CP TRIP BLOCKS
Eaton has added the new PKE-XTU CP trip blocks to its offering for the PKE electronic motor protective circuit breakers. Users can now instantly convert an existing PKE basic unit into an IEC 60947-2 circuit breaker for protecting cables and lines. When used in conjunction with the SmartWire-DT module, the devices also enable the data of switches and consumers to be read out and monitored so that plant availability and energy consumption can be optimised with a minimum of effort. The modular PKE system consists of the PKE basic device and a tool-
less pluggable trip block, enabling any retrospective changes to the switch to be made simply and conveniently. The user benefits from a high degree of flexibility and saves time and costs with the conversion, as a complete exchange of the switch is unnecessary. The concept also allows optimised stock keeping. Eaton offers the new trip blocks in the two Standard and Extended variants. With the help of the new PKE-
SWD-CP function element, the Extended models allow the PKE circuit breaker to be connected to the SmartWire-DT connection system. This offers a solution for monitoring the circuit breaker and the protected loads in the energy distribution system. Both variants of the PKE trip blocks for system protection are available in the two current ranges 15 to 36A and 30 to 65A, and in two different mounting widths 45mm and 55mm. The PKE circuit breaker offers a short circuit breaking capacity of 50kA/ 400V. The trip blocks for system protection enable the user to adapt the tripping threshold of the electronic
short circuit releases to different cable lengths and cross sections. An imbalanced load has no effect on the tripping behaviour so that the PKE circuit breaker also offers reliable protection for single-phase loads with different rated currents. When the trip blocks are connected to SmartWire-DT using the PKE-SWD-CP modules, the user can set
the size of the data provided by selecting the appropriate data profile. Besides the basic data of the circuit breaker, the current values of each individual phase can be transferred.
Eaton
www.eaton.uk.com/electrical T: 08700 545 333 8 OCTOBER 2014 | ELECTRICAL ENGINEERING Enter 201
features redesigned, curved colour coded toggles and a clearly marked front face, making it even easier to use. It also comes complete with a white or
smoked front cover, providing the option to match the product to the interior. Looking more holistically, Resi9 can
also accept a wide range of control devices, making it suitable to be used in conjunction with a wide range of devices as part of a cohesive energy management strategy. This will come as a major benefit as more and more homeowners and businesses gravitate towards sustainable solutions. Resi9 also offers peace of mind as it is guaranteed to all applicable standards and certification by independent authorities. Indeed, these are testing times for the installer, tasked with a challenging marketplace and ever complex product specification processes. However, the good news is that leading manufacturers are continuing to develop new innovations to make easier work of the job in hand.
Schneider Electric
www.schneider-electric.com T: 0870 608 8608
Enter 202 / ELECTRICALENGINEERING
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