Linz, Austria

Delivery: 1999-2001

In 1998 the Linzer Elektrizitäts-, Fernwärme- und Verkehrsbetriebe AG (ESG) decided to purchase 19 articulated low-floor trolleybuses with an option for 4 low-floor solo trolleybuses. The bus manufacturer is Volvo Busse, Austria. The modern trolleybus is user-friendly and has many ecological advantages, like e.g. low exhaust, odour and noise emissions. Aspects, which become more and more important today.

Electrical equipment from Kiepe fulfils the cost-effective requirements. The importance of the "overall concept" is higher than before, as the operator is shown up-to-date methods of repair and maintenance of his vehicles. Following Kiepe innovation assist the operators to reduce vehicle operating costs during their service lives:

» Kiepe has many years of experience with data bus systems in the transport sector. The Kiepe data bus, originally need in the car industry on CAN basis, used for networking of the components inside the vehicle. In addition, the Kiepe data bus system allows reduction of cabling in the vehicles.

» With the advent of components such as IGBT and electronic semicon-ductors it is possible to group several devices in a smaller area inside the compact sturdy roof equipment container.

» Control and monitor of electrical components (current collector and main contactors) is performed via Kiepe´s BISS data bus control com-posing of microprocessor and control modules.

» Well known Kiepe diagnostic unit can diagnose problems of all major components such as traction converter, power converter, vehicle control equipment, heating systems and BSM microprocessor control units.

» A diagnostic laptop computer plugged in the PC connection gains access to central diagnostic to monitor all devices connected to the data bus system.

» Robust asynchronous cage rotor induction motors included in well proven three-phase traction system requires very little maintenance.

The new design of the roof equipment container deserves special attention: The well-tried IGBT direct pulse converter, the IGBT on-board converter, the converter control, the braking resistor, the network filter and the device panels for the compressor and heating control are all integrated in this roof equipment container. The prescribed double insulation is inside the roof equipment container and thus protected from environmental influence. All the active components in the roof equipment container are only temperature-dependently force-ventilated with a three-phase fan free of maintenance.

The cover may be swing open at either side and this allows easy access for maintenance and fast exchange of components.
Extensive functional cheeks are carried out under load at Kiepe against latest standards and when satisfied units are released for mounting on to vehicle roof.

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