15 - 20 June
DC/DC transformers allow the safe operation of consumers with voltage rates that are differing from the board voltage in the vehicle. For instance, many products of the information, entertainment or navigation technology are almost exclusively only available in 12V technology. Then, an operation with 24V board mains supply is possible by means of a suitable DC/DC transformer from 24V to 12V, without requiring to install an own 12V battery circuit.The galvanic isolation between input and output of the units by separation of the ground paths effects an outstanding interference suppression (filtering). Even in case of long connection cables, perfect ground ratios being independent of each other are ensured on both sides, which is advisable for large vehicles, containers, roll containers, trailers etc.Galvanisch isoliert ENBesides, the galvanic isolation also ensures absolute protection against 24 V / 12 V punctures, as well as overvoltage in case of loss of mass. Inrush current, peak current or starting current of the consumers are compensated by the short-time 30 % overload capacity of the transformers. One of three stable output voltages can be adjusted at the output, see table. The adjusted voltage is kept stable under most different conditions.Activation of the transformers is effected by a control signal, either manually by means of the ON/Off-switch, or automatically by means of the vehicle's ignition or signal D+ with activated generator. A further possibility is the automatic control by the operating voltage, which is advisable, if a further control signal is not at disposal. The function can be adjusted in 4 stages. A combined control by means of signal and voltage also covers special cases, such as the DC/DC transformer will only become active, if the starter battery had been charged to a certain minimum, if a battery discharge shall be avoided etc.
Automatic Charger for Fire Fighting and Intervention Vehicles according to DIN 14679 of the FNFW
Series VAC-FII in Protection Class II with a protective insulation (2-core mains cable)
The charger series VAC-Fc is designed for installation in the vehicle and complies with all regulations of the FNFW of the valid fire brigade standard DIN 14679 ...
Dual Chargers for intervention vehicles with two independed battery circuits (1 supply battery and 1 starter battery or 2 supply batteries or 2 starter batteries)
The charger series VAC-Station is suitable for application in vehicle halls and complies with all regulations of the FNFW of
the valid fire brigade standard DIN ...
The charging converters ensure optimised and quick charging of the supply battery by the dynamo during driving. In contrast to simple cutoff relays, the charging ...
The VOTRONIC MobilPOWER Inverters of series SMI SINUS convert the battery voltage (12V DC) into pure sinusoidal 230 V alternating voltage (AC) for operation of all ...
The VOTRONIC LED Tank Display is a special development for heavy-duty use in fire fighting vehicles, and it serves for exact remote indication of the tank level.
The VOTRONIC Tank Sensor FW had been developed for level measuring of water and hydrous media in metal and plastic tanks of fire fighting vehicles. The sensor is ...
How much residual charge does my board battery have? Is the battery state really «Full»? Why is energy taken from the battery, although the consumers had been switched-off? ...