Higher demands on battery and electrical power supply systems in the automotive industry, as well as new hybrid and improved conventional technologies, are leading to new requirements for manufacturers of electrical components.
Newly developed battery systems generate high DC voltages in order to achieve the same power levels as conventional combustion engines. Separating these loads (safety requirements) by means of main switches or load break switches also leads to the undesirable development of heavy arcing between the contacts.
These severe burn marks can damage the contact to such an extent that the contact or the main switch will no longer function.
One of the most important tasks for a manufacturer of DC high-voltage relays will therefore be to reduce the switching time. This should be done in such a way that the arc cannot fully develop, thereby reducing the burn-in time on the contact.
The new high-voltage DC relays from KISSLING meet this requirement and also ensure safe switching of the desired voltage and current levels. This is achieved by a new and dynamic control system. This is in contrast to the vacuum-drawn gas-filled ceramic pressure chamber of conventional systems. These chambers can start to ‘leak’ with all the consequences that entails.
The control system is the basis for trouble-free switching and ensures optimum service life even under these extreme loads. The design of this new relay is based on the well-known and proven design of the other KISSLING relay series and is easy to install.
- Lower replacement costs – based on consistent product characteristics
- Maximum safety – in case of emergency and overload
- Highly suitable – for all conditions due to a high degree of protection ( IP67/IP6K9K)
- Reduced adjustment costs – due to integrated PWM electronics
In the diagram above, you can see that 85, 86 and INIT are the most important connections for operating the relays. The coil is operated in an energy-efficient manner by pulse width modulation (PWM). The STAT output is used as an auxiliary electrical contact and monitors the number of switching cycles. The STAT output can also be used for customer-specific requirements.
On request, the relay is also available without the electronic circuit. In this case, the customer provides their own PWM functionality in accordance with KISSLING’s product specifications. A mechanical auxiliary contact can also be integrated into the relay.
For more information about KISSLING, please contact us using the contact form. We will be happy to help you!
