Reliable Insulation Monitoring in DC Charging Stations
DC charging stations are ideal for quickly charging electric vehicles. They use an unearthed DC power supply system (IT system) to ensure electrical safety. An insulation monitor (IMD) oversees the entire charging circuit up to the vehicle. DOLD offers IMDs for voltages up to DC 1000 V, featuring adjustable alarm thresholds and simple rotary switch adjustments.

Safe System Shutdown
In emergencies, charging stations must be able to shut down safely and quickly. The SAFEMASTER series emergency stop module UF 6925, only 17.5 mm wide, provides maximum safety up to PL e, SIL 3. It is suitable for mobile applications due to its wide voltage range (DC 8 to 36 V) and resistance to voltage fluctuations.

Reliable Monitoring of Frequencies and Speeds Without Sensors
The SAFEMASTER S series frequency and speed monitor UH 6937 is ideal for mobile applications. It safely switches off in cases of overfrequency or underfrequency, preventing dangerous situations. It can monitor a wide range of AC voltages and is easy to retrofit.

Electrical Safety During AC Charging
Standardized protective measures, such as residual current protective devices (RCD), are necessary for charging electric vehicles at public stations. DOLD's residual current monitors (RCM) display fault currents and signal critical states early, allowing for preventive maintenance. They are available as printed circuit boards for integration into existing systems.

Safety Relay with Forcibly Guided Contacts
DOLD offers PCB relays with up to 8 forcibly guided contacts, adaptable to various requirements. They feature a compact design and minimal energy consumption.

Wireless Functional Safety
The SAFEMASTER W series wireless safety system UH 6900 enables safety-oriented transmission of emergency stop and control functions over long distances (up to 800 m). It is TÜV-certified for safety requirements up to cat. 4 / PL e or SIL 3, suitable for extensive installations and mobile applications like autonomous vehicles.