The Bender ISOMETER® isoPV-335 is a specialized insulation monitoring device engineered for unearthed DC drive systems (IT systems), specifically for use in photovoltaic (PV) power plants. It continuously monitors the insulation resistance between the active PV conductors and earth, ensuring the electrical safety and operational integrity of the system. Designed for voltages up to AC/DC 1000 V, the isoPV-335 provides reliable detection of insulation faults, triggering an alarm to prevent equipment damage, service interruptions, and potential fire hazards. Its robust design and adherence to industry standards make it an essential component for maintaining safety and efficiency in modern solar energy installations.