プロトラッド List of Products and Services

The RCMS series is a residual current monitor for grounding wiring systems, compatible with AC/DC circuits. (Residual current refers to the current that leaks from a circuit that does not return to its original path due to equipment failure or short circuits.) The measurement ranges for residual current and frequency are as follows: Frequency: DC, 15Hz to 20kHz; Residual current (RMS value): 2mA to 70A. This device can measure up to four circuits, allowing for individual alarm set points for each circuit. In addition to residual current, alarms can also be assigned to device errors and current transformer connection errors, making it easier to identify the cause of errors. Furthermore, it is possible to output the residual current value as an analog signal, enabling control while monitoring current values not only with this device but also with PCs and PLCs. It is equipped with a Modbus RTU interface for communication with higher-level systems. Parameter settings can be performed via this Modbus RTU, but it is also possible to use a smartphone app called Bender Connect App for NFC communication.

• Insulation Tester

The iso685 series is an insulation monitoring device designed for ungrounded wiring systems (IT systems) in accordance with the international standard IEC 61557-8. It can be universally applied in AC/DC circuits that include DC components, such as inverters and rectifiers. In particular, the iso685-D model integrates a high-resolution graphic LCD display with operational controls, allowing for accurate continuous monitoring of insulation resistance while live. It employs Bender's patented AMP Plus measurement method in combination with other measurement techniques to automatically adapt to fluctuating ground leakage capacitance, ensuring reliable measurements. The insulation resistance values can be set in a range from 1 kΩ to 10 MΩ, with two individually configurable alarm setpoints. Additionally, it features the isoGraph function, which graphically displays insulation resistance values over time, and a history memory function that stores 1,023 alarm messages with timestamps (3-day buffer). With the built-in web server and Modbus TCP/RTU interface, remote data reading and configuration changes are also easy. Furthermore, it is possible to extend the applicable voltage range through coupling devices.

• Insulation Tester