Tridelta Meidensha surge arrester monitoring
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Tridelta Meidensha not only provides a variety of surge arresters but also offers a selection of monitoring devices. The DCC series surge counters—available with or without leakage current measurement—along with control spark gaps, enable the early detection of potential faults.
Counter: 6-digit display
Minimum sensitivity of the counting current: 100 A (8/20 µs)
High impulse current resistance: 100 kA (4/10 µs)
Voltage drop at 20 kA (8/20 µs): 1 kVs
Measuring scale DCC – M2: 0 to 30 mA irms
Measuring scale DCC – ML2: 0 to 50 mA irms
Maximum counting speed: 5 counts per second
Pulse counters are suitable for arrester types of different manufacturers. The devices do not require an auxiliary voltage supply and are designed for use in the earth line of an arrester. Optionally, the pulse counter type DCC 2 can also be connected in the common earth line of three arresters.
The pulse counter can be mounted by means of M12 gland on the rear lug or with additional bracket by means of screws 2x M12x25. The DCC2 and DCC-M2 pulse counters are equipped with functionally safe electrical circuits and require no maintenance other than cleaning the viewing window and the feedthrough.
Control spark gaps are connected in the ground line of the surge arrester. The surge arrester must be insulated. Characteristic markings on the electrodes of the control spark gap become visible as a result of the discharge processes caused by lightning or switching overvoltages. These markings allow a qualitative and quantitative analysis of the discharge processes through the arrester.
As the first of its kind in condition monitoring devices, smartCOUNT can detect and even differentiate typical faults in a timely manner. To start monitoring, simply install the smartCOUNT app on your NFC-enabled Android phone to access automatically collected data and understand the status of your surge arresters before issues escalate. You’ll receive alerts for leakage current anomalies and can easily identify problems such as dirty enclosures, moisture intrusion, or metal oxide aging. In summary, smartCOUNT provides clear and straightforward monitoring of surge arrester conditions, detecting common failure symptoms efficiently—and it is much cheaper than facing worst-case scenarios.
smartCOUNT is the first device in a new generation of surge arrester monitors. It works with virtually every gapless ZnO surge arrester, providing cyclically logged leakage current records that are precisely measured, even in the critical low current range. It also offers accurate calculations of resistive current and comprehensive surge arrester condition analysis.
By detecting faulty arresters, smartCOUNT helps reduce both planned and unplanned shutdowns, delivering reliable information about their condition. It can be installed on any gapless ZnO surge arrester, enhancing the reliability of both new and existing substations. Tridelta Meidensha’s international team listens to the specific needs and requirements of customers worldwide and has developed this groundbreaking solution for dependable safety.
