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TR-80-R Intelligent Buchholz Relay.jpg

TR-80-R Intelligent Buchholz Relay

TR-80-R Intelligent gas relay is a basic device applied to oil immersed transformer. It can monitor the accumula- tion of gas generated by leakage current, arc, flashover and other faults in the transformer in real time, and send out alarm signals when the gas reaches a certain amount; In case of serious internal fault of transformer (such as inter turn short circuit, etc.), use the oil flow surge phenomenon generated at this time to trigger contact connection, and quickly lock the main circuit of transformer to protect the transformer.

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    Up to three alarms, three locks, triple redundancy design, improve product reliability.
    It can monitor the volume of gas gas online in real time and transmit it to the background through RS485 digital signal (compatible with 4-20mA analog signal); The ex- ternal independent gas volume monitoring chamber iso- lates the interference on the volume monitoring caused by the operation of other components.
    The all-metal high-strength movement framework is used to stabilize the flow rate setting value of up to 2.5 m/s.
    The float main shaft is equipped with imported precision bearings to increase bearing support and eliminate the hidden danger of wear due to float shaft bore.
    The streamlined float ensures stance stability at high oil speeds.
    Protection grade reaches IP67, strong salt spray resist- ance environment (360 hours NSS salt spray test).

    Material of main components

    Case

    aluminum alloy

    Observation glass

    UV resistant protective glass

    Working environment

    Oil temperature

    - 40 ℃ ~+100 ℃

    Ambient temperature

    - 40 ℃ ~+70 ℃

    Action point properties

    Setting range of oil speed alarm

    0.7~2.5m/s, accuracy ± 10% ;

    Three pairs of dry spring contacts for light and heavy gas alarm (three alarms and three locks)

    Electronic auxiliary action point

    1 pair

    Installation environment

    protective cover is required for outdoor use，Suitable for high altitude environment

    Cable connector

    M25X1.5 (for action point), one on both sides of the junction box;4X0.5 Shielded cable (for remote signal)

     

     

     

    Electrical characteristics

    Main action point

    Maximum switching power of: 50W (5A)，

    Maximum switching current: 3A

    Auxiliary action point

    Maximum switching power 150W (5A)

    Mainboard power supply

    18~36 VDC

    Power frequency withstand voltage

    between reed tube contact groups, to ground: 2.5KV DC/AC 1min；Dry contact normally open, auxiliary contact normally open: 1.0KV DC/AC 1min

    Analog output

    4~20mA

    Digital signal output

    ModBus RTU RS485

    Number of contacts

    up to seven pairs, six pairs of dry spring contacts, and one pair of auxiliary changeover contacts

    Suitable for high altitude environment

    Degree of protection：IP67

     

    EMC Classes

    IEC 61000-4-2 Class IV

    IEC 61000-4-3 Class III

    IEC 61000-4-4 Class IV

    IEC 61000-4-5 Class IV

    IEC 61000-4-6 Class III

    IEC 61000-4-8 Class V

    IEC 61000-4-9 Class V

    IEC 61000-4-10 Class IV

    IEC 61000-4-12 Class III

    IEC 61000-4-17 Class III

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