Welcome to HZNRKJ!

Differential protection

Product navigation

Product Center

differential protection relay

The company has a very comprehensive product line of differential protection device,The company can produce, busbar differential protection, optical fiber differential protection, line differential protection, generator differential protection, motor differential protection, main transformer differential protection, etc. The product has differential current instantaneous trip protection, Proportional differential protection of two harmonic brake,CT line-break Locking ratio differential protection,CT line-break alarm, very perfect protection function and can be equipped with a standard 485.232 and industrial CAN communication port, optical fiber communication port, Ethernet communication port and other power grid dedicated communications port;The annual sales volume of the company's differential protection device has exceeded 1500 units, which is mainly used in power plants and large substations with 110KV and below voltage levels.
  • 9699 generator-transformer protection relay

    9699 generator-transformer protection relay

    The 9699 differential protection relay of Generator-transformer set is mainly suitable for medium and small generator transformer set differential protection.One generator and one transformer use 9699A generator transformer differential protection,two generator and one transformer use the 9699B generator-transformer set,The generator transformer protection relay is composed completely of 9681 main transformer high backup protection relay and 9689 generator grounding protection relay.

  • 986 busbar differential protection relay

    986 busbar differential protection relay

    The 986 busbar differential protection relay is suitable for the 110KV and the following various voltage levels of a single bus、Single parent segment、 duplicate-busbar and section switch or the Bus circuit breaker and the bus of various main connection modes of the bypass circuit breaker,The bus allowed no more than 20 components and lines to connect(which included the bus-couple),the 986 Microcomputer busbar differential protection relay is based on the DSP(main Frequency reach to 100M)and the Dual CPU hardware platform of 32 single chip,High precision A/D ensures the measurement accuracy.

  • 9696 motor differential protection relay

    9696 motor differential protection relay

    9696 motor Differential protection relay mainly used in the 10KV、6KV、3KV such differential protection of high voltage motor,The protection device has the differential protection;Proportional differential protection of two harmonic brake、CT line-break locking ratio differential protection、CT line-break alarm such protection function、 adopt to a variety of different capacity of the motor main protection;The protection device is generally used in conjunction with a 973 or 974 motor protection relay,be a complete motor protection;

  • 9695 transformer differential protection relay

    9695 transformer differential protection relay

    the 995 transformer differential protection relay is be appropriate for the transformer differential protection of the 35KV、10KV、6kV to the 400V.and the device not only have the function of the differential instantaneous trip protection but also the Perfect differential protection function of Proportional differential protection of two harmonic brake、CT line-break Locking ratio differential protection、CT line-break alarm.also the 485 communication、Ethernet communication、Optical fiber communication interface,is the best choice for two winding distribution transformer differential protection.

  • 9698 generator differential protection relay

    9698 generator differential protection relay

    9698 generator differential protection relay mainly used in the Small and medium sized differential protection device , water tribute generator used the 9698A differential protection, which has the function of differential current instantaneously trip protection,Proportional differential protection(with Two harmonic brake,CT line-break locking),CT line-break alarm,Non electricity protection,Transverse differential protection,also the multiple communication interface of the 485 communication, Ethernet communication and Optical fiber communication.

    • 9699 generator-transformer protection relay

      9699 generator-transformer protection relay

      The 9699 differential protection relay of Generator-transformer set is mainly suitable for medium and small generator transformer set differential protection.One generator and one transformer use 9699A generator transformer differential protection,two generator and one transformer use the 9699B generator-transformer set,The generator transformer protection relay is composed completely of 9681 main transformer high backup protection relay and 9689 generator grounding protection relay.

    • 986 busbar differential protection relay

      986 busbar differential protection relay

      The 986 busbar differential protection relay is suitable for the 110KV and the following various voltage levels of a single bus、Single parent segment、 duplicate-busbar and section switch or the Bus circuit breaker and the bus of various main connection modes of the bypass circuit breaker,The bus allowed no more than 20 components and lines to connect(which included the bus-couple),the 986 Microcomputer busbar differential protection relay is based on the DSP(main Frequency reach to 100M)and the Dual CPU hardware platform of 32 single chip,High precision A/D ensures the measurement accuracy.

    • 9696 motor differential protection relay

      9696 motor differential protection relay

      9696 motor Differential protection relay mainly used in the 10KV、6KV、3KV such differential protection of high voltage motor,The protection device has the differential protection;Proportional differential protection of two harmonic brake、CT line-break locking ratio differential protection、CT line-break alarm such protection function、 adopt to a variety of different capacity of the motor main protection;The protection device is generally used in conjunction with a 973 or 974 motor protection relay,be a complete motor protection;

    • 9695 transformer differential protection relay

      9695 transformer differential protection relay

      the 995 transformer differential protection relay is be appropriate for the transformer differential protection of the 35KV、10KV、6kV to the 400V.and the device not only have the function of the differential instantaneous trip protection but also the Perfect differential protection function of Proportional differential protection of two harmonic brake、CT line-break Locking ratio differential protection、CT line-break alarm.also the 485 communication、Ethernet communication、Optical fiber communication interface,is the best choice for two winding distribution transformer differential protection.

    • 9698 generator differential protection relay

      9698 generator differential protection relay

      9698 generator differential protection relay mainly used in the Small and medium sized differential protection device , water tribute generator used the 9698A differential protection, which has the function of differential current instantaneously trip protection,Proportional differential protection(with Two harmonic brake,CT line-break locking),CT line-break alarm,Non electricity protection,Transverse differential protection,also the multiple communication interface of the 485 communication, Ethernet communication and Optical fiber communication.

    Online Service

    jibaonanrui

    209585994

    209585994

    SHARE