• How to use miniature high power relays? Introduction to the use of miniature power relays

    How to use miniature high power relays? Introduction to the use of miniature power relays

    A power relay is a device that can produce a jump in one or more electrical output circuits when the input (or excitation) meets certain prescribed conditions, and can be used in a neutral point directly grounded system, as The directional element of zero sequence current protection. It has a wide ... read more

    22-10-2021 News
  • Why install a trip and lockout relay? What's the role

    Why install a trip and lockout relay? What's the role

    Locking refers to "self-locking", which automatically locks the state of the relay after it is energized and keeps the loop connected, even if the control current is turned off at this time, it will not change its state.That is to say, when the power is turned on and the control current is turned of... read more

    09-10-2021 News
  • Benefits of a Single Phase Relay

    Benefits of a Single Phase Relay

    Single-phase relay protection consists of a transformer and its load protection system. A single-phase relay has an output stepped by a control circuit that is normally a switching device such as a solenoid or a diode. This control is usually an alternating current source and controls the voltage t... read more

    26-09-2021 News
  • Mini Current Transformer - For Low Voltage Electrical Appliances

    Mini Current Transformer - For Low Voltage Electrical Appliances

    Great Electrical Co, Ltd. is an Official Partner of the Academy of Model Engineers (AMEA) which is an international organization for model engineers. It is one of the oldest and the largest electric model and transformer producers in China. Great Electrical Co, Ltd has been in business since 1830 ... read more

    26-09-2021 News
  • What is the difference between safety relay and general relay?

    What is the difference between safety relay and general relay?

    1. Larger appearance The dimensions of safety relays are different from ordinary relays, and safety relays are larger. 2. Modules instead of components The safety relay is a module, not an electronic component like an ordinary relay. 3. Color The safety relay has its own color, which is generally ... read more

    17-09-2021 News
  • Which is better, solid state relay or mechanical relay

    Which is better, solid state relay or mechanical relay

    Electromagnetic relays and solid state relays are one that is afraid of shock and the other is not afraid of shock; the former is afraid of magnetism and the latter is afraid of induced electricity; one is low in heat and the other is high in heat; one is low in price and the other is high in pric... read more

    09-09-2021 News
  • What are the main factors affecting the current transformer error

    What are the main factors affecting the current transformer error

    Due to the structure and material properties of the current transformer core, the current transformer has an exciting current Í0, which causes errors. The main factors affecting the current transformer error are (1) The influence of primary current. EBW shunt resistor When the primary current of ... read more

    25-08-2021 News
  • What is the difference in the principle of action between a voltage transformer and a current transformer?

    What is the difference in the principle of action between a voltage transformer and a current transformer?

    The main difference is that the working state is very different during normal operation, which is shown as follows:1) The current transformer can be short-circuited for the second time, but must not be open; the voltage transformer can be opened for the second time, but must not be short-circuited... read more

    25-08-2021 News
  • Precautions for the selection and application of solid state relays

    Precautions for the selection and application of solid state relays

    Commonly used solid state relays include HS, GTJ, JGW, KW, G3FD-×03SN, GZ1-L, G22-L, SZT036, JGJ, JGZ and other products. When selecting a solid state relay, first consider the type of solid state relay and adjust it with a load (the main technical guidelines include additional input voltage, inpu... read more

    19-08-2021 News