Board type b class and c class surge arresters must be connected in parallel to the system. The total length of the connection conductors is l l1l2l3.
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Spd connection diagram. The surge protection device spd is a component of the electrical installation protection system. Large single surge events such as lightning can reach hundreds of thousands of volts and can cause immediate or intermittent equipment failure. Connection leads should be cut to minimum possible length. Never coil or push aside excess length. Connection leads should be cut to minimum possible length. Dc systems measure from positive and negative input.
J17it can also be used at all levels of the power supply network. This device is connected in parallel on the power supply circuit of the loads that it has to protect see fig. For high frequency currents the impedance per unit length of this connection is approximately 1 µhm. Dc systems measure from positive and negative input. Confirm that the spd is correctly rated for the system to which it is to be connected to. Measure l n l g l l and n g of the ac system.
Surge protective devices are designed to protect against transient surge conditions. Confirm that the spd is correctly rated for the system to which it is to be connected to. Accordingly a spd should be chosen with a voltage protection level up adapted to protection of the equipment see fig. In class b c class section 16mm2 minimum we have to use a minimu. Never coil or push aside excess length. Measure l n l g l l and n g of the ac system.
Gallery of Spd Connection Diagram
