Surge Killers For L-Load - Fuji Electric FRENIC-HVAC User Manual

4.3.2

Surge killers for L-load

A surge killer absorbs surge voltage induced by L-load of an electro magnetic switch or solenoid valve.
Use of a surge killer is effective in preventing the electronic equipment, including inverters, from
damage or malfunctioning caused by such surges. Surge killers cannot be used with the 575V class
series.
Install a surge killer near the power coil of the surge source. Connected to the inverter's power source
side, as shown in Figure 4.3, a surge killer absorbs the surge voltage, preventing the electronic
equipment from damage or malfunctioning. (The surge killer is available for inverters of 5 HP or less.)
Refer to the catalog "Fuji Surge Killers/Absorbers (HS118: Japanese edition only)" for details. These
products are available from Fuji Electric Technica Co., Ltd.
Note: Do not connect the surge killers to the secondary (output) circuit of the inverter.
Figure 4.3 Dimensions of Surge Killer and Connection Example
4-10