| 摘要 |
<p>41PR-3285 LIGHTNING ARRESTOR A metal oxide varistor (MOV) is directly electrically connected between a line conductor and ground to dissipate the energy associated with voltage surges appearing on the line conductor. A thermostatic switch, in the form of a resilient arm held in electrical connection with one of the MOV electrodes by low melting point solder, opens in response to a failing MOV to insert a spark gap electrically in series with the MOV Overvoltage protection is thus maintained, albeit limited to higher level voltage surges.</p> |
