arrester. The arrester’s TOV capability must meet or exceed the expected temporary
overvoltages of the system.
Table 3 below defines the TOV capability of all of GE’s arrester designs in per unit of the
MCOV. The table includes the duration and magnitude of temporary overvoltages that may
be applied to the arrester before the arrester voltage must be reduced to the arrester’s
continuous operating voltage capability. These temporary overvoltage capabilities have
been defined independent of system impedance and are valid for the voltages applied at the
arrester location