HVTest HT-802, Руководство пользователя

Страница: 49 / 78

49
Respectively enter the current setting of section 1, 2, 3 and 4 according to the protection
setting. Normal state time should be more than the protection entire group of reversion time,
typically 20 seconds; fault state time should be more
than zero sequence four sections time, usually 4
seconds. Faulted phase voltage is less than 58V,
general 20V.
2. [Test item]
Fault types: AN, BN and CN single or multiple
options. [Positive direction] is the fault voltage ahead
of the fault current 75 degrees; [reverse direction] is
the fault voltage ahead of the fault current 225
degrees.
Take two values for each zero-sequence current experiment, respectively, 1.05 and 0.95
times of fixed value, rules order: this paragraph action: 1.05 times is action for this section;
0.95 times is action of next section. When the current is greater than 30A, the output can be
two-phase in parallel. At this time, the fault type can only be one, such as AN or BN.
3. [Fault type]
[Closing angle]: 0 degrees; [line impedance angle]: 75 degrees; [zero sequence
compensation coefficient KX]: 0.67.