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[Fault type]: AN,BN,CN
；
AB,BC,CA
；
ABN,BCN,CAN and ABC
。
[Short circuit current]: the current value of the fault phase should be greater than the
protection operating current, and generally 5A. (Fault model is valid when the current is
constant).
[Short circuit voltage]: the voltage value of the fault phase should be less than normal
voltage of 57V, and generally 25V. (Fault model is valid when the voltage is constant).
3. [Fault 2]
The second fault generally is transitional fault, which divided into coincidence before
conversion and coincidence after conversion. Coincidence before conversion is generally
defined as 0.1 seconds the failure 1 convert to failure 2; coincidence after conversion is
generally defined as convert to failure 2 as soon as the reclosing action.
Impedance setting: enter impedance setting of a certain segment, sensitive angle 75
degrees, the short-circuit point to be less than setting impedance, to make the protection
reliable action.
[Fault type]: AN,BN,CN
；
AB,BC,CA
；
ABN, BCN, CAN and ABC. It should be different with
fault 1.
[Short circuit current]: the current value of the fault
phase should be greater than the protection operating
current, and generally 5A. (Fault model is valid when
the current is constant).
[Short circuit voltage]: the voltage value of the
fault phase should be less than normal voltage of 57V,
and generally 25V. (Fault model is valid when the
voltage is constant).
4. [Switching value]
The switching input terminals 1, 2,3,5,6 and 7 can access to the protection switching
contacts or split-phase contacts, terminals 4 and 8 is defined as reclosing operation contacts.
Switch type can be [normally open] or [normally closed]. Fault 1 start, switching output
Summary of Contents for HT-802
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