| Relay protection type | Test Item | Proposed test module | Remarks |
| Line protection | Multi-section over current | Corresponding test items | AC Test | As long as the method is proper, the tests of most relays and
microcomputer protection can be done by the ‘AC Test’ module, which
should be selective learning. |
| Over (under) voltage |
| Sequence component voltage and current |
| Frequency device |
| Power direction protection |
| Reclosing and tansform fault | Corresponding test items | Full Group Test, State Series, Comprehensive Test of Line
Protection of 6-35 KV Microcomputer | Requirement that if the Synchronization check and no-voltage check
test is done, the Ux as the side and side voltage output and the
tester is to use Ua instead of Ux for testing. |
| Distance & Zero Sequence Protection, | The Setting value verification of Distance & Zero Sequence
Protection | Distance & Zero Sequence Protection, Full Group Test, AC Test | "Distance & Zero Sequence Protection” can automatically test
multiple sections, various fault types and other distance and zero
sequence value. |
| Characteristic of Impedance | Characteristic of Impedance |
| Power frequency variation distance | Setting value verification | Distance & Zero Sequence Protection | The fault current should be large enough, such as 10~15A (when CT
is 5A) |
| Compound voltage blocking(directional) overcurrent | Over current, low voltage, negative sequence voltage, sensitive
angle | AC Test, Comprehensive Test of Line Protection of 6-35 KV
Microcomputer | Some of the protection of the "low voltage" and "negative sequence
voltage" input by different terminal, replacing the wiring is
necessary in the test. |
| Low cycle, low voltage load shedding device | Corresponding test items | High-Low Frequency Test, Comprehensive Test of Line Protection of
6-35 KV Microcomputer | If other conditions are satisfied, the device cannot move, please
confirm whether the device also need to input current and switch
contacts |
| The generator transformer protection | Differential protection | Proportional braking characteristic | Differential Protection, Differential Value, AC Test | When the differential protection is used in the differential
protection of generator, it can be regarded as the transformer
protection with the connection type of Y/Y, high and low voltage
side balance coefficient of 1. "Differential protection" module pay attention to the curve
characteristic search and the "differential value" module focuses
on the differential value test. Their combination can test the
differential protection. |
| Harmonic braking characteristic | Differential Protection, Differential Value, Harmonic Test |
| Loss of magnetic protection | Corresponding test items | AC Test | The angle of output voltage and current should be paid attention in
the test. |
| Excitation protection |
| Other protection | Automatic quasi synchronization device | Corresponding test items | Synchronization Test | To do the automatic adjustment test, the line must be in accordance
with the requirements of instruction when testing the input. |
| Busbar differential protection | Corresponding test items | AC Test | Please see the instructions of the BP-2B and RCS-915 of "Nari part
protection" on in the Appendix 6. |
| Optical fiber line differential protection | Before the test to determine whether the device to form a "self
loop", if, then the protection of the action value should be equal
to half of its set value. |
