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2. [Action time (Slip lock) test ]
Different with operating frequency (return frequency) it changes frequency accord rate,
only a heuristic approach to test. For example : a protection known slip lock value is 3.00Hz /
s, we first set [ slip value ] 3.10Hz / s to test , if the protection does not act, we again set [ slip
value ] to be 2.90Hz / s to test, if the protection acts, then 3.00Hz / S slip lock value is correct.
In short, the principle is the setting slip value greater than the slip lock value the protection
does not act; less than slip lock value, protection should be reliable.
3. Precautions
Some protection only need add three-phase voltage can test, however, some protection
with current locking function because it without loading current, protection do not think the low
cycle load rejection is necessary.
So also need to add the three-phase current. Voltage is about 58V, current is about 1A.
4. Wiring diagram- as shown:
Summary of Contents for HT-802
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