These timers are
microprocessor based digital timers and are very useful to measure
closed, trip and trip-free timings of breakers.
FEATURES:
- Microprocessor based technology.
- Very compact and lightweight.
- Very accurate measurements.
- Economical.
TECHNICAL SPECIFICATIONS:
| Range |
Up to 999 millisecond. |
| Display |
LCD type. |
| Accuracy |
0.5%. |
| Commands |
Close & trip for breakers.
Trip free : C O - C timing of breakers.
|
| Reset |
Resets the counter to zero. |
| Input |
a) Potential free contacts across R-Y-B and common.
b) +ve and close or +ve and trip can withstand for 220V AC/DC and 6 Amp.
|
| Supply |
230V AC, single phase, 50Hz. |
| Enclosure |
The instrument is housed in plastic molded cabinet. |
SPECIAL NOTES:
- The timer will not start if all three contacts are not in same condition.
- The timer will not start for trip free mode if all poles are not open. Display will state the condition of each pole.
- You can check
the bounces when close command is issued. Once all the three phases
closed change bounce switch to bounce position. The timer will scroll
for R, Y, and B phase with indicating No. of bounces and close duration
for each bounce. Duration is indication by a, b, c, and so on for 6
bounces. Each phase scrolled for approximately 6 seconds
- If timer does not stop it will indicate that time has exceeded 10 seconds and it will be displayed according to phase.
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