T&R 200A-3PH mk2, Руководство по эксплуатации и техническому обслуживанию

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1 CONTACT mode using C1 is used to time auto-reclose relays (connected to a breaker
auxiliary contact). The time recorded is the time between the breaker opening and the first re-
closing of the breaker.
Current
Contact set 1
Timer
Output ON
pressed and released
t
Current switches
off when contact
changes for 2 nd time
Figure 1.10 1 contact mode using contact set 2 (C2)
1 CONTACT mode using C2 is suited to drop-off tests.
1.3.12.5 Timer mode: 2 CONTACT (contact 1 changes first)
Dual contact mode uses both contact set 1 and contact set 2. The timer starts on the first
change of contact set 1 after the output is switched on, and stops on the first change of
contact set 2. The output of the unit is automatically switched off when the timer stops.
1.3.12.6 Timer mode: 2 CONTACT MART (Multiple Auto-Reclose Timing)
This mode is used to time multiple re-close actions on an auto re-closing relay. 100 time
results can be stored and logged to the USB memory key.
The auto re-close relay breaker trip contacts are connected to contact set C2 and the breaker
closed contact connected to contact set C1. If a breaker state signal is required this can be
obtained from the contact on the T&R link connector.
MART mode is triggered by contact set 2 changing state before contact set 1 in 2 contact
mode.
•
Start the test by pressing the ON pushbutton. The timer starts when the output is
switched on.
•
On the 1st change of C2 the timer result is stored as t0. The timer resets and restarts,
and the output is switched off.
•
On the 1st change of C1 the timer result is stored as t1. The output switches back on
automatically, and the timer resets and restarts.
•
On the 2nd change of C2 the timer result is stored as t2. The timer resets and restarts,
and the output is switched off.
•
On the 2nd change of C1 the timer result is stored as t3. The output switches back on
automatically, and the timer resets and restarts.