Vanguard DigiTMR S2 - Manual (Page 73)

REV 1 DIGITMR S2 USER’S MANUAL
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Table 2. Descriptions of Tabulated Test Results Elements
Item
Number
Description
1
Contact time shown in both milliseconds and cycles. In the sample report shown in Figure 16, contact
channel #1 time is 181.50 ms or 10.89 cycles.
2 Contact bounce duration (1.70 ms).
3 Contact wipe (0.77 inches).
4 Delta time - the slowest contact and fastest contact differential time (0.10 ms).
5
The AC current sensor time is shown as “CT Channel Analysis” time in milliseconds and cycles. The
CT time in the example shown is 184.70 ms or 11.080 cycles. Since the report was generated to show
both Quick-Shot Mode and Travel-Time Mode data, both CT time and contact-travel readings are
shown on the report.
6 Breaker contact stroke (7.08 inches).
7 Contact velocity calculation (5.72 feet per second).
8 Contact over-travel distance (0.29 inches).
9 Contact bounce-back distance (0.16 inches).
10
Contact velocity calculation taken from two analysis points:
Analysis point #1 is 1.00 inch from the fully closed position.
Analysis point #2 is 5.00 inches from the fully closed position.
11
The DC power supply was monitored during the test. The nominal voltage was 52V and the minimum
voltage was 37V.
12 Initiate current (5.1 Amperes)
13 Timing shot duration (1 second)
14 Insertion resistor time was not measured since there was no insertion resistor in this test.
15
Trigger mode was internal therefore the timing window started at the same time when the DigiTMR
energized the circuit breaker closing coil circuit.