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Digitrax PS515 DCC Power Supply Performance Report
by Larry Maier
DCC Power Supplies | TTE/XFR8 Test | PS515 Test | Buy TTE/XFR8 | Buy PS515
I tested the PS515 for output voltage and current capability. I first ran the test with the current set to 5 amps. The PS515 tripped off 70 minutes into this test. The test results are shown in the graph below. Final output voltage was 15.19 volts just before the protection circuit tripped. This is fine for the Digitrax, Lenz and NCE boosters.
I also performed the test at a 4 Amp load, the test results are shown in the graph below.
The last test I performed was a loading test. The results are graphed below. The unit is useable for short-term loads up to about 7 amps. Voltage at a 7-amp load was 14.25, again within the acceptable range for the reference boosters. The PS515 turned off almost immediately at a load of 7.38 amps. At this load, the voltage had fallen to 13.40 volts.
Attachment : Source Excel Data (converted to html)
Sheet 2: 5AmpData
| Time |
Current |
Temperature |
Voltage |
| 0 |
5.02 |
22.5 |
15.39 |
| 3 |
5.02 |
22.8 |
15.34 |
| 37 |
5.02 |
36.8 |
15.12 |
| 51 |
5.02 |
42.5 |
15.07 |
| 58 |
5.02 |
45 |
15.05 |
| 67 |
5.01 |
48.2 |
15.19 |
| 70 |
0 |
49 |
0.28 |
| 74 |
0 |
50.3 |
0.28 |
| 93 |
0 |
51.9 |
0.28 |
Sheet 6: 4_00AmpData
| Time |
Current |
Temperature |
Voltage |
| 0 |
4.01 |
51.5 |
15.70 |
| 5 |
4.01 |
50.9 |
15.62 |
| 53 |
3.99 |
56.4 |
15.56 |
| 80 |
4.02 |
59.6 |
15.47 |
| 163 |
4.02 |
65.3 |
15.43 |
Sheet 7: LoadingData
| Current |
Voltage |
| 0.00 |
17.33 |
| 0.25 |
17.15 |
| 0.50 |
17.05 |
| 0.75 |
16.97 |
| 1.00 |
16.88 |
| 1.50 |
16.70 |
| 2.00 |
16.52 |
| 2.50 |
16.35 |
| 3.02 |
16.13 |
| 3.50 |
15.94 |
| 4.00 |
15.71 |
| 4.50 |
15.53 |
| 4.99 |
15.34 |
| 5.50 |
15.10 |
| 6.01 |
14.89 |
| 6.48 |
14.64 |
| 6.99 |
14.25 |
| 7.38 |
13.40 |
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