A.4 Energy levels and typical charge times
Stored energy is always greater than the delivered energy. Stored energy is derived from
the peak capacitor charge. Refer to Table 16 for a comparison of the programmed energy
levels delivered by the device to the energy levels stored in the capacitors prior to delivery.
The charge times associated with delivered and stored energy are also provided.
Table 16. Programmed/delivered and stored energy levels with charge times
Energy
Energy
Program-
Charge
Time
Program-
Stored
Charge Time
35 J
39 J
7.7 s
9 J
10 J
2.0 s
32 J
36 J
7.0 s
8 J
9.1 J
1.8 s
30 J
34 J
6.6 s
7 J
8.1 J
1.5 s
28 J
32 J
6.2 s
6 J
6.9 J
1.3 s
26 J
29 J
5.7 s
5 J
5.7 J
1.1 s
25 J
28 J
5.5 s
4 J
4.6 J
0.9 s
24 J
27 J
5.3 s
3 J
3.5 J
0.7 s
22 J
25 J
4.8 s
2 J
2.3 J
0.4 s
20 J
23 J
4.4 s
1.8 J
2.1 J
0.4 s
18 J
20 J
4.0 s
1.6 J
1.9 J
0.4 s
16 J
18 J
3.5 s
1.4 J
1.7 J
0.3 s
15 J
17 J
3.3 s
1.2 J
1.5 J
0.3 s
14 J
16 J
3.1 s
1.0 J
1.2 J
0.2 s
13 J
15 J
2.9 s
0.8 J
0.9 J
0.2 s
12 J
14 J
2.6 s
0.6 J
0.7 J
0.1 s
11 J
13 J
2.4 s
0.4 J
0.5 J
0.1 s
10 J
11 J
2.2 s
a
Energy delivered at connector block into a 75 Ω load.
b
Energy stored at charge end on capacitor.
c
Typical charge time at Beginning of Service (BOS) with fully-formed capacitors, rounded to the nearest tenth of
a second.
The most recent capacitor charge time appears on the programmer display and on printed
reports. See Table 17 for typical charge time values at BOS and RRT. You can evaluate
charge time using the Charge/Dump Test.
Table 17. Typical full energy charge times with fully-formed capacitors
At Beginning of Service (BOS)
7.7 s
At Recommended Replacement Time (RRT)
9.2 s
Medtronic
PROTECTA™ XT DR D314DRG
450
Clinician Manual
Summary of Contents for PROTECTA XT DR D314DRG
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