Measurement Computing StrainBook/616 - Manual (Page 114)

Current Requirements (in Amps)
Products DBK30A
14 VDC
DBK30A
28 VDC
DBK34A
12 VDC
DBK34A
24 VDC
TR-40U
15 VDC
StrainBook/616 (alone) 1.93 1.01 2.25 1.15 1.80
WBK16 1.44 0.73 1.68 0.84 1.33
WBK30 0.01 0.01 0.01 0.01 0.01
WBK40 or WBK41 (Note 1) 1.64 0.90 1.92 0.96 1.53
Note 1: Assumes 8 DBK84 modules are attached to P1 and that no DBK46 is installed. Refer to the WBK Options Manual
(489-0902) for details regarding WBK40 and WBK41. Refer to the DBK Options Manual (457-0905) regarding DBK46
and DBK84.
Worksheet for Power Requirements
Product Qty × Amps = Totals
StrainBook/616
WBK16 × =
WBK30 × =
WBK40 or WBK41
Maximum
Amps
StrainBook/616 Product Power Supplies
Item Name/Description Capacity
TR-40U AC Power Adapter
(shipped with StrainBook/616 & WBK16)
90-264 VAC input;
3.33 A @ 15 VDC *
DBK30A Rechargeable Battery/Excitation Module (optional) 12-14 VDC, or 24-28 VDC
3.4 A-hr @ 14 VDC
DBK34A UPS (uninterruptible Power Supply)/Battery Module
(optional)
12 VDC, or 24 VDC
5.0 A-hr @ 12 VDC
Other 10 to 30 VCD source, such as a vehicle battery via a
CA-116 cable.
Depends on source
* Note that some earlier TR-40U units have a limit of 2.7 A @ 15 VDC.
Input voltage to the StrainBook and to the WBK16 expansion modules must be in the range of
10 to 30 VDC and can come from an AC-to-DC adapter or from another source, such as a battery.
Available AC-to-DC adapters include the TR-40U, which has an input of 90 to 264 VAC and an output
of 3.33 amps @ 15 VDC (some earlier units are rated at 2.7 amps @ 15 VDC).
Battery options include the DBK30A, DBK34A, and other 10 to 30 VDC sources, such as car batteries.
The DBK30A provides 14 VDC and when fully-charged has a storage capacity of 3.4 A⋅hr; car batteries
have much higher capacities. The basic formula for battery life is:
Runtime (hr) = Battery capacity (A⋅hr) / Current load (A)
Battery life and performance depend on various factors including battery type, condition,
charge level, and ambient temperature. Be sure you consider these factors, especially
when runtime is critical.
10-10 System Expansion 968594 StrainBook/616 User’s Manual