Battery Monitoring; Battery Symmetry Connections; Battery Symmetry - Double-Point Measurement; Battery Terminology - Eltek Minipack Quick Start Manual

Battery Monitoring

Battery Symmetry Connections

Each Smartpack controller is equipped with 8 battery symmetry inputs (on connectors
CON4 and CON3), enabling symmetry measurement of:
You can implement any of these methods using one or two Battery Connection Kits (see
Cable
Eyes
the illustration next page) and the appropriate number of Battery Symmetry Kits, which
contain a single cable strand with suitable cable eyes, etc.
Battery Symmetry
Mid-point Measurement
One measurement per string
Card, Art. 200576
2-1
Serial Switches
X:****
Set all 4
switches
OFF (up)
-
+
−
+ B
—
(-48V) Outer
Terminal
Block1
Intercell Links
Battery Symmetry
Double-point Measurement
Two measurements per string, from the
middle to the outer terminals
Card, Art. 200576
2-1
Serial Switches
X:****
Set all 4
switches ON
(down)
-
+
- + -
—
(-48V) Outer
Terminal
Block1
Intercell Links
Quick Start Guide Minipack PS System
• 8 battery strings
using the Mid-Point Measurement Method
• 4 battery strings
using the more accurate Double Mid-Point Measurement Method
• 2 battery strings
using the even more accurate Block Measurement Method
+ - + - +
−
(From
+
0V Outer
Terminal
Notice that, if you open the serial switches in card, Art.
200576 ⎯ setting all to OFF (up) ⎯ you have to connect the
+ and – wires of every symmetry input.
3
+
+ - + - +
Block3 Block4
+
0V Outer
Terminal
356808.103, v1-2006-12
Miscellaneous
Battery Symmetry
Block Measurement
Four measurements per string
(Serial measurement)
Card, Art. 200576
2-1
Serial Switches
X:****
Set all 4 switches
ON (down)
-
- +
—
(-48V) Outer
Terminal
Block1
Intercell Links

Battery Terminology

Battery Block, Battery String and Battery Bank
48V Battery Bank
Connections
3 5 7
+ + + +
- + - + - +
Block3 Block4
+
0V Outer
Terminal
Battery
Block (12V)
Battery
String #1
(48V)Batt.
Battery
String #2
(48V)
15