Eltek Valere Minipack User Manual

Quick Start Guide Minipack PS System 356808.103, 1v2-2008-10
17
Battery Symmetry Connections
Smartpack based systems have many inputs — on the controller and on Battery Monitors
connected to the CAN bus — which are dedicated for battery symmetry measurements.
Controller’s Battery Symmetry Connections ⎯ 48V
Each Smartpack controller is equipped with 8 battery symmetry inputs (on connectors CON4 and
CON3), enabling symmetry measurement of:
• 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
You can implement any of these methods using one or two Battery Connection Kits and the
appropriate number of Battery Symmetry Kits, which contain a single wire with suitable cable lugs,
etc. Refer to the illustration on page 20.
Battery Monitoring Appendix
Battery Terminology
Battery Block, Battery String and Battery Bank
48V Batter
y
Bank
Battery
String #1
(48V)Batt.
Battery
Block (12V)
Battery
String #2
(48V)
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 ever
y
symmetry input.
Card, Art. 200576
Serial Switches
Set all 4 switches
ON (down)
Battery Symmetry
Block Measurement
Four measurements per string
(Serial measurement)
—
(-48V) Oute
r
Terminal
+
0V Oute
r
Terminal
Intercell Links
X:****
Block1
- + + - + -+-
Block4 Block3
7
Symmetry 1.4
+
2-1
Symmetry 1.1
+
-
5
Symmetry 1.3
+
3
Symmetry 1.2
+
Battery Symmetry
Double-point Measurement
Two measurements per string, from the
middle to the outer terminals
—
(-48V) Oute
r
Terminal
+
0V Oute
r
Terminal
Intercell Links
X:****
Card, Art. 200576
Serial Switches
Set all 4
switches ON
(down)
3
Symmetry 1.2
+
2-1
Symmetry 1.1
+
-
Block1
- ++ - + - + -
Block4Block3
Examples of Battery Symmetry Connections on the Smartpack controller — 48V Systems
Battery Symmetry
Mid-point Measurement
One measurement per string
—
(-48V) Oute
r
Terminal
+
0V Oute
r
Terminal
Intercell Links
2-1
X:****
Symmetry 1.1
+
-
Card, Art. 200576
Serial Switches
Set all 4
switches
OFF (up)
Block1
- ++ - + - + -
Block4Block3

Eltek Valere Minipack Specifications

General

Brand	Eltek Valere
Model	Minipack
Category	Power Supply
Language	English