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EA Elektro-Automatik GmbH
Helmholtzstr. 31-37 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
PSB 9000 3U Series
Suggestions for phase assignment:
Single unit (5 kW)
Multiple units (5 kW), balanced
PSB
L1(A)
L2(B)
PSB
L2(B)
L3(C)
PSB
L1(A)
L3(C)
oder / or / ou /
или
/
或者
oder / or / ou /
или
/
或者
L2
L3
L2
L3
L2
L3
PSB 1
5 kW
PSB 2
5 kW
PSB 3
5 kW
L1
(A)
L2
(B)
L3
(C)
L2
L3
L2
L3
L2
L3
Multiple units (10 kW), balanced
Multiple units (5 kW & 10 kW), almost balanced
PSB 1
10kW
PSB 2
10kW
PS 3
10kW
L1
(A)
L2
(B)
L3
(C)
L1
L2
L3
L1
L2
L3
L1
L2
L3
PSB 1
5kW
PSB 2
10kW
PSB 3
5kW
L1
(A)
L2
(B)
L3
(C)
L1
L2
L3
L1
L2
L3
L1
L2
L3
2.3.4.5
Installation concept for energy recovering devices
A PSB 9000 device recovers energy and feeds it back into the local power grid. The generated current adds to
the grid current (see schematic below) and this can lead to an overload of the existing installation. Considering
any two outlets, no matter of what kind they are, there is usually no extra fusing installed. In case of a defect in
the AC part (i.e. short-circuit) of any consumer device or if there are multiple devices connected which could take
a higher power, the total current could flow across wires which are not laid out for this higher current. It could lead
to damage or even fire in the wires or connection points.
In order to avoid damages and accidents, the existing installation concept must be taken into regard before install-
ing such recovering devices. Schematic depiction with 1 recovering device and consumers:
PSB 9000
<28 A
32 A
Grid
Consumer 2
Consumer 2
Consumer 1
Consumer 1
up to 60 A
When running a higher number of recovering, i. e. energy backfeeding units on the same leg of the installation,
the total currents per phase increases accordingly.
