System-Manager TAROM | 716148
page 13
V09_45A
no longer controls these loads! Here user training and awareness is vital to protect the customer’s batteries from
damage. Protect these direct loads by installation of safety fuses.
Finally, secure all cables within the System-Manager’s immediate surrounding by strain reliefs. All other components
must also have their wiring be strain-relieved.
6.5 Uninstalling
Uninstall the System-Manager in the opposite way like installing. Firstly all consumer appliances and loads must be
switched off by hand and then the L+/L- main load cables disconnected from the System-Manager. Secondly, the PV
modules’ M+/M- cable must be disconnected. To avoid any sparking, the modules must be disconnected at night or
covered with opaque material before disconnecting the wires. Now, the safety fuses can be removed and the System-
Manager's display should go blank.
In order to avoid short circuits while removing the B+/B- cables, you have to remove the safety fuse from the block
installed at the – battery pole, and also it is a good idea to remove the B+/B- cables from the battery poles before you
disconnect the cables from the System-Manager. Before reinstalling the System-Manager, it should be reset to the
factory pre-set adjustments and reprogrammed for the site.
6.6 Safety Measures
All safety measures we have designed into the System-Manager for its protection cannot prevent damage caused by
wrong installation outside the System-Manager. This is the reason why we urgently recommend the installation of a
safety device on the battery pole in order to prevent damage from short circuits between battery and System-Manager.
6.6.1 Electronic Short Circuit Safety
An electronic short circuit safety device is built into the System-Manager and prevents both destruction of the System-
Manager and the blowing of the safety fuse in case of short circuits on the load terminals. The display indicates this error
as “load current“. After elimination of this fault, the System-Manager automatically switches back to normal operation
after about 30 seconds.
6.6.2 Hardware Safety
In addition to the electronic fuse device mentioned above, the System-Manager has also been protected by regular fuses
which have been rated far beyond nominal currents to prevent false blowing of the fuses during surges. The System-
Manager’s nominal current must not be mistaken from the safety fuses values. The Performance (chapter 2.1, page 5)
must be taken from the SOAR diagram.
The safety fuses are wired in parallel. In order to prevent fuses from blowing in the case of high currents over a short
period of time, a high value has been selected. Before the fuses blow, the electronic safety fuse should prevent any
excessive current flow.
The safety fuses are only for the System-Manager’s protection from being connected in reverse polarity to the battery.
After reverse connection, both fuses have to be exchanged. Moreover, the system’s safety is considerably increased by
the fact that even in the rare case of an electronic breakdown of the System-Manager (and thereby its internal electronic
safety fuse) there is no danger at all to the site, as the 2 safety hardware fuses will still be operational.
6.6.3 Flammability
The System-Manager is solely made of non-flammable and self-dissolving material. Even in unpredictable error
situations, there is no risk of fire if there is no flammable material within the ambient surrounding of the System-Manager
mounting site, and if the System-Manager has been installed above a fire-proof flooring material.
6.6.4 Overvoltage Protection
Due to cost and space, it has not been possible to integrate a full high-voltage protection system in a System-Manager of
this size. High-voltage protection must be installed within the framework of the system’s installation and must be adjusted
to local circumstances. However, some measures have been taken to compensate atmospheric static high voltage. In
most applications, this protection is sufficient. Nevertheless, for fully professional installations with expensive emergency
communications or life-saving equipment being powered, you should consider additional protection.
6.6.5 Simple And Double Errors
The System-Manager is protected from simple errors ( e.g. load short circuit, battery reverse polarity connection, module
reverse polarity connection etc.) by appropriate measures, mainly electronic or by fuses.
