User Manual
Page 7
EA Elektro-Automatik GmbH
Helmholtzstr. 31-37 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
ea1974@elektroautomatik.de
PSB 9000 2.5 kW Series
1.7 Safety
1.7.1 Safety notices
Mortal danger - Hazardous voltage
• Electrical equipment operation means that some parts can be under dangerous voltage.
Therefore all parts under voltage must be covered! This basically applies to all models,
though 60 V models according to SELV can’t generate hazardous DC voltage.
• Never touch cables or connectors directly after unplugging from mains supply as the
danger of electric shock remains!
• Never touch the contacts on DC terminal directly after switching the device o, because
when running in source mode there still can be dangerous voltage present, sinking more
or less slowly depending on the load!
• There can be dangerous potential between DC minus to PE or DC plus to PE due to
charged X capacitors, even when the DC terminal isn’t switched on and the device is
still running. Never touch PE and any of the DC poles at the same time with bare hands!
• Always follow 5 safety rules when working with electric devices:
• Disconnect completely
• Secure against reconnection
• Verify that the system is dead
• Carry out earthing and short-circuiting
• Provide protection from adjacent live parts
• In situations where the device works in source mode, with a voltage > 0 adjusted and
the DC output being on, the output voltage can remain at the last setting after switching
the DC output o again, in case the set value of current for the internal load (sink mode)
is set to 0
• Even with the DC terminal being switched o, the device can generate a small, not load-
able voltage (< 2 V) on the DC terminal!
• The equipment must only be used as intended
• The equipment is only approved for use within the connection limits stated on the product label.
• Do not insert any object, particularly metallic, through the ventilator slots
• Avoid any use of liquids near the equipment. Protect the device from wet, damp and conden-
sation.
• When operating the device as power supply: do not connect loads, particularly such with low
resistance, to the device while the DC output is switched on; sparking may occur which can
cause burns as well as damage to the equipment and to the loads.
• When operating the device as electronic load: do not connect power sources to the device while
the DC input is switched on; sparking may occur which can cause burns as well as damage to
the equipment and to the source.
• ESD regulations must be applied when plugging interface cards or modules into the relative slot
• Interfacecardsormodulesmayonlybeattachedorremovedafterthedeviceisswitchedo.
It isn’t necessary to open the device.
• Do not connect external power sources with reversed polarity to the DC terminal! The equipment
willbedamaged,evenwhencompletelypoweredo.
• Never connect external power sources to the DC terminal that can generate a higher voltage
than the rated voltage of the device!
• Never insert a network cable which is connected to Ethernet or its components into the mas-
ter-slave sockets on the back side of the device!
• Alwayscongurethevariousprotectingfeaturesagainstovercurrent,overpoweretc.forsen-
sitive loads to what the target application requires!
• When operating the device as electronic load: always make sure that the energy recovery can
feed back the inverted energy and that it does not switch to isolated operation. For situations
of isolated operation a supervision device (AIU, grid and plat protection) has to be installed
• It isn’t allowed to run the device on AC sources such as generators or UPS equipment. It must
only be connected to a power grid!