Gossen Metrawatt GmbH
3
Safety Instructions
Attention!
!
These operating instructions include all necessary safety
precautions for personal safety, as well as for preventing
damage to the power supply and any devices connected
to it.
The following general safety precautions must always be adhered
to during operation, maintenance and repair of the device. Non-
compliance with these safety precautions, or with other explicit
warnings included in these operating instructions, is deemed a
violation of design-specific safety standards and use for intended
purpose. The manufacturer assumes no liability in the event of
noncompliance with these safety precautions.
Safety Precautions
1
The device may only be operated in accordance with the pro-
cedures included in these operation instructions.
2
High-voltage conducting components are located inside the
device, which may not be contacted directly.
3
Read the operating instructions carefully before placing the
instrument into service, in order to assure your own safety.
4
The device must be grounded.
The device is equipped with a protective earth terminal. The
device chassis and the housing must be grounded in order to
eliminate the danger of electrical shock. The device may only
be connected to mains power by means of a 3 conductor
cable, and the protective conductor must be securely con-
nected to the protective conductor terminal of the mains out-
let.
5
Keep away from voltage conducting electrical circuits!
Operating personnel may not remove any of the device's cov-
ers. Only trained personnel are permitted to replace compo-
nents and change internal settings. Components may not be
touched as long as the power cable is connected.
Dangerous voltage may be present even after the power cable
has been disconnected from the mains. The device must be
disconnected from the mains, electrical circuits must be dis-
charged and external voltage sources must be disconnected
before touching any components, in order to prevent personal
injury.
The device may not be modified, and only original replace-
ment parts may be used.
In order to assure uninterrupted functionability of the device's
safety features, it may only be maintained and/or repaired by
qualified service providers.
Connecting the Power Cable
1
Examine the voltage selector switch on the back of the device
in order to assure that the selected voltage coincides with
available mains power. If this is not the case, observe the note
printed on the device's mains inlet plug, and make sure that
the correct fuse is utilized.
2
The on/off switch in the device's front panel must be switched
off before the power supply is connected to the mains.
3
Connect the 3 conductor cable with plug to the mains outlet.
The device must be connected to the protective earth con-
ductor.
4
Press the switch on the front panel in order to turn the device
on. The device is now ready for operation.
Fuse
The fuse is located in proximity to the mains power inlet plug on
the back of the device.
Observe the following points if input voltage is changed and/or
the fuse is replaced:
1
The on/off switch must be turned off and the power supply
must be disconnected from all other devices before changing
input voltage and/or replacing the fuse.
2
Press the fuse holder with a screwdriver and the fuse pops
out.
3
Pull the fuse out and replace it with a new fuse which com-
plies with the specifications on the label next to the mains
power inlet plug.
Attention!
!
Use approved fuse types only in order to prevent dam-
age to the device.
4
If input voltage needs to be changed, replace the fuse as
described above and then set the voltage selector switch to
the desired position (230 V AC or 115 V AC). The selected
input voltage appears at the selector switch.
Power Supply Output Terminals
1
For reasons of safety, make sure that there are no short-cir-
cuits between the positive and negative terminals. The device
is equipped with short-circuit protection, but a short-circuit
may result in injury to the user.
2
The output cable must be insulated all the way up to the con-
nected power consumer.
Attention!
!
It is imperative that the hazard notes be strictly observed!
3
The electronic load is equipped with heavy current screw terminals
of protection type IP00 for connection to power sources.
4
The electronic load may be connected with DC current sources up to
a voltage of :
SPL 250-30 as well as SPL 400-40: max. 84 V DC
SPL 200-20 as well as SPL 350-30: max. 210 V DC
If the load is connected with a voltage greater than the standardized
safety-low voltage, the user must take care to ensure that a suffi-
ciently safe cover against accidental contact is provided.
