•
Make sure any test fi xture connected to the system protects the
operator from contact with hazardous voltages, hot surfaces,
and sharp objects. Use shields, barriers, insulation, and safety
interlocks to accomplish this.
•
Cover the device under test (DUT) to protect the operator from
fl ying debris in the event of a system or DUT failure.
•
Double-insulate all electrical connections that an operator can
touch. Double insulation ensures the operator is still protected
even if one insulation layer fails. Refer to IEC 61010-1 for
specifi c requirements.
•
Make sure all connections are behind a locked cabinet door
or other barrier. This protects the system operator from
accidentally removing a connection by hand and exposing
hazardous voltages. Use high-reliability, fail-safe interlock
switches to disconnect power sources when a test fi xture cover
is opened.
•
Where possible, use automatic handlers so operators
are not required to access the DUT or other potentially
hazardous areas.
•
Provide training to all users of the system so they understand
all potential hazards and know how to protect themselves
from injury.
•
During power up in many systems, the outputs may be in an
unknown state until they are properly initialized. Make sure the
design can tolerate this situation without causing operator injury
or hardware damage.
Connect the instrument
Important test system safety information
This product is sold as a stand-alone instrument that may
become part of a system that could contain hazardous voltages and
energy sources. It is the responsibility of the test system designer,
integrator, installer, maintenance personnel, and service personnel to
make sure the system is safe during use and is operating properly.
You must also realize that in many test systems, a single fault such as
a software error may output hazardous signal levels, even when the
system indicates that there is no hazard present.
It is important that you consider the following factors in your system
design and use:
•
The international safety standard IEC 61010-1 defi nes
voltages as hazardous if they exceed 30
VRMS
and 42.4 V
PEAK
or 60 V DC for equipment rated for dry locations. Keithley
Instruments products are only rated for dry locations.
•
Read and comply with the specifi cations of all instruments in the
system. The overall allowed signal levels may be constrained by
the lowest rated instrument in the system. For example, if you
are using a 500 V power supply with a 300 V DC rated switch,
the maximum allowed voltage in the system is 300 V DC.
