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Operation manual ISOTEST 4 S / 4 S
p l u s
2. Design
All ELMED ISOTEST
®
test equipment is designed for maximum safety.
The units are designed and manufactured according to acknowledged
safety rules and the current state of art.
The high safety standards guarantee that personal is protected from
electric shock hazards. Potential hazards resulting from pulse
voltages in the ISOTEST
®
are clearly below the allowable limits of
IEC 479-1 and IEC 479-2.
The basic construction of all ISOTEST
®
test equipment is very similar with
respect to the components being used:
Enclosures
Rugged polystyrene enclosure with
separate compartment for
rechargeable batteries
Carrying Case
A leather carrying case with
shoulder and carrying belt as well
as transparent pouch with user
guide
Power Supply
Easily replaceable lead-acid
accumulator (maintenance-free)
Lithium battery
Deep discharge protection of
rechargeable battery
Acoustic alarm by piezo buzzer
when the operating voltage falls
below its allowable minimum plus
warning indication by LED and
automatic partial shut-off after 1
minute
Operation
Rotary Switches
Voltage Generation (test voltage)
Processor-controlled switching
power supply with high-voltage
transformer
Adjustable Test Voltage (with limits) Spherical spark gap with stepping-
motor control and continuous zero
calibration or electronic spark gap
Adjustable Test Voltage
Rotary Switches
Indication Of Test Voltage
Values on membrane-switch front
panel
