VariTrans P 410000 pages

High-Voltage Isolation Amplifiers / Shunt Isolators

VariTrans P 41000
Universal high-voltage isolator.
Input signals from Vin = ±60 mV up to Vin = ±100 V.
The Task
In high-voltage systems, unipolar or bipolar
voltage signals ranging from 60 mV to 100 V,
e.g. voltages across shunt resistors, must be
galvanically isolated and converted to standard ±20 mA, ±10 V, or 4 ... 20 mA output
signals.
The Problems
In the case of insufficient insulation, high
voltages and harsh ambient conditions may
overload the galvanic isolation. This can
result in false measurement values or even
personal injury or damage to the equipment. These risks have to be eliminated
safely and over the long term by suitably
designed high-voltage isolation amplifiers.
The Solution
The VariTrans P 41000 isolation amplifiers
have been specially conceived for measurements of bipolar voltages from millivolts to
volts. They reliably isolate high potentials at
the input circuit.
The isolating distances are designed to
withstand permanent voltages up to 3600 V
AC/DC and fast transients up to 20 kV.
Protection against electric shock is achieved
through protective separation according to
EN 61140 between input and output and
power supply.
The Housing
A new 22.5 mm wide modular housing is
used for the VariTrans P 41000 high-voltage
isolators. It is snapped onto a standard DIN
rail. The front panels of the adjustable
m
­ odels provide a rotary encoder switch for
selecting the ranges.

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The Advantages
The VariTrans P 41000 are available for any
input voltages from ±60 mV to ±100 V.
Analog unipolar and bipolar (standard)
s
­ ignals are available at the output: ±20 mA,
±10 V and 4 … 20 mA.
16 input/output signal combinations can
easily be selected with a rotary encoder
switch on the front of the device. Tedious
on-site adjustment using a screwdriver, calibrator or multimeter is no longer required.
Drift problems due to unstable trimming
components – e.g. potentiometers – are
avoided. Thanks to the easy scalability of the
range selection, the devices can easily be
customized to individual customer solutions. Up to 16 customized signal combinations can be implemented in one device and
configured optimally for the respective
application.
The integrated 20 to 253 V AC/DC VariPower
broad-range power supply offers maximum
flexibility. This ensures trouble-free operation with alternating or direct voltages
everywhere in the world and provides for
maximum safety even in unstable power
supply networks.
Installation is also easy and safe: Incorrect
connection of the mains supply is practically
impossible. Expensive standstill times and
repair work during commissioning are
avoided.
Vacuum encapsulation provides maximum
protection against aggressive environmental influences, shock and vibrations and
ensures that the high disruptive strength
required for working voltages up to 3600 V
AC/DC is maintained over the long term.
The isolation system meets the safety
requirements of EN 61010-1 and EN 50124-1
(railway applications: insulation