Measurement of voltage and
current in high voltage systems!
With the new measurement technology from Gantner
Instruments, the Q.raxx slimline A127 4CV. But
what is hidden behind the new DAQ system?
The measurement of currents and voltages becomes
particularly interesting as soon as requirements
such as accuracy, synchronicity or high voltage
are added. With the new Q.raxx slimline A127 4CV
you get all the necessary components of the
measurement technology compactly in a 1U 19″
housing. 4 channels for voltage measurements in
the HV range up to 1200 V as well as 4 channels
for direct connection of current transformers
with secondary current output, including the
required +/- 15 V voltage supply.
A few key features:
4 high voltage inputs with 4 voltage ranges
(±40 V, ±120 V, ±400 V, ±1200 V)
Direct connection of 4 current transformers
with secondary 4 current output (±200 mA, ±400
mA, ±800 mA, ±2000 mA)
Stable and powerful bipolar power supply
+/-15 V for current transformers already
permanently installed
Each channel has its own Ds analog/digital
converter (24 bit)
All channels Galvanically isolated …1200 V…
Measurement accuracy typically 0.01
Sampling rate up to 100 kHz, bandwidth 20
kHz
Digital filters switchable
Synchronism of the measuring signals less
than 0.1us
Q.raxx slimline A127 4CV
High accuracy and maximum quality
Facts and figures are one thing, but what does
it mean to you. At Gantner Instruments, we place
the highest value on quality and customer value.
That is why we have listened to your
requirements and developed the new Q.raxx
measuring unit for you. Thereby the accuracy
with typ. 0,01% for all analog inputs, sampling
rates of 100 kHz and a synchronicity of less
than 1us result in a product which is ideally
suited for all kinds of voltage and current
measurements.
All channels have galvanic isolation from
channel to channel, to the bus and to the supply
of the measurement technology up to 1200 V. The
complete current path is calibrated, adjusted
and matched to the measurement technology. The
built-in shunt has a very low temperature
response of only 2 ppm/K. And to top it off, two
independent voltage sources are used for each
current transformer supply to guarantee a
low-noise supply. This is the only way to
achieve the best results.
Integration into existing systems
However, precise measurement is only one aspect.
It is also important that it can be integrated
into new or existing DAQ systems. With the
Q.raxx slimline A127 4 CV, three variants are
available:
Q.raxx A127 XL 4CV: Connection to an
existing Gantner DAQ system via the local bus
Q.raxx A127 XE 4CV Connection via EtherCAT
to any EtherCAT fieldbus system
Q.raxx A127 station 4CV: stand-alone
solution for direct connection via Ethernet to
your measuring computer
Power measurement from DC to AC measurement
range:
You want to implement a power measurement from
DC range up to a bandwidth of 20kHz of
sinusoidal signals? With the Q.raxx A127 4CV
this is possible. RMS values of voltage and
current, as well as the calculation of power and
cos Phi are possible directly on the controller.
With GI.bench, these values can then be
visualized or perfectly integrated into your
specific environment through the open API. In
combination with additional measurement modules
from Gantner Instruments, the results of the
power measurement can also be synchronized with
other measured variables such as speed or
torque.
