The Reference Standard is the single- and three-phase
version of precision meter for electrical power and energy measurement.
The Reference Standard is designed to meet all requirements put
on a reference standard in a single- and three-phase electricity
meter testing and calibration systems. The Reference Standard can
be set to any real or artificial mode of operation in three phase
system and is capable to evaluate the individual quantities per
phase and the three-phase cumulative quantities as well.
Reference Standard is based on precision 24-bit A/D conversion
and digital signal processing technology enabling accurate evaluation
of all main and informative quantities. Beyond measurement of all
kinds of power, voltage, current and phase, the meter measures the
harmonic content and distortion of the input signals.
The meter constant of Reference Standard generating value-proportional
impulses on the frequency output is free programmable. This unique
feature along with the extremely high maximum output frequency exceeding
2 MHz allows precision error evaluation of tested meters even at
shortest integration period. The impulse output can be assigned
to various quantities. Additionally, the impulse output can be set
to generate any precise constant frequency for testing purposes.
The Reference Standard is equipped with three fully
independent differential voltage input circuits. Therefore the meter
can be configured to evaluate signals on three independent channels.
This feature in combination with possibility to assign the impulse
output to any combination of the input channels enables to use the
device for example in single-phase system with one channel as reference
while the free channels can monitor additional information like
power consumption of the current and voltage circuits or contact
error in the test circuit.
Available
Models
|
Fundamental Frequency Range |
40 .. 70 Hz
|
Voltage Range |
0.5
.. 500 V
|
Current Range |
1
mA .. 120 A, optionally up to 240 (3000) A |
Power Factor Range |
0
.. 1 (four-quadrant measurement) |
Interfaces |
RS
232 (IEEE 488 optional)
with SCPI compatible programming protocol
|
Meter Testing |
up
to 3 error calculators for simultaneous
testing of inductive meters / electronic meters /
reference standards evaluated directly by RS
|
|
Measurement Modes |
• Active power and energy
in 6-wire mode (3 independent channels)
• Active power and energy in 4-wire mode
• Active power and energy in 3-wire mode
• Reactive power and energy in 4-wire natural mode
• Reactive power and energy in 4-wire artificial (cross-connected)
mode
• Reactive power and energy in 3-wire artificial (cross-connected)
mode
|
|
Maximum Error |
RS xx10A |
RS xx10E |
RS xx10S |
Voltage |
0.03 % |
0.01 % |
0.005 % |
Current |
0.03 % |
0.01 % |
0.005 % |
Apparent Powerq |
0.05 % |
0.02 % |
0.01 % |
Active Power * |
0.05 % |
0.02 % |
0.01 % |
Reactive Power * |
0.05 % |
0.02 % |
0.01 % |
Frequency |
0.005 Hz |
0.005 Hz |
0.005 Hz |
Distortion |
0.05 % |
0.05 % |
0.05 % |
|
|
|
|
* related to the Apparent Power |
Impulse Output |
Number of outputs |
one (three independent
optional) |
Impulses assigned to |
Active / Reactive / Apparent
Energy, Square U or I, constant frequency (any combination of
input channels) |
Meter constant of impulses |
any real number set by
user |
Maximum impulse frequency |
> 2 MHz |