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Portable Working
Standard Meter MT 300
Functions
The working standard is providing the following functions:
• Testing of electricity meter installations with 2-wire and 4
wire circuits
• Testing of energy and power registers.
• Power and energy measurement of active. reactive and apparent
energy
• 4 quadrant measurement.
• Frequency-, phase angle-and power factor measurement.
• Harmonic waveform analysis for voltage and current up to the
40thTHD
• Distortion factor measurement.
• Vector diagram display.
• Waveform sampling.
• Rotary field display.
• Deter mination of the operating burden on instrument tranformers
for CT and PT.
•*Ratio test by simultaneous measurement of both primary and
secondary
• currents in CT connected metering systems.
• * Selective power measurement.
• * External thermal-printer for presentation of the measuring
results
customer site.
• * Energy dosage
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Portable Working
Standard Meter MT 320
Functions
The working standard is providing the following functions:
• Testing of electricity meter installations with 2-wire and 4 wire
circuits
• Testing of energy and power registers.
• Power and energy measurement of active. reactive and apparent
energy
• 4 quadrant measurement.
• Frequency-, phase angle-and power factor measurement.
• Harmonic waveform analysis for voltage and current up to the 40thTHD
• Distortion factor measurement.
• Vector diagram display.
• Waveform sampling.
• Rotary field display.
• Determination of the operating burden on instrument tranformers
for
CT and PT.
• Operation without mains power supply
possible
•* Ratio test by simultaneous measurement of both primary and
secondary
• currents in CT connected metering systems.
• * Selective power measurement.
• * External thermal-printer for presentation of the measuring
results
customer site.
• * Energy dosade
* optional function, not serially
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Portable Moving
Test MT 3000
The MT3000 is based on a real modular design concent
to provide the greatest possible flexibility for a
comprehensive testing of metering installations the field
The stable casing made of aluminium frames looks
appealing and does support the functionality of the
system. The 10,4 TFT display is visualizing the high
quality of the system.
The MT3000 system does distinguish oneself by its
excellent menu guided operation via the built in soft
keys and the coloured 10.4 TFT-display
Because of the real modular design concept the
MT3000 ystem comprises of various
interchangeable
modules to configure the system
individually according
to customer requirements. A system upgrade by
combining various modules with new functionality can
be easily done at any time without opening the
calibration seal.
The protection of designs has been registered under
approval No. 20111830.0
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Threephase
Comparator COM 3003
By
continuation of previous developments the new COM 1003
Com 3003 comparator is the new member of the ZERA high precision
measuring instrument series Accoring to the measuring requirement 2
versions are available: Single phase instrument COM 1003 or three
phase
instrument COM 3003 These comparators are common used in
metrological institutes but also official test laboratories, power
utilities and meters manufacttures this kind of high accurate
instruments
to perform their traceability to national or international
standards.
• High
accuracy, independent of measuring mode,
•
Excellent long-tenrm stability
• Use
of DC-capable current transformers
•
Recalibration period by PTB ( German National Metrology Laboratory )
set for 2 years
• RS
232 and IEEE 488 interfaces
• SCPI compatible IEEE 488 interface commands
•
Automatic measuring range selectionset
for 2 years
• Only
one current input for the whole measuring range
• Direct tranceability of measuring accuracy by connection of DC
standard and frequency standard devices.
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Reference-Multimeter RMM 3000
As
a fallow-on to previous developments, the Reference Multimeter
RMM has been introduced as a new member of the ZERA precision
measuring equipment Depending on the requirements, there are
2 models availble:
•
RMM3000 up to 160 ampere
•
RMM3001 up to 160 ampere
The Reference Multimeter RMM can be used for for current, voltage
phase angle aud power measurement. Also energy comparison
measurements of electricity meters via pulse input is possible
The RMM can be usend for single and polyphase applications. The
functionality of RMM is sufficient for meterlogical institutes, test
laboratories of power utilities and
electricity meter manufacturers.
ln combination with the robust
transportation case electricity meter
manufacturers. In combination with the robust transportation case
( option ) the RMM is also suitable on site meter tests.
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Portable Working Standard Meter TPZ308
The working
standard meter TPZ 108/308 is specially
designed for on-site test. The
operator-friendly and light weight unit
combines a high reliability performance
with a low price and good value for
money.
THe working standard meter is especially
suitable for
•
Accuracy test of electricity meters on
site
•
Functional test of pulse emitting
meters/floating contact
•
Verification of meter circuit
connections at the site
due to all relevant instantaneous values
•
Documentation of all results
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Portable Source VCS 320
The VCS 320-1 and VCS 320- 2 are
portable 3 phase AC sources, producing
independent and controllable voltage and Current outputs.
Ther are suitable for
electicity meter testing in combination with the ZERA automatic
reference meters,
tedting transducer,
testing of power meters and similar measurement devices
subsrtandard meter testingn in combination with the ZERA current
booster CBS320 and the comparator COM3000
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Moving Test - MT30 Portable Working Standard
( NEW )
The System Concept
• The
MT 30 is a portable working standard based on state of the art
technology in power and energy measurement. Various
measuring
features combined with a user friendly operation
concept is providing
the greatest possible exibility for a comprehensive
testing of metering
installations in the eld
•
lts excellent measurement stability is re ecting the high quality of
the system.
• The
MT 30 working stsndard is distinguished by its exemplary
combination of functionality and design lt is offering
optimal via
built-in soft-keys and a 6.4 LCD-display.
Features
•
Easy and user friendly operation
•
Current measurement up to 120 A with error compensated Clip-on
CTs
•
Accuracy class 0.2
•
NO additional error for reasurement
•
Unique long-term and temperature stability
•
Driven by powerful rechargeabe battery-pack or grid potential
•
Internal memory to store measurement results and customer data
•
Windows based data management software MTV is for evaluation
of the test results and test report generation
•
A complete and light weight meter test set
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Single position meter testing system MTS 301
• The
design of the MTS 301 is based on modern state of art and
wide experience of ZERA in Meter testing equipment
manufacturing
This is designed for flexible and efficient testing of
energy meters
simple as well complex, sophisticated & multifunctional
in small
quantities, for research & design, quality testing
purposes.
•
This provide great assistance in
meterological testing
unusual, special testing
type testing
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Stationary
Meter Test Equipment |
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MTS 301 |
MTS 320 |
MTS 340 |
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By the use of most
modern power electronics
components the power
source system of ZERA is
characterized by an
extremely compact design. For
special applications like e.g. type
testing of electricity meters in
national metrology institutes or
development lagoratories of
meter manufacturers ZERA can
also offer transformerless ana-
log amplifier source MTS610 for
for the generation of AC - and
DC-output settings over the
hole range.
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U max (Pn): |
3x40V ...320V |
3x40V ...320V |
3x40V ...320V |
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Power Voltage: |
3x30VA |
3x400VA |
3x1000VA |
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l max: |
1mA...120A |
1mA...120A
opt. 320A |
1mA...120A
opt. 320A |
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Power current: |
3x200VA |
3x1000VA |
3x1500VA |
Accuracy of the
test setting amplitude: |
0,05% |
0,05% |
0,05% |
Accuracy of the
test setting amplitude:
amplitude:
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0,01° |
0,05° |
0,05° |
Stability of the
test setting amplitude: |
<50 ppm/h |
<50 ppm/h |
<50 ppm/h |
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Primary
Standard PPCS
• The
new ZERA single phase precision power calibration system PPCS
developed for the traceable caliration of measuring
instrument for
activereactive and apparent power and has a great
importance
national metrology institutes.
•
The new ZERA precision power calibration systion PPCS generates
sinsoidal voltage and current with adiustable phase
shifts of 0°
to
± 180°
in the techequency range up to 60 Hz
• The
stable displaying and highly precise measurement of active-
reactive and apparent power is possible for free
selectable power
factors with a standard measuring unecrtainty of < 10 x
10-6 by
frequencies from 40 Hz to 60 Hz.
Capability characteristics
- Highly precise current voltage and
power calibration
- Simple traceability to national standards
- High measuring stability by using of many vears approved
ZERA
components
- High repetittion accuracy of the measured values
- Smallest measurement deviations of < 10 x 10 -6
( related to the nominal value of the apparent power )
Required calibration periods:
- Transformers every 5 years
- resistances every year
- Multimeters every 90 days
•
The inherent error of device - determined by a re-calibration - can
be
considered as error compensation by the application
software.
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