A2000

3-348-980-03
Multifunctional Power Meter 8/3.02

• Measurement of current, voltage, active, reactive and apparent

power, power factor, active and reactive energy, harmonic
distortion and harmonics
• Precision measured values with error limits of greater than
0.25% for U and I
• Depending upon model, capable of communications with Profibus-
DP, LONWORKS interface or RS 485 interface with Modbus RTU
and other protocols
• Front panel dimensions: 144 x 144 mm
• Minimal installation depth of less than 60 mm
• Good legibility thanks to the high contrast, 14 mm LED display
• Continuous recording of selected measured values
for load profile and statistical purposes (optional)
• Interference recording function with high speed recording QUALITY MANAGEMENT SYSTEM
of events and pre-event history (optional)
• Electrically isolated current inputs
• Two limit value contacts which can be assigned as desired to
measured values
DQS Certified per
DIN EN ISO 9001 Reg.-No.1262

Applications Applicable Regulations and Standards

The measuring instrument is used for the analysis of alternating IEC/EN 61010-1 / Safety requirements for electrical equipment
current systems, in particular where conventional analog VDE 0411 Part 1 for measurement, control and laboratory use
measuring instruments included in distribution systems no longer DIN 43864 Current interface for pulse transmission between
fulfill continuously growing demands. This is especially applicable impulse meters and tariff devices (for pulse output)
where harmonic distortion and harmonics are crucial in addition IEC/EN 61326-1 Electrical equipment for measurement, control and labo-
to current, voltage and power. ratory use, EMC requirements, interference emission
As a further range of applications, the meter is also capable of IEC/EN 61326 / A1 Electrical equipment for measurement, control and labo-
eliminating combined use of measuring instruments which are ratory use, EMC requirements, interference immunity
operated simultaneously along with conventional recorders and IEC/EN 60529/VDE 0470 Protection provided by enclosures (IP code)
fault indicators. In combination with current and voltage trans- Part 1
formers, the instrument performs the most important measure-
ments required in low and medium-voltage systems.
Analog outputs, limit values and interfaces are available for the
monitoring and processing of measured values. A time curve is Function and Operational Principle
simultaneously recorded for up to 12 measured values if the
instrument version with integrated memory is utilized. Important The measuring instrument acquires instantaneous values for star-
measured values can be monitored continuously over a long connected voltages and currents at three-phase electrical sys-
period of time, or recording can be triggered for a specified dura- tems. If no neutral is available, the instrument automatically creates
tion by an event. In the case of event controlled recording, it is a virtual neutral point. The speed at which measured values are
also possible to record the pre-history which lead up to the event logged depends upon the respective line frequency. Each mea-
at the same speed. This provides the user with a comprehensive sured value is updated 32 times per period, which allows for the
overview of the pre-history which has resulted in an error. The acquirement of measuring signals of up to the 15th harmonic.
instrument thus fulfills the function of a fault recorder significantly After these values have been stored to memory, analysis and cal-
better than conventional paper chart recorders. culation of data such as delta and star-connected currents and
voltages begin, as well as the determination of parameters for
power, power factor, energy, harmonic distortion and harmonics.
The values are calculated in accordance with DIN 40110 Part 1
and 2.
All calculated values are available to the display, the serial inter-
face, the analog outputs and the limit value monitoring system.

GOSSEN-METRAWATT GMBH
A2000
Multifunctional Power Meter
Data Storage Representation of Values for Power and Power Factor According to the
Up to 12 measured values can be selected for storage to mem- Selected Parameters Configuration
ory. The measuring instrument acquires these measured values
once every 300 ms and stores them first to intermediate memory. DIN = calculation of reactive power per DIN 40110
These values are then averaged in accordance with the selected without + or – sign
sampling rate and are stored to permanent memory as mean val-
ues. The sampling rate is adjustable from 300 ms to max. 30 min-
utes. Recording is triggered by means of internally selected limit Q= S2 – P2
values. The duration of the recording can be set within a range of 0
1 minute to 4 days. Several events can thus be stored to memory, PF = cap PF = ind
one after the other. The trigger level which starts the recording P=– P=+
Q=+ Q=+
can be set to either 0%, 25%, 50% or 75% for the duration of any
given recording. This provides the user with an overview of the EP– 2. Q 1. Q EP+
pre-history of the event which triggered recording, including time EQ– EQ+
1 1
and date. EP– EP+
3. Q 4. Q
Continuous recording is also possible. EQ– EQ+

The memory has a capacity for up to 63,000 values. The maxi- P=– P=+
mum possible duration of a recording depends upon the number Q=+ Q=+
PF = ind PF = cap
of recorded measured values (1 to 12), and the sampling rate at
which they are to be recorded (0.3 s to 30 min). 0

Sign= calculation of reactive power with + or – sign

TN
Display User Interface
ò u ( t ) × i æè t – -----4-öø dt
1 TN
Safety Q = ------
TN
×
Impedance
Lock 0

RS-232 0
L1 Parameters
Vol-
tage
Memory RS-485 PF = ind PF = ind
CPU
Inputs L2 16 Bit
P=– P=+
L3 ADC LON Q=+ Q=+
Mux ±12 Bit (alternative to RS-485
N and Profibus-DP) EP– EP+
2. Q 1. Q
Cur- I1 Profibus-DP EQ+ EQ+
(alternative to RS-485 1 1
rent I2 EP– EP+
Inputs and LON) 3. Q 4. Q
I3 EQ– EQ–

Synchronizing P=– P=+

(Option)
Input Q=– Q=–
PF = cap PF = cap
230 V / Power Pulse
(Option)
115 V Outputs
0
supply
or
20 ... 69 V / 20 ... 72 V
or
} + Analog Comp= compensating reactive power
73 ... 264 V / 73 ... 276 V (Option) Outputs (reactive power is only produced if current
+
U
+ (not with and voltage have different + or – signs)
I
+ Profibus-DP
^ and partly not TN
with LON)
ò u ( t ) × i ( t ) dt
2
Q = – ------ ×
TN
0
for u(t) · i(t) < 0

0
Limit PF = 1.0 PF = ind
Values P=– P=+
Q=0 Q=+

EP– 2. Q 1. Q EP+
EQ+ EQ+
1 1
EP– EP+
3. Q 4. Q
EQ– EQ–

P=– P=+
Q=0 Q=–
Figure 1 Schematic Diagram PF = 1.0 PF = cap

Figure 2 Values for Power and Power Factor

2 GOSSEN-METRAWATT GMBH
 A2000
Multifunctional Power Meter

Energy Display of up to 12 mega-baud are possible. The standard Profibus 9-pin

plug is used to connect these measuring instruments to the
The instrument is equipped with eight energy meters for the Profibus DP.
display of energy values. The following energy values appear at
these displays upon shipment from the factory:
– Active energy for phases 1, 2 and 3,
Programming
as well as for the overall system
– Reactive energy for phases 1, 2 and 3, The instrument can be programmed either with the keys at the
as well as for the overall system front panel or via serial interface. All selected values remain in
memory, even if mains failure should occur.
The meters can be reconfigured to display the following energy
values during instrument configuration: All programmed parameters, except for the limit values, can be
protected against inadvertent change with a switch (LOCK) at the
Active energy, high tariff, import for the overall system instrument’s rear panel.
Active energy, low tariff, import for the overall system
Active energy, high tariff, export for the overall system This assures that the instrument configuration is not changed dur-
Active energy, low tariff, export for the overall system ing limit value selection.
Reactive energy, high tariff, import for the overall system Alternatively, the LOCK switch can be programmed to protect all
Reactive energy, low tariff, import for the overall system parameters, including the limit values, against unauthorized modi-
Reactive energy, high tariff, export for the overall system fication.
Reactive energy, low tariff, export for the overall system
Switching from high to low tariff can be accomplished either by The following values can be set during programming:
means of the synchronization input, an external contact or the
data logger’s internal clock (only possible if the instrument version Type of Electrical System
with data logger is utilized). 4-wire unbalanced load or
3-wire unbalanced load or
3-wire balanced load
Serial Interface
The energy meters can be configured to display active and
As standard equipment, the measuring instrument is provided reactive energy for phases L1, L2 and L3, as well as for the overall
with an RS 232 and an RS 485 interface. Both interfaces use the system, or active and reactive energy for the overall system sub-
same protocol, which can be selected as desired. divided into energy import and export, and high and low tariff.
The GMC device bus per DIN draft 19244, protocol per EN
60870 and Modbus RTU are available. A baud rate or 1200, Inputs
2400, 4800, 9600 or 19,200 can be selected. The address can
Secondary Transformer Current 5 A or 1 A
be set within a range of 0 to 254, and parity can be set to even,
odd, none or space. Primary Transformer Current 1A
5 A to 5000 A in 5 A steps
Several measured values are always transmitted with one data
to 50000 A in 50 A steps
word, allowing for especially fast transmission.
to 150000 A in 500 A steps
In the versions with LONWORKS interface the serial interface
Secondary Transformer Voltage From 100 V to 500 V
RS 485 has been dimensioned for the LONWORKS interface. No
in 1 V steps
additional settings are required for LON.
Primary Transformer Voltage From 100 V to 100 kV
In the versions with Profibus DP the serial interface RS 485 has
in 100 V steps
been dimensioned for the Profibus DP. The selected address is
to 750 kV in 1 kV steps
valid for the RS 232, as well as for the Profibus DP. Addresses
greater than or equal to 126 are interpreted as Profibus address Time Period for
126, and can thus be used to allow for the assignment of an Mean Power Values External via synchronizing input
address to the instrument via the Profibus. or internally adjustable from 1 to
60 minutes
The selected baud rate only applies to the RS 232 interface for
these instrument versions. The master determines transmission Synchronizing Input External, or operation with inter-
speed for the Profibus. The A2000 can be operated at the nal mean value generation,
Profibus DP at transmission speeds of up to 12 mega-baud. adjustable from 1 to 60 minutes
Synchronizing Input Function Synchronization of mean values,
LONWORKS Interface tariff switching or external
control of the limit values relays
The power meters can be alternatively equipped with a LON inter-
face. In this case, the LONWORKS interface replaces the RS 485.
The RS 232 interface is still used for configuring parameters and
for reading out the contents of the data memory. The optional
data logger can be used with these instrument versions as well, in
which case the read-out of recorded data is accomplished via the
RS 232 interface.

Profibus DP
In the Profibus DP version the serial interface is used only for the
Profibus. All measurement data, except for values stored to the
data logger, can be read out via the bus link. Transmission speeds

GOSSEN-METRAWATT GMBH 3
A2000
Multifunctional Power Meter
Outputs Voltage secondary phase conductor
Limit Value Monitoring – Monitored measured voltage at the transformer 500 V
values (sources) primary phase conductor
– Min-max characteristics voltage same as secondary
– Hysteresis (= ratio 1:1)
– Alarm message storage, on/off Synchronizing Pulse internal, mean value over 15 min.
– Limit value
2 or 4 Analog Outputs – Measured values which Outputs
influence the analog outputs Limit Value 1 Measured value: IL1
– Output range 4 ... 20 mA, set to: 5A
0 ... 20 mA, ± 20 mA, No hysteresis
0 ... 10 V, 2 ... 10 V or ± 10 V Relay closes when exceeded
– Analog range with lower and No storage of alarm messages
upper rang values (indepen- Limit Value 2 Measured value: U L1
dent of measuring range) set to: 240 V
Pulse Outputs – Export, Import No hysteresis
for Active or Reactive Energy – Overall energy or energy Relay closes when exceeded
from the individual phase No storage of alarm messages
conductors Analog Output 1 Meas. value: Overall active
– Active or reactive energy power
– Pulse rate: Range: Import
1 ... 1000 pulses per kWh 0 ... 2000 W
in steps of 1 Output Value: 4 ... 20 mA
1000 ... 5000 pulses per kWh
Analog Output 2 Meas. value: Overall
in steps of 10
reactive power
The same pulse rates can be Range: Import
used for MWh as well. 0 ... 1000 Var
Serial Interfaces Either GMC device bus, Output Value: 4 ... 20 mA
EN 60870 or Modbus RTU Analog Output 3 (optional) Meas. value: I L2
protocol Range 0 ... 5 A
Output Value: 4 ... 20 mA
Attention: RS 232 and RS 485
Analog Output 4 (optional) Meas. value: U L2
use the same protocol.
Range: 0 ... 250 V
Output Value: 4 ... 20 mA
Addresses with values ranging
from 0 to 254 Pulse Output 1 (optional) Meas. value: overall system
Baud rate: 1200, 2400, 4800, Active Energy Import
9600 or 19,200 10 pulses per kWh
Parity: even, odd, none or space Pulse Output 2 (optional) Meas. value: overall system
Active Energy Export
The measuring instrument is configured with the following 10 pulses per kWh
parameters at the factory:
All parameters can be subsequently changed by the user. Serial Interfaces
The encoding switch for securing selected parameters against Address 250
change is set at the factory to allow for parameter changes. Baud Rate 9600
Protocol GMC device bus
Type of Electrical System Parity even
Configuration 4-wire unbalanced
(The energy meters display
active and reactive energy for
phases L1, L2 and L3, as well
as for the overall system.)

Inputs
Current second. transformer current 5 A
primary current same as
secondary (= ratio 1:1)

4 GOSSEN-METRAWATT GMBH
 A2000
Multifunctional Power Meter

Characteristic Values Output Quantity Configurable

current 0 / 4 ... 20 mA /
± 20 mA
Display
voltage 0 / 2 ... 10 V /
Type 7 segment LED ± 10 V
Display Color red Output Load, Current max. 500 W
Character Height 13.2 mm Output Load, Voltage < 20 mA
Display Range max. 9999 Resolution 0.1% of control range, or in
Energy max. 999999999 accordance with resolution for
ranges of less than 1000 digits
Input Error Limits ± 0.5% of nom. value
Voltage Measurement with current
Conductor – Conductor 0 ... 500 ... 550 V, 40 ... 70 Hz ± 1.0% of nom. value
Conductor – N (Earth) 0 ... 290 ... 320 V, 40 ... 70 Hz with voltage
Overload 1.2-fold Load Impedance Effect
Input Impedance > 4 MW for Voltage no effect to > 10 KW
for Current < 0.8 mA / W (0 ... 250 ... 500 W)
Current Measurement 0 ... 1 ... 1.2 A
0 ... 5 ... 6 A Pulse Output
Overload 1.4-fold permanent Contact open emitter
Current ON 10 mA ... 27 mA
30 A / 10 s OFF < 2 mA
100 A / 3 s External Voltage 8 ... 30 V
Internal Consumption < 150 mW Pulse Duration 100 ms
Measurement 32 samples per period and Interpulse Period min. 10 ms
measured values with Error Limits ± 0.5% with nom. values
mean value generation over for current and voltage
16 periods (= max. power)
4 quadrant operation Interfaces RS 232 and RS 485
Measurement Value Display The selected parameters for alternative:
current and voltage transform- RS 232 and LON or
ers are taken into consideration RS 232 and Profibus-DP
for displayed measured Protocols for
values. RS 232 and RS 485 adjustable:
Meas. Error of GMC device bus (DIN Draft
Current and Voltage ± 0.25% of nom. value 19244),
± 1 digit EN 60870 or Modbus (RTU)
Power ± 0.5% of nom. value
± 1 digit Power Supply
Power Factor ± 0.02 for U and I > 10% Supply Voltage 230 V / 115 V ± 10%
of nom. value 45 ... 65 Hz
Frequency ± 0.02 Hz 20 V ... 69 V 45 ... 450 Hz
Energy ± 0.5% with nom. values 20 V ... 72 V or
for current and voltage 73 V ... 264 V 45 ... 450 Hz
Synchronization Pulse The synchronizing input 73 V ... 276 V
recognizes floating contact. Power Consumption max. 15 VA
ON: < 10 W, OFF: > 10 MW

Outputs The instrument is not equipped with an integrated circuit breaker.

Therefore, during installation, care should be taken to ensure that
Relays One changeover contact per – the building where the instrument is installed includes a
limit value circuit breaker,
Switching Capacity / 250 V, 2 A – the circuit breaker is positioned in close proximity to the
500 VA / 50 W (nominal load) instrument and is easily accessible to the operator,
Service Life > 500000 switching cycles – it is clearly marked as a circuit breaking device for the
Hysteresis Adjustable for each relay from instrument.
± 0 to ± 100 digits
Analog Outputs Mechanical Design
Range and Values Measured values can Dimensions 144 x 144 x 67.1 mm
be freely selected for analog Panel Cutout 138 + 1 x 138 + 1 mm
outputs and read-out Installation Depth max. 59.5 mm
Protection front panel IP 54
rear panel IP 20
Protection Class II
See dimensional drawing on page 7.

GOSSEN-METRAWATT GMBH 5
A2000
Multifunctional Power Meter

Terminal Assignments Variants with RS 232 and RS 485 Serial Interface, or with LON and RS 232
13 14 15
Current Inputs
N 115V 230V

Connection with 3 Current Transformers ±10% 45...65 Hz

in 3 or 4-Phase Mains System (4L) Supply voltage 20...69 V
(power supply) 20...72 V
see marking on
L3 k l name plate 73...264 V
73...276 V
L2 k l

L1 k l Relay 1 Relay 2 I1 I2 I3 N L1 L2 L3
Power supply
N k l k l k l max. 15 VA

51 52 53 55 56 57 1 3 4 6 7 9 11 2 5 8 13 14 15

1 3 4 6 7 9 11 2 5 8

RELAY 1 RELAY 2 I1 I2 I3 N L1 L2 L3 Power

supply

Connection with 2 Current Transformers

in 3-Phase Mains System (3L)
L3 k l

L2

L1 k l 46 45 44 43 42 41 38 37 35 33 31 24 23 22 21 20

B A
LON
RxD A1 A2 A3 A4 Sync.- S01 +
TxD C B A Input S02
1 3 4 6 7 9 2 5 8 Analog
RS-232 RS-485 Output Pulse
Output
RELAY 1 RELAY 2 I1 I2 I3 N L1 L2 L3 Power Please observe permissible feature combinations when ordering.
supply

Design with Profibus-DP and RS-232 Serial Interface

13 14 15
Connection with 1 Current Transformer
N 115V 230V
in 4-Phase Mains System (identical load, IN = 0)
(3L-1) L3 ±10% 45...65 Hz
Supply voltage 20...69 V
L2 (power supply) 20...72 V
see marking on
name plate 73...264 V
L1 k l 73...276 V
N
Relay 1 Relay 2 I1 I2 I3 N L1 L2 L3
Power supply
1 3 11 2 k l k l k l max. 15 VA

51 52 53 55 56 57 1 3 4 6 7 9 11 2 5 8 13 14 15
RELAY 1 RELAY 2 I1 I2 I3 N L1 L2 L3 Power
supply

Connection with 1 Current Transformer

in 3-Phase Mains System (identical load)
(3L-1) L3

L2

L1 k l

1 3 2 5 8 46 45 44 24 23 22 21 20

RELAY 1 RELAY 2 I1 I2 I3 N L1 L2 L3 Power RxD Sync.- S01 +

Supply Profibus-DP TxD Input S02
COM 2 RS-232 Pulse
Output

6 GOSSEN-METRAWATT GMBH
 A2000
Multifunctional Power Meter

Dimensional Drawing Accessory Software

METRAwinâ10/A2000
max. 25.4
Software for read-out and processing of measured values as they
144
occur, or values from the data logger in the A2000 multifunctional
power meter, and for configuring parameters at the A200.
This software runs under Windows 95/98/ME, Windows NT and
2000.

• Read-out of measured values

144

from the power meter’s data logger

• Continuous recording of measured values
over a given period of time
• Display of measured values
– as a function of time in line recorder format,
– in tabular form,
– digitally as individual values or
151.1 8 – analog or as bar graphs
59.1
• Freely selectable time intervals
Panel Cutout
138 + 1 x 138 + 1
• Identification of curves for the recognition of individual
measured value sequences
• Simple, clear parameters configuration for the A2000
• Parameters configurations
All Dimensions in mm for frequently recurring setups can be saved to memory
• Measured values can be exported
to other Windows programs
• Mathematical functions
Standard Equipment
Power meters without data memory
Software Description
(without optional data logger):
Measuring instruments without data logger are shipped with Data Acquisition and Display
operating instructions in either German, English or French. METRAwinâ10/A2000 provides for an unambiguous display of
the contents of the data memory from the A2000. Alternatively,
measured values can be continuously queried from the measuring
Power meters with data memory instrument by the software, and stored to a data file.
(with optional data logger):
In addition to the measuring instrument and operating instruc- METRAwinâ10/A2000 summarizes values from the data logger or
tions, in either German, English or French, power meters with online recorded values in tabular form, and documents minimum
data logger also include a floppy disk with METRAwinâ10/A2000 and maximum values with date and time as well.
software and an adapter with a subminiature plug (for connection
to a PC via extension cable). All measured values can be plainly represented as a function of
time with a yt graph. The time scale can be expanded or
contracted to allow for optimal representation. The cursor can be
placed at the corresponding position within the time scale for
precision readings.

Measured values can also be displayed digitally. Up to four mea-

sured values can be displayed at the monitor simultaneously in
digital form.

Instrument Configuration with METRAwinâ10/A2000

METRAwinâ10/A2000 plainly displays all of the functions and
possible settings included in the power meter in various windows.
The desired parameter values are entered to the corresponding
fields and are subsequently uploaded to the power meter.

GOSSEN-METRAWATT GMBH 7
A2000
Multifunctional Power Meter

Order Information
Designation Configuration Options
Article Number / Feature
A2000 Multifunctional Power Meter A2000 A2000 A2000
Serial Interface with RS-232 and RS-485 L0 – –
with LON and RS-232 – L1 –
with Profibus-DP and RS-232 – – L2
Analog Outputs 2 analog outputs A0 A0 –
4 analog outputs A1 1) – –
without analog output – – A2
Data Logger without data logger R0 R0 R0
with data logger R1 1) 2) R1 1) R1 1)
Pulse Output / Synchronizing Input without pulse output and without synchronizing input P0 – P0
2 pulse outputs and 1 synchronizing input P1 P1 P1
Supply Voltage 230 / 115 V H0 H0 H0
20 ¼ 69 V / 20 ¼ 72 V H1 H1 H1
73 ¼ 264 V / 73 ¼ 276 V H2 H2 H2
Manufacturer’s Certificate / without certificate U0 U0 U0
Test Report with certificate and test report U1 U1 U1
Operating Instructions German (standard) W0 W0 W0
English W1 W1 W1
French W2 W2 W2

1)
only in combination with Feature P1
2) only in combination with Feature A1

Accessories
Designation Article Number
METRAwinâ10/A2000 with adapter – software for the transmission of measured values and for instrument configuration Z305A
Interface cable RS-232, approx. 2 m long GTZ3241000R0001

Standard Units
The following measuring instruments can be shipped as standard units. Only the article number needs to be indicated.
Designation Instrument and Features Combination Article Number
A2000 with 230 V / 115 V supply voltage, with 2 analog outputs, with RS-232 and RS-485 interfaces, A2000 H0 A0 P0 R0 L0 U0 W0 A2000-V001
with operating instructions in German
A2000 with 230 V / 115 V supply voltage, with 4 analog outputs, with 2 pulse outputs and A2000 H0 A1 P1 R0 L0 U0 W0 A2000-V002
1 synchronizing input, with RS-232 and RS-485 interfaces, with operating instructions in German
A2000 with 230 V / 115 V supply voltage, with 4 analog outputs, with 2 pulse outputs and A2000 H0 A1 P1 R1 L0 U0 W0 A2000-V003
1 synchronizing input, with data logger, with RS-232 and RS-485 interfaces,
with operating instructions in German
A2000 with 230 V / 115 V supply voltage, with 2 analog outputs, with 2 pulse outputs and A2000 H0 A0 P1 R0 L1 U0 W0 A2000-V004
1 synchronizing input, with LON and RS-232 interfaces, with operating instructions in German
A2000 with 230 V / 115 V supply voltage, with 2 pulse outputs and 1 synchronizing input, A2000 H0 A2 P1 R0 L2 U0 W0 A2000-V005
with Profibus-DP and RS-232, with operating instructions in German

Printed in Germany • Subject to change without notice

GOSSEN-METRAWATT GMBH
Thomas-Mann-Str. 16-20
90471 Nuremberg, Germany
Phone +49 911 8602-0
Fax +49 911 8602-669
e-mail: info@gmc-instruments.com
http://www.gmc-instruments.com