Atec Zimmer-LMG450 - Manual (Page 7)

3 Phase/
4 Wire
3 Phase/
3 Wire
Line to Line
Voltage
Line to
Neutral/Earth
66/115V 115V 66V
120V 120V 69V
120/208V 208V 120V
240V 240V 139V
230/400V 400V 230V
277/480V 480V 277V
500V 500V 289V
400/690V 690V 400V
1000V 1000V 578V
Voltage measuring ranges
Nominal value /V
6 12.5 25 60 130 250 400 600
Maximum trms value /V 7.2 14.4 30 60 130 270 560 720
Maximum peak value for full scale /V 12.5 25 50 100 200 400 800 1600
Overload capability 1500V for 1s
Input impedance 1MΩ, 20pF
Current measuring ranges
Nominal value /A
0.6 1.2 2.5 5 10 16
Maximum trms value /A 1.3 2.6 5.2 10 18 18
Maximum peak value for full scale /A 1.875 3.75 7.5 15 30 60
Overload capability 18A permanent, 50A for 1s, 150A for 20ms
Input impedance 2mΩ
Isolation All direct current and voltage inputs of power measuring channels against each other and against earth isolated, max. 600V/CATIII
Voltage measuring ranges for external
isolated current transduceers
Nominal value /V
0.12 0.25 0.5 1 2 4
Maximum trms value /V 0.15 0.3 0.6 1.2 2.5 5
Maximum peak value for full scale /V 0.25 0.5 1 2 4 8
Overload capability 250V for 1s
Input impedance 100kΩ, 10pF
Measuring range selection Automatic, manual or remotely controlled
Measuring accuracy
Accuracies based on:
1. sinusoidal voltage and current 4. definition of power range as the product of
2. ambient temperature 23 °C current and voltage range, 0 ≤ IλI ≤ 1, (λ=Power factor=P/S)
3. warm up time 1h 5. calibration interval 12 month
Other values
All other values are derived from the current, voltage and active power values. Accuracies for derived values depend on the
functional relationship (e.g. S = I * U, DS/S = DI/I + DU/U)
Synchronization The measurement is synchronized on the signals period. There is a choice to determine the period from u(t), i(t), p(t), further
u 2 (t), i 2 (t) by using a settable filter . By this very stable readings are achieved, even at signals of pulse width modulated
frequency inverter and amplitude modulated electronic ballast, synchronization also with external signal or „Line“
Scope function Graphical representation of sampled values over the time
Plot function Time diagram of max. four readings, minimal resolution 50ms
Harmonic analysis prCE Harm Measuring of current and voltage according to EN61000-4-7 with evaluation according to EN61000-3-2 (Pre-compliance)
Harmonic analysis Harm100 Analysis of current, voltage and power up to 99 th harmonics (max. 10kHz), in total 100 harmonics, when including DC part.
Fundamental in the range from 1Hz to 1.2kHz. By selectable integer divider (1...50) a new reference fundamental can be created
as to detect interharmonics.
Flicker measuring Flicker Meter according to EN61000-4-15 with evaluation according to EN61000-3-3
Transients – monitoring and storing Storing and graphical displaying of transients with a resolution of 20µs. Storing depth is 1.4 Millions sample values/channel,
selectable recording duration from 0.05 to 60 seconds. Adjustable pre-trigger, different possibilities of triggering
Computer interfaces Interfaces: RS232 and IEEE488.2, only one interface can be used at the same time
Remote control All functions can be remote controlled, keyboard lock for measuring parameters available
Output data Output of all readable data, data formats equal for all interface types, SCPI command set
Transfer rate RS232: max.115200 Baud, IEEE488.2: max. 1MByte/sec
Printer interface Parallel PC-Printer interface with 25-pin SUB-D socket for printing measuring values, tables, graphics to matrix, inkjet or laser printers
Processing signal interface 25 pin SUB-D socket with (The option processing signal interface can be built in twice):
• four analog inputs for registration of process magnitudes (16Bit, ±10V, 1kHz)
• four analog outputs for output of readings or measured magnitudes (16Bit, ±10V, 100kHz)
• four digital inputs for registration of states (1kHz, U LOW <1V, U HIGH =4...60V/2.5mA)
• four digital outputs to signal states and alarms (open collector, output high max. 30V@100µA, output low max. 1.5V@100mA)
• one input for registration of frequency (0.1Hz...500kHz) and rotation direction of motors (U LOW <1V, U HIGH =4...10V, 1MΩ)
In- and outputs are isolated groupwise against each other and against the other electronics (testing voltage 500V)
Technical Data
Dimensioning of insulation
for all standard low voltages
The measurement inputs are
dimensioned for 600V/CAT III,
with option L45-O15 up to
1000V. This makes it possible to
measure in all standard 3-phase
low voltage networks.
The adjacent table shows that
the voltage “Line to Neutral/
Earth” is always less than 600V.
Measuring accuracy
± (% of measuring value + % of measuring range)
DC 1Hz..1kHz 45...65Hz, AC-Coupling 1kHz..5kHz 5kHz...20kHz
Voltage 0.2+0.2 0.1+0.1 0.05+0.05 0.2+0.2 0.3+0.4
Current (direct) 0.4+0.4 0.15+0.1 0.05+0.05 0.2+0.2 0.5+0.5
Active power (direct) 0.5+0.5 0.2+0.1 0.07+0.08 0.3+0.2 0.6+0.5
Current (via ext. current transducer) 0.2+0.2 0.1+0.1 0.05+0.05 0.2+0.2 0.3+0.4
Active power (via ext. current transducer) 0.3+0.3 0.15+0.1 0.07+0.08 0.3+0.2 0.6+0.5