Specifications; Reference Conditions; Electrical; Frequency Measurements - AEMC 6470-b User Manual

3.1 Reference Conditions

Influencing Parameters
Temperature
Relative Humidity
Power Supply
Frequency Range of Input Signal
Capacitance Parallel to Input Resistance
Electric Field
Magnetic Field
In the following sections, the intrinsic error is defined under the reference condi-
tions and the operating error under the operating conditions in accordance with
IEC 61557 (1.4 and 5).

3.2 Electrical

3.2.1
Measuring Method: Digital with a sampling frequency of 4028Hz, low pass, FFT.
The frequency of the strongest spectral component is displayed.
Measuring Rate: Display updates approx. 3 times per s.
Measurement Range
Resolution
Operating error
Min. input voltage
3.2.2
Overvoltages up to 75Vrms are displayed as ">65V". Permanent overvoltages
between 70 and 75V at terminals H (Z) and E (X) can cause overheating of the
overvoltage protection varistor.
Voltages of more than 75Vrms lead to error message 31 (excessive external
voltage) or 32 (voltage measurement overrange).
If terminals H (Z) and E (X) are put into contact with the line voltage, the protection
fuse will blow.
Ground Resistance Tester Model 6470-B
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SPECIFICATIONS

Frequency Measurements

Voltage Measurements

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CHAPTER 3
Reference Values
68°F ± 5.5°F (20°C ± 3°C)
45 to 55% RH
9 to 11.2V
0 to 440Hz
0 uF
<1 V/m
< 40 A/m
5 to 450Hz
1Hz
± 2Hz
10mV
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