القياسات الكهربائية

    After the discovery of electricity and its usage in lighting and energy generating, the electrical measurements with all its branches, became one of the important implementation of the metrology in our daily life, in housing, factories, energy plants, the military, health, and civil sectors at all levels. Responding to all these needs, the department covered a calibration service in the service and production sectors in KSA. The electrical measurements department consists of four laboratories: Voltage Laboratory, Impedance Laboratory, Power-Energy Laboratory, and Electromagnetism Laboratory.

   It is one of the electricity measurement laboratories in the national center of measurement, and it is responsible for establishing, maintaining alternating, and direct current (AC and DC) voltage measurement standards with reference to amperes. In addition, transmit it to all national agencies that measures voltage, DC and AC in the industrial and service sectors. The laboratory provides calibration services for all devices (generation and reading of voltage and electric current) using high-precision reference devices, including: voltage cells, alternating voltage transformers, alternating and direct current DC and AC splitter, and the laboratory has the following measurement capabilities :  

Measurement and calibration capabilities:​​

Calibration and Measurement Capability (CMC)، k=2​RangeQuantity measured / Calibrated Instrument
0.04µV/V
10V
DC Standard 10V

​0.10µV/V

1.018V
DC Standard 1.018V
(4-37) μV/V

1 V-1000 V

10Hz-1MHz

Thermal Voltage Convertor
(4-90)µA/A

10mA-100A

10Hz-100kHz

Thermal Current Convertor

(4-12) μV/V

100mV-1000V
DC Volt Calibrator

52μV/V16mV/V

0.6mV-1000V

10Hz-1MHz

AC Volt Calibrator

(43-140) μA/A

0A-2A
DC Current Calibrator

43μA/A-11mA/A

2mA-2A

10Hz-10kHz

AC Current Calibrator

(7.1-120)μΩ/Ω

1Ω-100MΩ
Resistance Calibrator

4μV/V-12 mV/V

100mV-1000V
DC Volt Multimeter

46μV/V-2mV/V

 

100mV-1000V

20Hz-1MHz

AC Volt Multimeter

(41-100)μA/A

100µA-1A
DC Current Multimeter
(0.14-7.2)mA/A

100µA-1A

300Hz-10kHz

AC Current Multimeter
(7.0-100)μΩ/Ω
1Ω-100MΩ
Resistance Multimeter


 The laboratory is concerned with creating and preserving the electrical impedance measurement standard, which is one of the electrical quantities that describe the amount of electrical energy consumption according to the type of electrical load. It varies according to the type of electrical load (constant and alternating resistance - capacitors - coils). There are a number of ways to measure energy using various measuring systems that can be calibrated in the power and energy laboratory and assigned to international units. The laboratory provides calibration services for power and energy meters, Such as "active and passive power" devices and "voltage and current transformers", and the laboratory has the following measurement capabilities:

Measurement and calibration capabilities:

Calibration and Measurement Capability (CMC)، k=2​RangeQuantity measured / Calibrated Instrument
40µW/(V•A)
0 W – 2400 W

Active Power

Single Phase (f<=400 Hz)

Power Meter،

Power Converter

 

40 µVAR/(V•A)
0 VAR – 2400 VAR

Reactive Power

Single Phase (f<=400 Hz)

Power Meter

40 µVA/(V•A)
0 VA – 2400 VA

Apparent Power

Single Phase (f ≤ 400 Hz(

 

Power Meter

0.10 mW/(V•A)
0 W – 60000 W

Active Power

Three Phase

Power Meter

0.10 mVAR/(V•A)
0 VAR – 60000 VAR

Reactive Power

Three Phase

Power Meter

100·10-6
0 – 0.02

AC High Current

( Ratio Erorr)

 

Current Transformer

0.1 mrad
0 – 20 mrad

AC High Current

( Phase displacement)

 

Current Transformer

150·10-60.002

AC High Voltage

( Ratio Erorr)

 

Voltage Transformer

0.15 mrad
0 – 20 mrad

AC High Voltage

( Phase displacement)

 

Voltage Transformer

1.0 mΩ/Ω
0.01 Ω ≤ R ≤ 10 kΩ

High Voltage Impedance: Burden: Reel Component

 

Standard Burden for Instrument Transformer

1.0 mrad
0 rad ≤ δ ≤ 1.57 rad

High Voltage Impedance: Burden: Imaginer Component (Phase Displacement)

 

Standard Burden for Instrument Transformer

0.20 mA/A

10 mA ≤ I ≤ 10 A

Harmonics Number: 1 ≤ n ≤ 50

Mains Frequency: 45 Hz ≤ f ≤ 65 Hz

Current and Voltage Waveform: Mains Frequency Current Harmonics

Mains Frequency Harmonic Analyser، Harmonic Current Source

0.20 mV/V

1 V ≤ V ≤  300 V

Harmonics Number: 1 ≤ n ≤ 50

Mains Frequency: 45 Hz ≤ f: ≤ 65 Hz

Current and Voltage Waveform: Mains Frequency Harmonic Distortion

Mains Frequency Harmonic Analyser، Signal Generator، Distortion Meter،

0.50%

0.5 ≤ Pst ≤ 10

Modulation Frequency:

8.3 mHz ≤ f ≤ 40 Hz

 

Mains Frequency: 45 Hz ≤ f ≤ 65 Hz

Current and Voltage Waveform: Mains Frequency Voltage Fluctuations; Square Wave Modulation

Flicker Meter


The laboratory is concerned with creating and preserving an electrical impedance measurement standard, which is one of the electrical quantities that describe the amount of impedance in electrical conductors and varies according to the type of electrical load (continuous and alternating resistance - capacitors - coils). ). There are a number of methods for measuring impedance using various measuring systems, which can be calibrated by the impedance laboratory and assigned to international units. The laboratory provides calibration services for high-precision impedance measuring devices such as "standard resistors", "standard capacitors" and "standard coils" and the laboratory has the following measurement capabilities:

Measurement and calibration capabilities:

Calibration and Measurement Capability (CMC)، k=2​RangeQuantity measured / Calibrated Instrument
1-50 ppm
100pF-1pF
Fused-Silica Standard Capacitor
10-200 ppm
1 uF-1pF
Standard Capacitor
0،13 ppm
100 Ω
Standard Resistor
20 ppm
1 mΩ- 100 mΩ
Standard Resistor
0.4 ppm
1 Ω- 10 kΩ
Standard Resistor
0.7-10 ppm
100 kΩ- 100 MΩ
Standard Resistor
12-700 ppm
1 GΩ- 100 TΩ
Standard Resistor
80-200 ppm​
100 uH-10H
Standard Inductor



​The laboratory is concerned with measuring the strength of electromagnetic waves emanating from electronic devices, home appliances and other devices that emit electromagnetic waves, and it checks the tools for measuring them. There are a number of methods of measuring the electromagnetic field using various measuring systems that can be calibrated with the electromagnetism laboratory and assigning them to international units. The laboratory provides calibration services for high-precision measurement devices related to electromagnetic measurements such as "magnetic field sensors" and "electric field sensors", and the laboratory has the following measurement capabilities:

Measurement and calibration capabilities:

Calibration and ​Measurement Capability (CMC)، k=2Range​Quantity measured / Calibrated Instrument
1.4dB - 2.6dB
30 Hz-18 GHz
Electric Field Probes
1.1dB - 2.6dB
DC-1 GHz
Magnetic Field Probes
1.4dB - 2.6dB
1 V/m to 200 V/m
Electric Field Probes
1.1dB - 2.5dB​
0.01 A/m to 80 A/m
Magnetic Field Probes
 ​


Last modified 09 Nov 2020
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