The Alternating Current (AC) section is responsible for the establishment, maintenance and dissemination of the Syrian national standards of the AC voltage, AC current, AC power, and AC energy quantities.

The national standard of AC voltage and AC current are represented by an AC measurement standard, Fluke 5790A and AC active shunt, Ballantine 1625A.

The national standard of AC power is represented by a standard watt converter, Yokogawa 2885.

The national standard of AC energy is represented by a standard watt converter, Yokogawa 2885, and V-F converter Yokogawa B9882CA.
The national standards of AC section are traceable to the international system of units (SI), through an unbroken chain of calibration abroad at national metrology institutes (NMI’s).
The AC section performs measurements and provides calibration services to industrial sectors and scientific institutes for both public and private sectors.
Calibrations carried out by the AC section cover a wide range of electrical standards and measuring instruments up-to the next table:

Calibration Service

Range

Expanded Uncertainty

AC Voltmeters

100 mV to 1000 V (50 Hz to 100 kHz)

(100 to 250) ppm

1 mV to 50 mV at 1 kHz

(300 to 800) ppm

AC Voltage Calibrators

100 mV to 1000 V (50 Hz to 100 kHz)

(80 to 200) ppm

1 mV to 50 mV at 1 kHz 

(200 to 500) ppm

AC Ammeters

100 μA to 20 A ( 50 Hz to 400 Hz)

(200 to 500) ppm

20 A to 60 A ( 50 Hz to 400 Hz)

(500 to 1000) ppm

AC Current Calibrators

100 μA to 20A ( 50 Hz to 400 Hz)

(150 to 300) ppm

20 A to 100 A ( 50 Hz to 400 Hz)

(300 to 500) ppm

AC Current Transformers

0.5 A to 200 A at 50 Hz

(100 ppm & 0.2 min)

AC Power Meters (Watt)

(3 V to 600 V) x (0.1 A to 30 A) ( 50 Hz to 400 Hz)

(100 to 500) ppm

Electronic Standard Energy Meters (Watt-hour)

(3 V to 600 V) x (0.1 A to 30 A) ( 50Hz-400 Hz)

(200 to 500) ppm

Note (1): 100 mV and 1000 V can be calibrated up to 20 kHz only.
Note (2): The AC section has the capability to calibrate other instruments like clamp meter up-to 1200 A and high voltage instruments up-to 50 kVac at 50 Hz.
Environmental conditions:
Ambient temperature: (23 ± 1) °C, Relative humidity: (40 ± 10) %.

Download Customer Request
Download List of Equipment to be Calibrated
ac.section@nscl.sy