NRCT-100A Portable Electricity Meter Calibrator

1. Product Introduction
NRCT-100A Portable Electricity Meter Calibrator is the latest development of high precision testing instrument in our company which has functions of electric parameter measurement electricity meter calibration and wiring judgment. The instrument is equipped with high precision and high linearity of voltage transformer and current transformer to make high measuring precision of various parameters at the same time it is equipped with clip-on current transformer that makes the field wiring simple it can directly access without interrupting current circuit.

2. Characteristics
(1) Adopted with a large-screen color LCD display graphical user interface with prompt information and multi-parameter display man-machine dialogue friendly interface the displayed vector graphics and wiring judgment provides a reliable basis to check the circuit.
(2) Full touch of conductive silicone keyboard operation mode makes the operation good and easy to learn.
(3) Built-in high-capacity of memory which can save the calibration data on-site and it can store up to 1000 groups of filed calibration results it can be provided to the background computer management software and results will be uploaded to the computer to realize computerization management.
(4) Uses independent designed engineering plastic shell beautiful and practical.
(5) Field test operation is convenient. The instrument can be operated on the desk if you open the bracket at the back of the instrument it also can be hand-held operation. In order to facilitate the hand-held operation the machine can be equipped with a fixed fastening belt. When use hand-held operation you can fix ayour hand on the left of the instrument to ensure the hand-held operation convenient and flexible.

1. Input characteristics

Voltage measuring range	0 ~ 400V. 57.7V 100V 200V 400V four gears of measuring range can be switched automatically.
Current measuring range	0 ~ 5A. The built-in transformer is divided into 5A (CT) gear. Clamp-on transformer is divided into six gears they are 5A (small clamp) 25A (small clamp) 100A (medium clamp) 500A (medium clamp) 400A (big clamp) 2000A (big clamp). (The medium clamp and large clamp are optional).
Phase angle measuring range	0 ~ 359.999°.
Frequency measuring range	45 ~ 55 Hz

2. Accuracy

Voltage	± 0.05% (± 0.01%)
Current	± 0.05% (± 0.01%) (clamp-on transformer: ± 0.5%)
Active power	± 0.05% (± 0.01%) (clamp-on transformer: ± 0.5%)
Reactive power	± 0.3% (± 0.5%) (clamp-on transformer: ± 1.0%)
Active energy	± 0.05% (± 0.01%) (clamp-on transformer: ± 0.5%)
Reactive energy	± 0.3% (± 0.5%) (clamp-on transformer: ± 1.0%)
Frequency	± 0.05% (± 0.01%)
Phase	±0.2°

3. Power quality

The amplitude of fundamental voltage and fundamental current	The permissible error of fundamental voltage	≤ 0.5%F.S
	The permissible error of fundamental current	≤ 1%F.S
The measuring error of the phase difference between fundamental voltage and fundamental current		≤ 0.5°
The measuring error of harmonic voltage ratio		≤ 0.1%
The measuring error of harmonic current ratio		≤ 0.2%
The unbalance error of three-phase voltage		≤ 0.2%

4. Operation temperature: －10℃~ +40℃

5. Insulation
(1) The insulation resistance between chassis and voltage input or current input: ≥ 100MΩ.
(2) The withstand between the input end of working power supply and the casing is 1.5KV (RMS) for 1 minute experiment.

6. Standard energy pulse constant
Standard energy pulse constant: built-in transformer constant (FL) = 10000 r/kW·h
The clamp type transformer constant (FL):