Wuhan Wugao Electric Measurement Co., Ltd

WDYM-3 handheld three-phase electric energy meter field calibrator class 0.1

The instrument has a built-in large-capacity memory that will not lose data when power off. It can save on-site calibration data, and can store up to 1,000 sets of on-site calibration results. It can provide background computer management software, and upload the results to the computer to realize computerized management.

During operation, the rear bracket can be opened and placed on the desktop for use, and it can also be used by hand. For the convenience of hand-held operation, this machine can add a fastening belt for fixing the hand-held operation. When hand-held operation, the hand can be fixed on the left side of the instrument, which ensures the convenience and flexibility of hand-held operation.

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Product Details


1. Input characteristics

Voltage measurement range: 0~400V, 57.7V, 100V, 220V, 400V automatic switching range.

Current measurement range: 0~5A, the built-in transformer is divided into 5A (CT) files. The clamp transformer has six gears: 5A (small clamp), 25A (small clamp), 100A (medium clamp), 500A (medium clamp), 400A (large clamp), and 2000A (large clamp). (The medium clamp meter and the large clamp meter are optional)

Phase angle measurement range: 0~359.999°.

Frequency measurement range: 45~55Hz.

2. Accuracy

Measurement verification part:

Voltage: ±0.05% (±0.1%)

Current: ±0.05% (±0.1%) (clamp transformer ±0.5%)

Active power: ±0.05% (±0.1%) (clamp transformer ±0.5%)

Reactive power: ±0.3% (±0.5%) (clamp transformer ±1.0%)

Active energy: ±0.05% (±0.1%) (clamp transformer ±0.5%)

Reactive energy: ±0.3% (±0.5%) (clamp transformer ±1.0%)

Frequency: ±0.05% (±0.1%)

Phase: ±0.2°

3. Power quality

Fundamental wave voltage and current amplitude: Fundamental wave voltage allowable error≤0.5%F.S.; Fundamental wave current allowable error≤1%F.S.

Measurement error of phase difference between fundamental voltage and current: ≤0.5°

Harmonic voltage content rate measurement error: ≤0.1%

Harmonic current content rate measurement error: ≤0.2%

Three-phase voltage unbalance error: ≤0.2%

4. Working temperature

Working temperature: -10℃~ +40℃

5. Insulation

(1) The insulation resistance of the voltage and current input terminals to the chassis is ≥100MΩ.

(2) The power frequency is 1.5KV (effective value) between the input end of the working power supply and the casing, and the experiment lasted for 1 minute.

6. Standard energy pulse constant

Standard energy pulse constant: built-in transformer constant (FL) = 10000 r/kW·h,

Clamp Transformer Constant (FL):








2000 r/KW·h

500 r/KW·h

100 r/KW·h

125 r/KW·h

25 r/KW·h

7. Weight: 2Kg

8. Dimension: 25cm×16cm×6cm




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Address:13 / F, Building 2, Hangang Science and Technology Industrial Park, Jintan Road, Wuhan, Hubei, China.