At present, the mainstream selection on the market is mainly divided into single-phase and three-phase, and the intelligent WiFi three-phase electric energy meter on-site calibrator is mainly divided into a handheld type and a desktop type, and the specific one can be selected by yourself.
GH-6128 intelligent WiFi dual-operation three-phase electric energy meter field calibrator uses large-screen color liquid crystal as the display, full Chinese graphical operation interface and equipped with Chinese character prompt information, multi-parameter display LCD display interface, friendly dialogue between human and machine. Vector diagram display and wiring judgment provide a reliable basis for checking the correctness of the circuit. Full-touch conductive silicone keyboard operation, easy to operate, easy to learn. The built-in large-capacity power-down does not lose the data memory, and the field calibration data can be saved. Up to 1000 sets of field verification results can be stored. The background microcomputer management software can be provided, and the results can be uploaded to the computer to realize computerized management.
GH-6128 intelligent WiFi three-phase energy meter field calibrator breaks the traditional mode on the basis of all the functions of the traditional electric energy meter field calibrator, and innovatively adopts the Windows system intelligent handheld terminal to control the test unit in the wireless WiFi mode. Realizing the remote control of the instrument by the operator, it is convenient for the administrator to intuitively understand and supervise the field test situation.
Intelligent WiFi three-phase energy meter field calibrator meter connection principle:
Introduction to the principle of three-phase three-wire and three-phase four-wire measurement:
Three-phase three-wire measurement refers to the measurement of three-phase lines by using two power components, which is equivalent to connecting two ammeters in series (series in two phases A and C) and two voltmeters (separate in AB respectively) Between and between CB) and two power meters (current coils are connected in series in phases A and C, voltage coils are connected in parallel between AB and CB)
Three-phase four-wire measurement refers to the measurement of three-phase lines by using three power components, which is equivalent to respectively connecting three ammeters (series in series of A, B, C, respectively) and three voltmeters in the circuit ( Parallel between A, B, and C relative N phases) and three power meters (current coils are connected in series in phases A, B, and C, respectively, voltage coils are connected in parallel between A, B, and C to N)
Technical Parameters:
1. Input characteristic voltage measurement range: 0~450V
Current measurement range: 0~5A, built-in transformer is divided into 5A (CT) file. The clamp transformers are 6A (small pliers), 25A (small pliers), 100A (middle pliers), 500A (middle pliers), 400A (large pliers), and 2000A (large pliers). (The medium-sized clamp and large clamp are optional)
Phase angle measurement range: 0~359.999°.
Frequency measurement range: 45~55Hz.
2. Accuracy measurement and 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 voltage and current amplitude: fundamental voltage allowable error ≤ 0.5% FS; fundamental current allowable error ≤ 1% FS
Measurement error of phase difference between fundamental voltage and current: ≤0.5°
Harmonic voltage content measurement error: ≤0.1%
Harmonic current content measurement error: ≤0.2%
Three-phase voltage imbalance error: ≤0.2%
4, working temperature working temperature: -10 ° C ~ +40 ° C
5, insulation (1), voltage, current input terminal insulation resistance of the casing ≥ 100MΩ.
(2) The working power input end is subjected to a power frequency of 1.5KV (effective value) between the outer casings, and it takes 1 minute to test.
6, standard energy pulse constant standard energy pulse constant: built-in transformer constant (FL) = 10000 r / kW • h,
Clamp type transformer constant (FL):
5A | 25A | 100A | 500A | 400A | 2000A |
10000r/KW·h | 2000 r/KW·h | 500 r/KW·h | 100 r/KW·h | 125 r/KW·h |
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Shenzhen Aierbaita Technology Co., Ltd. , https://www.aierbaitavape.com