The LDDN-8 three-phase energy meter calibrator is a high-precision, multifunctional on-site calibration device for energy meters. This calibrator integrates electrical parameter measurement, energy meter calibration, and wiring judgment, designed specifically to meet the high-precision calibration requirements of power systems for energy metering equipment. Adopting a high-end embedded control board and a dedicated real-time multitasking operating system, equipped with a 10 inch large screen true color LCD display and a fully Chinese graphical operation interface, the operation is simple and intuitive. This instrument is not only suitable for the calibration of three-phase three wire, three-phase four wire, and single-phase energy meters, but also supports the detection of multiple energy meter communication protocols. It is an ideal tool for power departments, metrology institutions, and power users to calibrate and manage energy meters.
| Input properties | |
| Voltage measurement range | 0 ~ 400V, 57.7V, 100V, 220V, 400V four automatic switching range. |
| Current measurement range | 0 ~ 5A. The built-in current transformers is 5A (CT). |
| The clamp transformer has six tap position: small clamp(5A/25A); middle clamp (100A /500A) (optional);large clamp (400A/2000A).(optional) | |
| Phase angle measurement range | 0 ~ 359.999° |
| Frequency measurement range | 45 ~ 55Hz |
| Accuracy | |
| Voltage | ± 0.05% |
| Current | ± 0.05% (clamp transformer ± 0.2%) |
| Active power | ± 0.05% (clamp transformer ± 0.2%) |
| Reactive power | ± 0.2% (clamp transformer ± 0.5%) |
| Active electric energy | ± 0.05% (clamp transformer ± 0.2%) |
| Reactive electric energy | ± 0.2% (clamp transformer ± 0.5%) |
| Frequency | ± 0.05% |
| Phase | ± 0.2 ° |
| Power quality | |
| Harmonic frequency measurement range | 2-64 |
| Fundamental voltage and current amplitude | allowable error of fundamental voltage ≤ 0.5% F.S;Allowable error of fundamental current ≤ 1% F.S |
| Measurement error of phase difference between fundamental voltage and current | ≤ 0.5 ° |
| Measurement error of harmonic voltage content | ≤ 0.1% |
| Measurement error of harmonic current content | ≤ 0.2% |
| Three phase voltage unbalance error | ≤ 0.2% |
1. The appearance of the product is subject to the actual product. Technical parameters and models are subject to change without prior notice. 2. To learn more about Longdian products, please enter the product center. Service Hotline: 400-6727-238
High precision measurement and calibration: It has the ability to measure electrical parameters such as voltage, current, active power, reactive power, phase, and frequency with high precision, as well as the calibration function of electric energy meters. The calibration accuracy reaches 0.05 level, ensuring the accuracy of electric energy metering equipment.
Multi functional integration: This instrument integrates multiple functions such as energy meter calibration, electrical parameter testing, harmonic analysis, and wiring judgment, and can comprehensively evaluate the performance and status of energy metering equipment. At the same time, it supports multiple verification methods such as photoelectric, manual, pulse, etc., to meet the testing needs in different scenarios.
Convenient operating interface: Adopting a high-resolution capacitive touch screen, the operation feels good and easy to learn. The fully Chinese graphical user interface is equipped with Chinese character prompts, making the operation more intuitive and convenient.
Large capacity data storage and management: Built in large capacity data storage without losing data in case of power failure, capable of storing up to 60000 sets of on-site verification results. Support importing record files into computers through USB drives to achieve computerized data management, facilitating user data analysis and report generation.
Online real load detection: It can achieve comprehensive error of online real load detection and measurement equipment without power outage or changing the measurement circuit, improve work efficiency, and reduce power outage time.
Intelligent wiring judgment: Under the three-phase three wire wiring mode, it can automatically judge 48 wiring modes and provide correction factors for erroneous wiring, making it convenient for users to quickly locate problems and take measures.
Flexible scalability: Optional barcode scanner can be used to automatically input barcodes into the energy meter. At the same time, it supports virtual load function and can verify the energy meter on site without load.
High performance and portability: Adopting a high-strength self extending handle and engineering plastic shell design, it is both beautiful and practical. The instrument has a small volume, light weight, and is easy to carry. It can be used for on-site measurement or as a standard measuring equipment in laboratories.
