In the air compressor chamber in the automotive factory, the engineers need to install the current control points of the old lines to improve energy efficiency, but the conventional assembly of processors must be interrupted, which will shut down the entire production line for a few hours. The "open and closed" design of the shared core of the HEYI DP-816 split core current transformer allows operators to: Quickly complete the installation without interruption in the power supply and avoid enormous losses. This view strongly embodies the value of the DP-816.

1. Industrial automation: Accurate monitoring during continuous production
1.1 Control of pain points of electric motors and air compressors
In industries such as the continuous manufacturing of automobiles and metals, electric motors and air compressors are a basic energy equipment. The installation of conventional low voltage current transformers requires a power outage that leads to the closure of the production line. The DP-816 includes a large internal window of 80mm x 120mm that can easily pass through large-section cables or copper rods. Mounting a double screw guarantees a narrow magnetic circuit that truly achieves "uninterrupted assembly".
1.2 High precision control of frequency conversion system
The motor current driven by the frequency converter contains a large amount of harmonics that require a very high accuracy of the converter. As a high precision ac current transformer, the DP-816 maintains excellent linearity in a wide frequency range from 50 to 400 Hz. It covers the rated current from 500/5A to 2000/5A and the charging capacity can be 10VA. It can directly control various tools and meet the monitoring needs of variable frequency systems.

2. HVAC and building automation: stable work in complex environments
2.1 Challenges in installing small spaces
The space in the air-conditioning and cooling room in commercial buildings is overcrowded. The DP-816 has a built-in shield construction that is mounted with a base or bus band and can flexibly adapt to different cabinets, without having to modify the circuit. In the energy-saving renovation of existing buildings, the open construction allows the installation of control points without affecting the trade processes and significantly reduces construction costs.
2.2 Long-term stability under difficult working conditions
DP-816 is stable in environments from -25°C to +75°C and humidity ≤ 85%, from the damp basement to the sun's surface. Its sealed epoxy construction is moisture and impact resistant. As a fundamental element of the sensor of the energy management system in the building, the accuracy of 0.5 provides an accurate basis for measuring climate and lighting components and helps restoring energy savings.

3.Distribution and new energy: building a secure and intelligent grid
3.1 Access in line with multiple loads
The side side of the DP-816 emits standard signals from 0-5A, which can be connected directly to smart meters and a protector. The insulating power of 2.5 KV guarantees safety and is suitable for new energy scenarios such as light energy converters and charging batteries. In a cabin connected to the light grid, The DP-816 split core current transformer monitors the transformer's power generation current in real time and provides important statistics for power generation and island protection. The installation does not require separation of the DC side.
3.2 Extension of residual current protection
To protect against leaks, the DP series can provide circular residual current transformers to accurately detect grounding faults and prevent electrical fires. In a precise distribution cabinet, the DP-816 data center not only monitors the current of the main circuit, but also detects the insulation state of the line through the residual current monitoring function in real time and ensures a continuous supply of critical load.

4. Conclusion
The HEYI DP-816 split core current transformer combines the high precision of industrial class with convenient installation, effectively solves practical problems in factory automation, saving energy in buildings, controlling new energy and helping build a safer and more efficient intelligent energy system.
Compay: WENZHOU HEYI ELECTRICAL CO.,LTD
Brand: HEYI/ASCT
Contact: Bethy
E-mail: heyi@heyiele.com
Tel: 86-13968747975