Residual Current Transformer for Electrical Fire Monitoring
The residual current transformer is a high-precision front-end current acquisition component specifically designed to complement electrical fire monitoring systems. Featuring a pass-through design, the product is installed on the main circuit or individual branch distribution lines to monitor residual current (leakage current) within the power distribution network in real time, utilizing the principle of electromagnetic induction. When the line experiences insulation aging, damage, or leakage resulting from a ground fault, the transformer rapidly and linearly converts these faint leakage signals into standardized electrical signals. These signals are then transmitted to an electrical fire monitoring detector (such as the BY-R series), thereby enabling the precise early warning and prevention of potential fire hazards.
Description
Product Advantages
1. High Precision and Excellent Linearity: Specifically designed for the detection of faint residual currents, featuring exceptional linearity and ultra-high detection sensitivity to ensure precise leakage data acquisition without false negatives.
2. Robust Anti-Interference Capability:Utilizes an epoxy resin encapsulation structure with an internally treated magnetic core; it boasts excellent resistance to high-current surges, maintains a high level of accuracy, and effectively blocks external electromagnetic noise.
3. Safe, Flame-Retardant Enclosure: The housing is crafted from select, high-quality flame-retardant ABS material, offering superior insulation, thermal resistance, and mechanical strength to fully guarantee operational safety within harsh power distribution environments.
4. Comprehensive Specifications for Perfect Compatibility: BY-DH Series (Circular): Features inner diameters ranging from φ45mm to φ125mm, providing a perfect fit for cables of various thicknesses.
5. BV-DF Series (Rectangular): Specifically engineered for high-current copper busbars; supports maximum dimensions of 300 × 60mm, thereby meeting the diverse integration requirements of various power distribution cabinets.
Product Specifications
| Model | Rated Current | Inner Diameter (mm) | Overall Dimensions (mm) | Cable Type |
| BY-DH160 | 160A | φ45 | 135*36*93 | Cable |
| BY-DH250 | 250A | φ65 | 149*36*113 | Cable |
| BY-DH400 | 400A | φ80 | 162*37*137 | Cable |
| BY-DH630 | 630A | φ105 | 204*37*163 | Cable |
| BY-DH800 | 800A | φ125 | 233*46*193 | Cable |
| BY-DF250 | 250A | 128*32 | 224*85*45 | Copper Bar |
| BY-DF400 | 400A | 225*56 | 350*140*47 | Copper Bar |
| BY-DF1000 | 1000A | 300*60 | 406*185*63 | Copper Bar |
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