The rated voltage is 10kV, and it adopts a sleeve type integrated structure design. The iron core is made of high-quality silicon steel sheets/Permalloy, and the shell is made of high-strength epoxy casting material, which is vacuum cast and precision processed. The product is designed with the core concept of "strong adaptability, excellent insulation, compact structure, and reliable operation", fully meeting the current measurement, fault protection, and operation monitoring needs of medium and high voltage equipment such as transformers, high voltage switches, GIS equipment, etc. It strictly complies with international and domestic standards such as IEC 61869-2, GB 1208, ANSI C57.13, and is compatible with the specifications of medium and high voltage power grids in most countries around the world. It is the preferred current measurement equipment in the fields of power equipment matching, substation upgrading, and high voltage equipment renovation.
Product Parameter
|
Parameter Name |
Technical Specifications |
|
Rated Voltage |
10kV (Um=12kV) (3kV/6kV/20kV/35kV can be customized) |
|
Rated Primary Current |
100A/200A/300A/400A/630A/800A (customizable) |
|
Rated Secondary Current |
5A/1A (standard configuration, customizable) |
|
Accuracy Class |
Measurement level: 0.2S/0.5S; Protection level: 5P10/5P20/10P10 (customizable in combination) |
|
Rated Burden |
5VA/10VA/15VA/20VA (secondary side) |
|
Core Material |
High grade Silicon Steel/Permalloy |
|
Housing Material |
High strength Epoxy Resin Casting |
|
Suitable Bushing Diameter |
50mm/60mm/80mm/100mm/120mm (customizable according to equipment casing) |
|
Insulation Level |
12kV/42kV/105kV (lightning impulse/power frequency withstand voltage without breakdown) |
|
Rated Operating Temperature |
-40℃ ~ 70℃ |
|
Protection Class |
IP65 (outdoor type)/IP54 (indoor type) |
|
Electromagnetic Compatibility (EMC) |
Compliant with IEC 61000-4 standard, strong anti electromagnetic interference capability |
|
Installation method (Mounting Type) |
Sleeve installation (suitable for transformer, circuit breaker, GIS equipment sleeves) |
|
Creepage Distance |
≥ 315mm (10kV level, compliant with pollution level II) |
|
Rated Short time Thermal Current |
31.5kA/1s (higher specifications can be customized) |
Product feature and application
Adopting a sleeve type integrated design, it can be directly installed on the sleeves of transformers, high-voltage switches, and GIS equipment without occupying additional installation space. It is compatible with the sleeve specifications of most medium and high-voltage equipment, easy to install, and has strong compatibility with the equipment.
-Excellent insulation and high voltage adaptation:
The high-strength epoxy casting shell is made by vacuum casting technology, with excellent insulation performance and sufficient creepage distance. It can withstand high voltage of 10kV~35kV, effectively resist lightning impulse and power frequency withstand voltage, eliminate the risk of insulation breakdown, and adapt to the operation requirements of high voltage equipment.
High permeability silicon steel sheet/Permalloy iron core is selected, with low hysteresis loss and eddy current loss. Combined with precision winding technology, the measurement accuracy reaches 0.2S level, with an error of ≤ 0.2%, which can accurately collect operating current data of high-voltage equipment.
The integrated compact structure design is small in size and light in weight, which can adapt to the installation of narrow spaces inside the equipment without affecting the overall layout of the equipment. It is especially suitable for space limited scenarios such as GIS equipment and compact transformers.
Supports voltage levels of 3kV~35kV, customized sleeve diameters for multiple specifications, and can be combined with "metering level+protection level" dual precision to meet the matching needs of different high-voltage equipment and meet the global multi regional power grid standards.
It can be used in various scenarios.
-Transformer matching: High voltage side bushing matching for oil immersed transformers and dry-type transformers, accurate measurement of transformer operating current, providing data support for transformer protection and measurement.
-High voltage switchgear field: Installation of bushings for high-voltage circuit breakers, isolating switches, and load switches, suitable for current monitoring and fault protection requirements of switchgear.
-GIS equipment matching: Integrated installation of gas insulated switchgear (GIS) and compact switchgear sleeves, suitable for limited space scenarios, ensuring stable operation of equipment.
-In the field of power distribution: the renovation of high-voltage equipment in outdoor substations, high-voltage distribution stations, and switch stations, and the upgrading of current measurement with existing equipment sleeves.
-In the field of industrial high voltage, the bushing matching of high voltage equipment (such as high voltage motors and rectification equipment) in heavy industries such as metallurgy, chemical industry, and steel is suitable for high load and strong interference scenarios.
-Overseas engineering field: export of overseas medium and high voltage equipment, power grid construction projects, can be customized according to overseas equipment casing specifications and power grid standards to meet the needs of overseas markets.
Production details
1. High quality Core Structure
High permeability and high-quality silicon steel sheets or Permalloy iron cores are selected, and processed through precision lamination and vacuum annealing processes to minimize hysteresis and eddy current losses, ensuring long-term stable measurement accuracy; The iron core adopts a fully enclosed shielding structure, effectively isolating external electromagnetic interference and improving the measurement reliability in strong electromagnetic environments around high-voltage equipment.
2. Bushing type Adaptation Structure
Adopting a sleeve type integrated structure, the inner hole is precision machined, the inner wall is smooth, and it can be tightly fitted onto the equipment sleeve. After installation, it has a high degree of fit and no looseness with the equipment; Support customized casing diameters for multiple specifications, accurately matching the casing sizes of different manufacturers and models of high-voltage equipment, with strong compatibility.
3. High strength Epoxy Casting Housing
Made from imported high-quality epoxy resin through vacuum casting and high-temperature curing processes, the shell has strong density, no bubble defects, and excellent insulation performance; It has outstanding UV resistance, aging resistance and corrosion resistance. The outdoor protection grade reaches IP65, and can withstand outdoor rain, dust and other harsh environments. The indoor type is suitable for the internal dry environment of the equipment.
4. Precise Winding&Wiring Terminal
The primary winding is made of highly conductive copper material, precision wound, with precise turns and firm connections, and can withstand high current and short-term short-circuit current impact; The secondary side is equipped with copper terminal blocks, which have good conductivity and low contact resistance. The terminal markings are clear ("P1/P2" and "S1/S2"), making it easy to connect and avoid measurement errors caused by reverse connection.
5. Adaptive Sealing Structure
Equipped with a dedicated sealing gasket, it can achieve good sealing when installed on the equipment casing, preventing rainwater, dust, and oil from entering the interior of the equipment and ensuring the insulation performance of the equipment and CT itself; The sealing structure is adaptable to different casing diameters, ensuring reliable sealing and no risk of leakage after installation.
Product Certification
Sunrise adheres to the bottom line of quality, and the SR-BCT series bushing current transformers have passed multiple international authoritative certifications to ensure that their products meet global market access standards and provide customers with solid quality assurance.
FAQ
Q: Does the casing CT comply with our country's power grid standards and equipment casing specifications?
A: Yes. This product strictly complies with the IEC 61869-2 international standard (special requirements for sleeve CT), and can also adapt to regional standards such as ANSI C57.13 (USA), BS EN 61869 (UK), VDE 0414 (Germany), etc; The sleeve diameter supports 50mm~120mm and customized specifications, which can accurately match the sleeve size of mainstream high-voltage equipment (transformers, circuit breakers) worldwide. We have provided adaptable sleeve CT products for high-voltage equipment supporting projects in over 70 countries worldwide, with rich experience in adapting to overseas markets.
Q: What is the warranty period for the product? What services are provided within the warranty scope
A: We promise a product warranty period of 7 years (calculated from the date of acceptance), which is compatible with the service life of high-voltage equipment. During the warranty period, if the measurement accuracy deviation or insulation failure is caused by the quality of the product itself (iron core, epoxy shell, winding process), we will provide free replacement services; Simultaneously providing 7 × 24-hour technical support, remote guidance for installation and adaptation, troubleshooting, and on-site technical services provided by engineers for overseas equipment supporting projects.
Q: How to choose the appropriate fitting sleeve diameter and rated current?
A: The selection criteria are as follows: ① Suitable casing diameter: Select according to the actual outer diameter of the high-voltage equipment casing, ensuring that the CT inner hole is 1-3mm larger than the casing outer diameter, ensuring smooth installation and tight fit (if the casing outer diameter is 80mm, 82mm inner hole CT can be selected); ② Rated current: Select based on the rated current and maximum operating current of the equipment, with a 20% to 30% margin reserved (for example, if the rated current of the transformer is 300A, a 400A rated current CT can be selected). We can provide accurate selection solutions for free based on the specifications of the equipment casing and working current you provide.
Packing & Shipping
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