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5A To 100A PCB Mount AC Current Transformers For Smart Energy Meter
Place of Origin:
China
Brand Name:
Chipsen
Certification:
UL/CUL/ISO9001/ISO14001/RoHS/Reach/IATF16949
Model Number:
CT102
Minimum Order Quantity:
1000
Price:
US$0.5-2.5
Packaging Details:
Carton 1: 25.5 X 21.5 X 21cm Carton 2: 43.5 x 24.5 x 21 cm
Payment Terms:
T/T
Supply Ability:
10000000/Month
Inquiry Now
Get A Quote
Specifications
Highlight Features
PCB Mount ac current transformers
,100A ac current transformers
,5A current measurement transformer
Current Ratio:
100A/5A, 3000A/1A, Etc.
Usage:
Current Measurement / Protection
Accuracy Class:
Class 0.5 / 0.5s / 0.2 / 0.1
Housing Material:
UL94-V0 Flame Retardant Plastic
Type:
Split-core / Solid-core / Clamp-on
Model Number:
DP / K-S / SCT-Series
Product Description
Miniature PCB Mount Current Transformer 5A to 100A Ratio Precision Instrument Current Sensor RoHS REACH Certified for Smart Energy Meter
Product Overview
A Current Transformer (CT) is a precision instrument designed to produce a reduced current in its secondary winding that is proportional to the AC current in its primary conductor. By scaling down high-amperage primary currents to standardized, measurable levels (typically 1A or 5A), CTs allow for the safe monitoring and protection of electrical systems without requiring high-power metering equipment.
Technical Specifications
| Parameter | Typical Value / Spec |
|---|---|
| Type | Split-core / Solid-core / PCB Mount |
| Enclosure Material | Flame Retardant Plastic (UL94-V0) |
| Mounting Type | Busbar / Cable / PCB Pin / Din-rail |
| Primary Current Range | 5A - 5000A AC |
| Secondary Output | 5A / 1A / 333mV / mA |
| Accuracy Class | 0.1 / 0.2s / 0.5 / 1.0 (IEC 61869) |
| Rated Burden (Load) | 1.0VA - 30VA |
| Rated Voltage (Um) | 0.66kV / 0.72kV AC |
| Hi-Pot (Isolation) | 3.0KV AC / 1min |
| Rated Frequency | 50Hz / 60Hz |
| Core Material | Silicon Steel / Permalloy / Nano-crystalline |
| Operating Temp | -25°C to +70°C |
| Compliance | CE, RoHS, UL recognized, ISO9001 |
Product Features
- Superior Accuracy Classes: Available in various precision grades, including Class 0.1, 0.2s, 0.5, and 1.0, ensuring reliable data for revenue-grade billing to general industrial monitoring
- High-Permeability Core: Utilizing premium Silicon Steel or specialized Permalloy cores for exceptional linearity and minimal phase shift
- Flame-Retardant Enclosure: Housed in high-strength, UL94-V0 rated polycarbonate or ABS plastic
- Standardized Secondary Output: Optimized for various secondary signals including 5A/1A for traditional meters and 333mV/mA for low-power IoT energy sensors
- Broad Range of Designs: Available in Split-core (retrofit installation), Solid-core (new builds), and Busbar-mounted configurations
Technical FAQs
Why is it extremely dangerous to leave the secondary circuit of a current transformer open while the primary is energized?
In a current transformer, the primary current is independent of the secondary load. If the secondary circuit is opened, the secondary "counter-MMF" (Magnetomotive Force) disappears. This causes all of the primary current to become magnetizing current, driving the core into deep saturation. This leads to two critical failures: first, it induces extremely high voltage peaks (kilovolts) across the secondary terminals, which can be fatal to personnel and destroy insulation. Second, the massive iron losses from saturation generate intense heat, which can permanently damage the core and melt the windings. Always ensure a load (burden) or a short-circuit link is connected before energizing.
What is the technical difference between an "Accuracy Class 0.5" and a "Class 0.5s" current transformer?
The "s" in Class 0.5s stands for "Special." While both have a 0.5% error limit at 100% and 120% of the rated current, Class 0.5s is specifically calibrated to maintain high accuracy at much lower current levels. For instance, a Class 0.5 CT may have significant error at 5% of its rated current, whereas a Class 0.5s CT is guaranteed to remain within its tight error margins from 20% down to 1% of the rated current. This makes the "s" class indispensable for applications with highly variable loads, such as solar inverters or modern industrial facilities during low-load standby periods.
Product Applications
- Energy Management Systems (EMS): Provides data input for industrial power meters and sub-metering modules in factories and commercial buildings
- Relay Protection: Critical for detecting overcurrent, ground faults, and short-circuit conditions to trigger circuit breakers
- IoT & Smart Grids: Integral for real-time current sensing in cloud-connected energy monitors and smart distribution boxes
- Motor Control Centers (MCC): Monitors load current of heavy-duty induction motors to prevent overheating and mechanical failure
Product Advantages
- Enhanced Operational Safety: Provides complete Galvanic Isolation between high-power primary lines and secondary monitoring circuits
- Ease of Installation: Split-core models feature snap-on mechanism for installation without disconnecting power cables
- Exceptional Thermal Stability: Designed to ensure consistent performance under significant ambient temperature fluctuations (-25°C to +70°C)
- Long-Term Reliability: Every unit undergoes rigorous dielectric and ratio testing for maintenance-free service life over 15 years
Company Profile
Chipsen Electronics Technology Co., Ltd., established in 2000, is a specialized manufacturer of high frequency transformer, low frequency transformer, toroidal inductor, SMD power inductor, super high current inductor, choke coil and switch. Chipsen has earned a strong reputation in domestic and international markets including North & South America, Europe and Southeast Asia.
As an ISO9001, ISO14001 & IATF16949 audited company, we are committed to producing environmental protection and qualified products. Our products are certified by UL Class B/Class F/Class H, CQC and RoHS, and we hold 21 patents.
Vision: To Be Global Transformer Brand Supplier
Mission: Create Values for Customers and Society, Grow with Customers and Staffs
Values: Customer First, Team Cooperation, Embrace Changes, Integrity, Creative & Happy
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