Er28 Ferrite Core Transformer with Flying Leads for EV Charging and Energy Management Power Distribution Monitoring

Product Description

CoreLogic R&D Team

Product Description

CL1133

The CL1133 is a high-performance ER28-15W series transformer designed by Beijing CoreLogic Communication Co., LTD. Originally developed for state-level smart grid research institutes, this component is engineered for demanding industrial environments requiring superior insulation and precise inductance stability.

Key Technical Specifications

Model Number: CL1133 (ER28-15W).

Inductance (Pins 9-10): $2\text{ mH} \pm 10\%$ @ 10KHz, 0.25V.

Turns Ratio: Precise multi-winding configuration ($78:78:78:78:14:10:15$).

High Pot Resistance: AC 4500V, 5mA for 60 seconds (Winding to Winding & Winding to Core).

Insulation Resistance: $\geq 100\text{ M}\Omega$ @ DC 500V.

Operating Safety: Lead-free (Pb-free) compliant.

Physical Dimensions & Construction

Compact Footprint: Max dimensions of $29\text{ mm} \times 29\text{ mm} \times 23.5\text{ mm}$.

Pin Configuration: Modified 12-pin layout (Pins 7 & 8 removed for clearance/isolation).

Lead Wire Identification: Includes color-coded flying leads (White, Black, Blue) for easy installation of FL and FX terminals.

Quality Assurance
Every unit undergoes rigorous testing using industry-standard equipment:

Inductance & LCR: HP4284A Precision Meter.

Comprehensive Testing: 3302 Automatic Transformer Test System.

Safety Compliance: YD2673 Dielectric Strength Tester and YD2681A Insulation Resistance Tester.

Applications
Smart Grid Monitoring Systems.
Industrial Power Supplies.
High-Isolation Communication Equipment.
Renewable Energy Inverters.

Specification

Equipments

Production Lines

Packing & Transportation

Company Profile

Company Profile

Founded in 1998, Beijing CoreLogic Communication Co., Ltd. is a specialized manufacturer of telecommunications equipment and electromagnetic components, supported by an experienced in-house R&D team.

The company began its journey in the wireline telecom sector, starting with ISDN technology. Over the years, we have developed a diverse portfolio including ISDN access terminals, xDSL filters and splitters, electromagnetic components, and media converters.

Since 2012, CoreLogic has strategically shifted its focus from wireline telecom to wireless networking solutions. Our current product range includes:

GNSS Timing & Synchronization Systems
GNSS Antennas
Auxiliary Equipment for Mobile Base Stations

Electronic Components – Transformers & Surge Protectors
xDSL Splitter for CO & CPE
IoT Monitoring Devices

With a strong commitment to quality and innovation, CoreLogic has become a trusted supplier for leading enterprises in the broadband industry. Our production facilities are equipped with advanced manufacturing lines and operate under a comprehensive quality assurance system.

We are certified to ISO 9001, ISO 14001, and ISO 45001, ensuring consistent product excellence, environmental responsibility, and workplace safety.

Corporate Culture

At CoreLogic, we believe that a successful business is built on responsibility, respect, and a shared sense of belonging. We are committed to protecting the environment, conserving energy, and reducing emissions, while maintaining a clean, well-organized, and safe production environment. Strict adherence to occupational safety regulations and workplace health standards is an integral part of our daily operations.

For nearly three decades, we have fostered a workplace where colleagues feel like family. Annual team-building events—ranging from sports activities to cultural outings—have become a cherished tradition, strengthening bonds across the company. This spirit of unity, care, and mutual support is what truly sets CoreLogic apart in our industry.

FAQ

Why choose us?

1. nearly 30 years experience in RF & wireless and Timing & Synchronization equipment, more than 100 different items.
2. All products are developed by our experienced R&D team, which allow us to provide best after-sale support&service.
3. Excellent pre-sale and after-sale technical team.
4. High quality with competitive price.
5. Fast feedback and fast delivery.
6. OEM & ODM JDM supported.