35kV Indoor Current Transformer
2.Frequency:50/60Hz
3.Rated primary current:20~2500A
4.Rated secondary current:5 or 1A
5.Standard:GB 20840.2-2014/IEC 61869-1 & 61869-2
6.The transformer is epoxy resin cast fully-enclosed electromagnetic.It features high accuracy, large capacity, and stable performance.
- Fast Delievery
- Quality Assurance
- 24/7 Customer Service
Product Introduction
1.35kV Indoor Current Transformer: Precision & Reliability for Modern Grids
When upgrading your power infrastructure, the 35kV Indoor Current Transformer stands as a critical component for accurate current measurement and system protection. Designed for indoor installations, this transformer combines epoxy resin insulation, high thermal stability, and compliance with IEC/GB standards to deliver unmatched performance in substations, industrial plants, and renewable energy systems.

2.Technical Specifications
- Input Voltage: 35kV
- Frequency: 50/60Hz (Dual-Rated)
- Primary Current: 20–2500A (Customizable)
- Secondary Output: 1A or 5A
- Accuracy Class: 0.2/0.5 for Metering; 5P/10P for Protection
- Standards: GB 20840.2-2014, IEC 61869-1 & 61869-2
- Insulation: Epoxy-Silicone Composite (Partial Discharge <10pC)
| Rated primary current(A) | Rated secondary current(A) | Class combination | Rated secondary output (VA) | Short-time themal current(KA/S) | Rated dynamic current(KA) |
| 20-400 | 5 or 1A | 0.2/0.5/10P10 0.2S/0.5/10P15 0.2/0.5/10P10/10P10 0.2S/0.5/10P15/10P15 | 15/15/50 15/15/30 15/15/30/30 15/15/20/20 | 80l1n | 200l1n |
| 500 | 40 | 100 | |||
| 600 | 48 | ||||
| 800 | 50 | ||||
| 1000 | 63 | 130 | |||
| 1200 | |||||
| 1500 | |||||
| 2000 | |||||
| 2500 | 80 | 140 |
3.Key Features & Benefits
1. Advanced Insulation Technology
The fully enclosed epoxy resin casting ensures resistance to humidity, dust, and chemical corrosion, making this 35kV current transformer ideal for harsh indoor environments.
2. High Accuracy & Wide Dynamic Range
With a 0.2 class accuracy for metering and 5P/10P for protection, it supports precise energy billing and fault detection across diverse loads.
3. Compact & Space-Saving Design
Optimized dimensions simplify integration into switchgear panels (e.g., Siemens, ABB) without retrofitting, reducing installation time by 30%.
4. Dual-Frequency Compatibility
Operates seamlessly in both 50Hz and 60Hz grids, perfect for global projects requiring cross-regional interoperability.
4.Applications
Be used in a wide range of industries.

Industrial Plants
Eliminate power factor penalties in CNC machines and assembly lines while handling surge currents up to 100x rated capacity.

Substation
Stabilizes substation voltage against harmonics and intermittent generation from renewable inverters.

Commercial Buildings
Retrofit aging systems in hospitals or malls with silent (<45dB), flame-retardant capacitors that meet NFPA 70 fire codes.
5.How It Works?
The 35kV Indoor Current Transformer steps down high-voltage currents to safer, measurable levels. Its primary winding connects in series with the circuit, while the secondary winding delivers a proportional current to meters or relays. The epoxy-encased core minimizes magnetic interference, ensuring signal integrity.
6.Manufacturing & Quality Assurance
- Automated Casting: Robotic epoxy resin application guarantees uniform insulation.
- Testing Protocols: 100% routine tests include partial discharge, ratio error, and dielectric strength checks.
- Certifications: ISO 9001, ISO 14001
7.Why Choose Us?
- 30+ Years of Expertise: Developed under China’s 863 Program for cutting-edge grid tech.
- Custom Solutions: Modify ratios, secondary windings, or enclosures per your specs.
- Lifetime Support: Installation guidance, 5-year warranty, and 24/7 technical assistance.



8.FAQs
1. What certifications do your 35kV transformers have?
Our units meet CE, UL, IEC, and GB standards.
2. Can I request custom current ratios?
Yes! We offer ratios from 20/5A to 2500/1A, tailored to your grid’s needs.
3. How long is the lead time for European orders?
Standard orders ship in 4–6 weeks, including customs clearance.
4. Do you provide test reports?
Comprehensive reports (ratio, dielectric, PD tests) are included with every shipment.
5. What’s the lifespan of your transformers?
Designed for 25+ years of service with minimal maintenance.
9.Contact Us
Need a reliable 35kV Indoor Current Transformer supplier? Email our team at xaxd_electric@163.com for quotes, CAD drawings, or technical details.
Optimize your grid’s efficiency today with our ISO-certified products – engineered for precision, built for tomorrow.
10.Factory Show


11.Equipment Display

12.Application Cases
State Grid systems, power engineering, steel and metallurgy, petrochemicals, rail transportation, energy and water conservancy, construction, environmental protection, and renewable energy sectors
13.Team and Exhibition

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