Unwavering in our dedication to customers and delivering cutting-edge innovations,Bepto stands as your steadfast ally on the journey ahead.
LZZBJ4-35 Current Transformer 35kV Indoor CT: 50-1600A multi-ratio, 0.2/0.5/10P10/10P15/5P20 accuracy class, 120×In thermal capacity for 50-200A, 300×In dynamic current, 40.5/95/185kV insulation level, quad winding, 15-50VA burden, 5A/1A secondary, 50/60Hz, GB1208 IEC60044-1, metering & protection.
Advanced LZZBJ4-35 Current Transformer: Indoor single-phase epoxy resin casting type CT conforming to GB1208 and IEC60044-1 standards, rated insulation level 40.5/95/185kV, rated frequency 50Hz or 60Hz, rated secondary current 5A or 1A, ambient temperature -5°C to +40°C, rated primary current range 50-1600A with flexible multi-ratio configurations including single ratio, two-ratio, and three-ratio options providing comprehensive current coverage, quad winding configuration enabling simultaneous high-precision metering and triple protection functions, flexible accuracy class combinations including 0.2/0.2/10P/10P, 0.2/0.5/10P/10P, 0.2/10P/10P/10P, 0.5/10P/10P/10P, and 10P/10P/10P/10P with burden capacity 15-50VA, exceptional thermal performance with 120×In (1s thermal current) for 50-200A range ensuring superior short-circuit withstand capability, 300×In rated dynamic current providing maximum safety margin.
Superior Multi-Ratio Design and Exceptional Thermal Capacity: LZZBJ4-35 features flexible multi-ratio configurations (single, two-ratio, three-ratio) enabling versatile current measurement applications from 50A to 1600A without transformer replacement, exceptional 120 times rated current thermal capacity for low current range (50-200A) ensuring outstanding short-circuit protection, rated dynamic current up to 300×In for 50-200A range providing maximum safety margin, quad winding configuration supporting simultaneous high-precision metering and triple protection relay functions, suitable for 35kV switchgear, medium voltage power distribution systems, large capacity substations, industrial power networks, energy management systems, and applications requiring flexible current measurement ranges with exceptional thermal withstand capability and multi-ratio versatility.
| LZZBJ4-35 Current Transformer Specifications | Parameter | Unit |
|---|---|---|
| Brand | Bepto Insulation Systems | – |
| Model Number | LZZBJ4-35 | – |
| Category | Switchgear & HV CT (High Voltage Current Transformer) | – |
| Product Type | 35kV Indoor Single-Phase Epoxy Resin Casting Type Medium Voltage Current Transformer with 50-1600A Multi-Ratio Configuration, 120×In Thermal Capacity, 300×In Dynamic Current, Quad Winding, 0.2/0.5/10P/5P Accuracy Class, 40.5/95/185kV Insulation for Metering & Triple Relay Protection | – |
| Core Technology | Indoor Single-Phase Epoxy Resin Casting Type + 35kV Medium Voltage Design + Exceptional 120×In Thermal Capacity for 50-200A Range + Superior 300×In Dynamic Current for 50-200A Range + Flexible Multi-Ratio Configurations (Single, Two-Ratio, Three-Ratio) + Quad Winding Configuration + GB1208 and IEC60044-1 Standards Compliant + Rated Insulation Level 40.5/95/185kV + Rated Frequency 50Hz or 60Hz + Rated Secondary Current 5A or 1A + Ambient Temperature -5°C to +40°C + Rated Primary Current Range 50-1600A + Comprehensive Current Coverage + Flexible Accuracy Classes (0.2/0.2/10P/10P, 0.2/0.5/10P/10P, 0.2/10P/10P/10P, 0.5/10P/10P/10P, 10P/10P/10P/10P) + Burden Capacity 15-50VA + 1s Thermal Current 16-75kA for Higher Ranges + Rated Dynamic Current 40-110kA + Simultaneous High-Precision Metering and Triple Protection Functions + Superior Short-Circuit Withstand Capability + Maximum Safety Margin + Versatile Current Measurement Without Transformer Replacement | – |
| Power (Voltage) | 35kV | – |
| Rated Voltage | 35kV | – |
| Rated Insulation Level | 40.5/95/185 | kV |
| Rated Frequency | 50Hz or 60Hz | Hz |
| Rated Secondary Current | 5A or 1A | A |
| Rated Primary Current Range | 50-1600 | A |
| Ambient Temperature | -5°C to +40°C | °C |
| Structure Type | Indoor Single-Phase Epoxy Resin Casting Type | – |
| Ratio Configuration | Multi-Ratio (Single, Two-Ratio, Three-Ratio) | – |
| Winding Configuration | Quad Winding (Four Windings) | – |
| Voltage Level | Medium Voltage (35kV) | – |
| Installation Type | Indoor | – |
| Phase | Single Phase | – |
| Standards Compliance | GB1208 and IEC60044-1 | – |
| FOB Port | Ningbo/Shanghai | – |
| Terms of Payment | Western Union, T/T, Paypal | – |
| Epoxy Resin Casting | Yes (Indoor Single-Phase Epoxy Resin Casting Type) | – |
| 35kV Medium Voltage | Yes (35kV Rated Voltage) | – |
| Medium Voltage CT | Yes (Medium Voltage Current Transformer) | – |
| 120×In Thermal Capacity | Yes (120×In Thermal Current for 50-200A Range) | – |
| 300×In Dynamic Current | Yes (300×In Dynamic Current for 50-200A Range) | – |
| Multi-Ratio Configuration | Yes (Single, Two-Ratio, Three-Ratio Options) | – |
| Quad Winding Configuration | Yes (Four Windings for Metering and Triple Protection) | – |
| Exceptional Thermal Performance | Yes (Superior Short-Circuit Withstand Capability) | – |
| Maximum Safety Margin | Yes (300×In Dynamic Current for Maximum Safety) | – |
| 50Hz or 60Hz | Yes (Rated Frequency 50Hz or 60Hz) | – |
| 35kV Rated Voltage | Yes (Rated Voltage 35kV) | – |
| GB1208 Compliant | Yes (In Accordance with GB1208 Standard) | – |
| IEC60044-1 Compliant | Yes (In Accordance with IEC60044-1 Standard) | – |
| 40.5/95/185kV Insulation | Yes (Rated Insulation Level 40.5/95/185kV) | – |
| 5A or 1A Secondary | Yes (Rated Secondary Current 5A or 1A) | – |
| -5°C to +40°C Ambient | Yes (Ambient Temperature -5°C to +40°C) | – |
| 50-1600A Primary Range | Yes (Rated Primary Current Range 50-1600A) | – |
| Comprehensive Current Coverage | Yes (From 50A to 1600A Primary Current) | – |
| 0.2 Accuracy Class | Yes (0.2 Metering Accuracy Class Available) | – |
| 0.5 Accuracy Class | Yes (0.5 Metering Accuracy Class Available) | – |
| 10P10 Protection Class | Yes (10P10 Protection Accuracy Class Available) | – |
| 10P15 Protection Class | Yes (10P15 Protection Accuracy Class Available) | – |
| 5P20 Protection Class | Yes (5P20 Protection Accuracy Class Available) | – |
| 15-50VA Burden Capacity | Yes (Burden Capacity 15-50VA) | – |
| Single Transformation Ratio | ||||||||
| Rated primary current (A) | Accuracy classes combination | 0.2 (VA) | 0.5 (VA) | 10P10 (VA) | 10P15 (VA) | 5P20 (VA) | 1s thermal current (kA) | Rated dynamic current (kA) |
| 50–200 | 0.2/0.2/10P/10P | 20 | 40 | 50 | 40 | 30 | 120 × In | 300 × In |
| 300–400 | 0.2/0.5/10P/10P | 20 | 40 | 50 | 40 | 30 | 100 × In | 250 × In |
| 500–800 | 0.2/10P/10P/10P | 20 | 40 | 50 | 40 | 30 | 50 | 100 |
| 1000–1250 | 0.5/10P/10P/10P | 20 | 40 | 50 | 40 | 30 | 56 | 110 |
| 1500–1600 | 10P/10P/10P/10P | 20 | 40 | 50 | 40 | 30 | 75 | 110 |
| Two Transformation Ratio | ||||||||
| Rated primary current (A) | Accuracy classes combination | 0.2 (VA) | 0.5 (VA) | 10P10 (VA) | 10P15 (VA) | 10P20 (VA) | 1s thermal current (kA) | Rated dynamic current (kA) |
| 50–100 | 0.2/0.2/10P/10P | 15 | 25 | 50 | 40 | 30 | 120 × In | 300 × In |
| 75–150 | 0.2/0.5/10P/10P | 15 | 25 | 50 | 40 | 30 | 16 | 40 |
| 100–200 | 0.2/10P/10P/10P | 15 | 25 | 50 | 40 | 30 | 20 | 50 |
| 150–300 | 0.5/10P/10P/10P | 15 | 25 | 50 | 40 | 30 | 31.5 | 80 |
| 200–400 | 10P/10P/10P/10P | 15 | 25 | 50 | 40 | 30 | 40 | 100 |
| 300–600 | 10P/10P/10P/10P | 20 | 40 | 50 | 40 | 30 | 40 | 100 |
| 400–800 | 10P/10P/10P/10P | 20 | 40 | 50 | 40 | 30 | 40 | 100 |
| 500–1000 | 10P/10P/10P/10P | 20 | 40 | 50 | 40 | 30 | 40 | 100 |
| 600–1200 | 10P/10P/10P/10P | 20 | 40 | 50 | 40 | 30 | 40 | 100 |
| 750–1500 | 10P/10P/10P/10P | 20 | 40 | 50 | 40 | 30 | 40 | 100 |
| 800–1600 | 10P/10P/10P/10P | 20 | 40 | 50 | 40 | 30 | 40 | 100 |
| Three Transformation Ratio | ||||||||
| Rated primary current (A) | Accuracy classes combination | 0.2 (VA) | 0.5 (VA) | 10P10 (VA) | 10P15 (VA) | 10P20 (VA) | 1s thermal current (kA) | Rated dynamic current (kA) |
| 50–75–100 | 0.2/0.2/10P/10P | 15 | 25 | 50 | 40 | 30 | 120 × In | 300 × In |
| 75–100–150 | 0.2/0.5/10P/10P | 15 | 25 | 50 | 40 | 30 | 16 | 40 |
| 100–150–200 | 0.2/10P/10P/10P | 15 | 25 | 50 | 40 | 30 | 20 | 50 |
| 150–200–300 | 0.5/10P/10P/10P | 15 | 25 | 50 | 40 | 30 | 31.5 | 80 |
| 200–300–400 | 10P/10P/10P/10P | 15 | 25 | 50 | 40 | 30 | 40 | 100 |
| 300–400–600 | 10P/10P/10P/10P | 15 | 25 | 50 | 40 | 30 | 40 | 100 |
| 400–500–600 | 10P/10P/10P/10P | 15 | 25 | 50 | 40 | 30 | 40 | 100 |
| 500–600–800 | 10P/10P/10P/10P | 15 | 25 | 50 | 40 | 30 | 40 | 100 |
| 600–800–1000 | 10P/10P/10P/10P | 15 | 25 | 50 | 40 | 30 | 40 | 100 |
| 800–1000–1200 | 10P/10P/10P/10P | 20 | 40 | 50 | 40 | 30 | 40 | 100 |
| 1000–1200–1500 | 10P/10P/10P/10P | 20 | 40 | 50 | 40 | 30 | 40 | 100 |
| Rated Primary Current (A) | 120×In Thermal Current (kA) | 300×In Dynamic Current (kA) |
|---|---|---|
| 50 | 6 | 15 |
| 75 | 9 | 22.5 |
| 100 | 12 | 30 |
| 150 | 18 | 45 |
| 200 | 24 | 60 |
| Ratio Configuration | Current Range Examples | Key Advantage | Typical Application |
|---|---|---|---|
| Single Ratio | 50A, 100A, 200A, 300A, 500A, 800A, 1000A, 1500A | Fixed current measurement with highest accuracy | Dedicated current monitoring applications |
| Two-Ratio | 50-100A, 75-150A, 100-200A, 150-300A, 200-400A, 300-600A, 400-800A, 500-1000A, 600-1200A, 750-1500A, 800-1600A | Flexible dual current range without replacement | Variable load applications requiring two measurement ranges |
| Three-Ratio | 50-75-100A, 75-100-150A, 100-150-200A, 150-200-300A, 200-300-400A, 300-400-600A, 400-500-600A, 500-600-800A, 600-800-1000A, 800-1000-1200A, 1000-1200-1500A | Maximum flexibility with three current ranges | Highly variable load applications requiring multiple measurement ranges |
| Winding Configuration | Accuracy Classes Combination | Winding Function | Application Scenario |
|---|---|---|---|
| 0.2/0.2/10P/10P | Metering 1 + Metering 2 + Protection 1 + Protection 2 | Dual high-precision metering with dual standard protection | Precise billing and dual relay protection (50-200A) |
| 0.2/0.5/10P/10P | Metering 1 + Metering 2 + Protection 1 + Protection 2 | High-precision + standard metering with dual standard protection | Mixed metering requirements and dual relay protection (300-400A) |
| 0.2/10P/10P/10P | Metering + Protection 1 + Protection 2 + Protection 3 | High-precision metering with triple standard protection | Precise billing and triple relay protection (500-800A) |
| 0.5/10P/10P/10P | Metering + Protection 1 + Protection 2 + Protection 3 | Standard metering with triple standard protection | General metering and triple relay protection (1000-1250A) |
| 10P/10P/10P/10P | Protection 1 + Protection 2 + Protection 3 + Protection 4 | Quad protection functions | Multiple protection relay applications (1500-1600A) |
| Accuracy Classes Combination | Application Scenario | Typical Current Range |
|---|---|---|
| 0.2/0.2/10P/10P | Dual high-precision metering + dual protection | 50-200A (Single), 50-100A (Two-Ratio), 50-75-100A (Three-Ratio) |
| 0.2/0.5/10P/10P | High-precision + standard metering + dual protection | 300-400A (Single), 75-150A (Two-Ratio), 75-100-150A (Three-Ratio) |
| 0.2/10P/10P/10P | High-precision metering + triple protection | 500-800A (Single), 100-200A (Two-Ratio), 100-150-200A (Three-Ratio) |
| 0.5/10P/10P/10P | Standard metering + triple protection | 1000-1250A (Single), 150-300A (Two-Ratio), 150-200-300A (Three-Ratio) |
| 10P/10P/10P/10P | Quad protection functions | 1500-1600A (Single), 200-1600A (Two-Ratio), 200-1500A (Three-Ratio) |
Bepto is a leading Chinese company in electrical insulation, focused on developing advanced solutions for future power systems. We support transmission and distribution safety and growth, with long-term partners including State Grid, ABB, Schneider, Siemens, and GE. Our services reach clients in over 22 countries.
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Unwavering in our dedication to customers and delivering cutting-edge innovations,Bepto stands as your steadfast ally on the journey ahead.
