Unwavering in our dedication to customers and delivering cutting-edge innovations,Bepto stands as your steadfast ally on the journey ahead.
LCWB5-66kV Current Transformer High Voltage CT: Dual-ratio 2×25-2×1000/5A, 0.2S/0.5/5P/10P accuracy class, fully sealed porcelain tank oil-paper insulated chain structure, three or four secondary windings, 72.5/140/325kV insulation level, 2.7-50kA thermal current, 6.8-125kA dynamic current, 50Hz, ideal for 66kV power systems.
Advanced LCWB5-66kV High Voltage Current Transformer: Fully sealed porcelain tank oil-paper insulated chain structure CT designed for 50Hz and 66kV power systems, rated insulation level 72.5/140/325kV, suitable for altitudes below 1000m and ambient temperature -30°C to +40°C, dual-ratio configuration with primary winding divided into two sections enabling two current ratios (2×25-2×1000/5A) through different terminal connections on oil conservator, three or four secondary windings providing flexible accuracy class combinations including 0.2S/0.5/5P/10P, rated short-time withstand current 2.7-50kA and dynamic stability current 6.8-125kA ensuring superior short-circuit protection, main body installed in porcelain tank and fixed on base, secondary outlet lines led out by small porcelain bushings, metal expander installed on oil conservator.
Superior Oil-Paper Insulated Design and Dual-Ratio Flexibility: LCWB5-66kV features robust fully sealed porcelain tank construction with proven oil-paper insulation technology ensuring reliable high voltage operation, innovative dual-ratio design allowing two current ratios without transformer replacement through primary winding reconnection reducing inventory costs, chain structure providing excellent mechanical strength and thermal performance, suitable for 66kV substations, high voltage switchgear, transmission systems, power distribution networks, industrial high voltage facilities, and applications requiring precise current and energy measurement from 25A to 1000A with oil-paper insulated reliability and dual-ratio operational flexibility for 66kV high voltage power systems.
| No. | Item | No. | Item | No. | Item | No. | Item |
|---|---|---|---|---|---|---|---|
| 1 | Cable Outlet Box | 2 | Cable Clamp | 3 | Earthing Bolt | 4 | Inspection Window |
| 5 | Nameplate | 6 | Base | 7 | Porcelain Bushing | 8 | Oil Sump |
| 9 | Main Terminal | 10 | Connection Plate | 11 | Oil Level Sight Glass | 12 | Conservator |
| 13 | Oil Valve | 14 | Lifting Hook |
| LCWB5-66kV Current Transformer Specifications | Parameter | Unit |
|---|---|---|
| Brand | Bepto Insulation Systems | – |
| Model Number | LCWB5-66kV Series | – |
| Category | Switchgear & HV CT (High Voltage Current Transformer) | – |
| Product Type | 66kV Fully Sealed Porcelain Tank Oil-Paper Insulated Chain Structure Current Transformer with Dual-Ratio 2×25-2×1000/5A, Three or Four Secondary Windings, 0.2S/0.5/5P/10P Accuracy Class, 72.5/140/325kV Insulation for Current & Energy Measurement and Relay Protection | – |
| Core Technology | Fully Sealed Porcelain Tank Oil-Paper Insulated Chain Structure + 66kV High Voltage Design + Dual-Ratio Configuration (Primary Winding Divided into Two Sections) + Three or Four Secondary Windings + Rated Insulation Level 72.5/140/325kV + Rated Frequency 50Hz + Rated Current Ratio 2×25-2×1000/5A + Ambient Temperature -30°C to +40°C + Altitude Below 1000m + Flexible Accuracy Classes (0.2S, 0.2, 0.5, 5P, 10P) + Rated Short-Time Withstand Current 2.7-50kA + Dynamic Stability Current 6.8-125kA + Main Body Installed in Porcelain Tank Fixed on Base + Secondary Outlet Lines Led Out by Small Porcelain Bushings + Metal Expander on Oil Conservator + Superior Short-Circuit Protection + Proven Oil-Paper Insulation Technology + Robust Porcelain Tank Construction | – |
| Rated Voltage | 66 | kV |
| Rated Current Ratio | 2×25~2×750/5<br>2×750/5, 2×400/5<br>2×600/5, 2×300/5<br>2×1000/5, 2×500/5 | A |
| Rated Frequency | 50 | Hz |
| Accuracy Classes | 5P, 10P, 0.5, 0.2, 0.2S | – |
| Rated Short-Time Withstand Current | 2.7–50 | kA |
| Dynamic Stability Current | 6.8–125 | kA |
| Insulation Level | 72.5/140/325 | kV |
| Oil Weight | 100 | kg |
| Total Weight | 440 | kg |
| Ambient Temperature | -30°C to +40°C | °C |
| Altitude | Below 1000m | m |
| Structure Type | Fully Sealed Porcelain Tank Oil-Paper Insulated Chain Structure | – |
| Secondary Windings | Three or Four Windings | – |
| Voltage Level | High Voltage (66kV) | – |
| Installation Type | Outdoor/Indoor | – |
| Phase | Single Phase | – |
| FOB Port | Ningbo/Shanghai | – |
| Terms of Payment | Western Union, T/T, Paypal | – |
| 66kV High Voltage | Yes (66kV Rated Voltage) | – |
| Oil-Paper Insulated | Yes (Fully Sealed Oil-Paper Insulation) | – |
| Porcelain Tank | Yes (Porcelain Tank Construction) | – |
| Chain Structure | Yes (Chain Structure Design) | – |
| Dual-Ratio Configuration | Yes (Primary Winding Divided into Two Sections) | – |
| Three/Four Secondary Windings | Yes (Three or Four Secondary Windings) | – |
| 50Hz | Yes (Rated Frequency 50Hz) | – |
| 66kV Rated Voltage | Yes (Rated Voltage 66kV) | – |
| 72.5/140/325kV Insulation | Yes (Rated Insulation Level 72.5/140/325kV) | – |
| -30°C to +40°C Ambient | Yes (Ambient Temperature -30°C to +40°C) | – |
| Below 1000m Altitude | Yes (Suitable for Altitudes Below 1000m) | – |
| 2×25-2×1000/5A Ratio | Yes (Dual-Ratio 2×25-2×1000/5A) | – |
| 0.2S Accuracy Class | Yes (0.2S Metering Accuracy Class Available) | – |
| 0.2 Accuracy Class | Yes (0.2 Metering Accuracy Class Available) | – |
| 0.5 Accuracy Class | Yes (0.5 Metering Accuracy Class Available) | – |
| 5P Protection Class | Yes (5P Protection Accuracy Class Available) | – |
| 10P Protection Class | Yes (10P Protection Accuracy Class Available) | – |
| 2.7-50kA Thermal Current | Yes (Rated Short-Time Withstand Current 2.7-50kA) | – |
| 6.8-125kA Dynamic Current | Yes (Dynamic Stability Current 6.8-125kA) | – |
| Metal Expander | Yes (Metal Expander on Oil Conservator) | – |
| Small Porcelain Bushings | Yes (Secondary Outlet Lines Led Out by Small Porcelain Bushings) | – |
| Dual-Ratio Configuration | Primary Current Ratio Option 1 | Primary Current Ratio Option 2 | Secondary Current | Flexibility Advantage |
|---|---|---|---|---|
| 2×25~2×750/5 | 2×25/5 (50/5) | 2×750/5 (1500/5) | 5A | Wide range flexibility from 50A to 1500A |
| 2×750/5, 2×400/5 | 2×750/5 (1500/5) | 2×400/5 (800/5) | 5A | High current flexibility 800A to 1500A |
| 2×600/5, 2×300/5 | 2×600/5 (1200/5) | 2×300/5 (600/5) | 5A | Medium-high current flexibility 600A to 1200A |
| 2×1000/5, 2×500/5 | 2×1000/5 (2000/5) | 2×500/5 (1000/5) | 5A | Very high current flexibility 1000A to 2000A |
| Current Ratio Range | Primary Current Range | Application | Typical Use Case |
|---|---|---|---|
| 2×25-2×750/5 | 50-1500A | Wide range applications | Versatile distribution and transmission systems |
| 2×750/5, 2×400/5 | 800-1500A | High current applications | Heavy load transmission lines |
| 2×600/5, 2×300/5 | 600-1200A | Medium-high current applications | Industrial substations |
| 2×1000/5, 2×500/5 | 1000-2000A | Very high current applications | Main transmission feeders |
| Accuracy Class | Application | Typical Use |
|---|---|---|
| 0.2S | High-precision revenue metering | Billing and energy trading |
| 0.2 | High-precision metering | Accurate energy measurement |
| 0.5 | Standard metering | General energy measurement and monitoring |
| 5P | Protection applications | Relay protection with 5% accuracy limit |
| 10P | Protection applications | Relay protection with 10% accuracy limit |
| Winding Configuration | Number of Secondary Windings | Typical Accuracy Combination | Application |
|---|---|---|---|
| Three Windings | 3 | 0.2S + 0.5 + 5P | High-precision metering + standard metering + protection |
| Four Windings | 4 | 0.2S + 0.5 + 5P + 10P | Dual metering + dual protection for maximum flexibility |
| Current Ratio | Short-Time Withstand Current (kA) | Dynamic Stability Current (kA) | Thermal/Dynamic Ratio |
|---|---|---|---|
| 2×25-2×750/5 | 2.7-50 | 6.8-125 | ~2.5:1 |
| Low Range (50A) | 2.7 | 6.8 | 2.52:1 |
| High Range (1500A) | 50 | 125 | 2.5:1 |
| Insulation Level | Lightning Impulse Withstand | Power Frequency Withstand | Application Environment |
|---|---|---|---|
| 72.5kV | Rated voltage level | Short-duration power frequency | Standard 66kV systems |
| 140kV | Lightning impulse | Medium-duration withstand | Lightning protection requirements |
| 325kV | Full lightning impulse | Full insulation withstand | Maximum insulation protection |
| Oil-Paper Insulation Feature | Description | Benefit |
|---|---|---|
| Proven Technology | Decades of reliable performance | Time-tested reliability for high voltage applications |
| Superior Dielectric Strength | Excellent insulation properties | High voltage withstand capability |
| Self-Healing Properties | Oil-paper combination provides self-healing | Enhanced reliability and longevity |
| Thermal Stability | Excellent heat dissipation | Stable operation under high loads |
| Fully Sealed Design | Hermetically sealed porcelain tank | Protection from environmental contamination |
| Metal Expander | Compensates for oil volume changes | Maintains internal pressure stability |
| Porcelain Tank Chain Structure Feature | Description | Benefit |
|---|---|---|
| Porcelain Tank Construction | Robust ceramic housing | Excellent mechanical strength and weather resistance |
| Chain Structure Design | Series-connected core arrangement | Optimal magnetic circuit design for high accuracy |
| Fully Sealed | Hermetically sealed construction | Protection from moisture and contamination |
| Fixed on Base | Secure mounting on base | Stable installation and vibration resistance |
| Small Porcelain Bushings | Secondary outlets through small bushings | Compact design with reliable insulation |
| Oil Conservator with Metal Expander | Expansion tank with metal compensator | Accommodates thermal expansion of oil |
| Application Scenario | Typical Current Range | Key Advantage | Typical Installation |
|---|---|---|---|
| 66kV Substations | 50-2000A | Dual-ratio flexibility with oil-paper reliability | Transmission and distribution substations |
| High Voltage Switchgear | 600-2000A | Proven oil-paper insulation for high voltage | 66kV switchgear installations |
| Transmission Systems | 800-2000A | High thermal and dynamic current capacity | Main transmission lines |
| Power Distribution Networks | 50-1500A | Wide current range with three/four windings | Urban and industrial distribution |
| Industrial High Voltage Facilities | 600-1500A | Robust porcelain tank construction | Heavy industrial power systems |
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.
Bepto focuses on the global market and provides our clients with products suitable for the local market:
Unwavering in our dedication to customers and delivering cutting-edge innovations,Bepto stands as your steadfast ally on the journey ahead.
