Unwavering in our dedication to customers and delivering cutting-edge innovations,Bepto stands as your steadfast ally on the journey ahead.
LJW-10/35 LJWD-10/35 Current Transformer Indoor Outdoor Dual-Use Oil-Immersed CT: 10kV/35kV, 5-600A primary current, 0.2/0.5/1/3D accuracy class, steel tank oil-immersed, 75× thermal stability, 187.5× dynamic stability, 40.5/95/185kV insulation, 10-50VA burden, 5A secondary, 50Hz, GB1208 IEC60044-1.
Advanced LJW-10/35 & LJWD-10/35 Dual-Use Current Transformer: Indoor outdoor dual-use steel tank oil-immersed single-phase self-cooling 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 -25°C to +40°C, altitude capability up to 4000 meters, rated primary current range 5-600A, LJW series for metering-only applications (0.2 class, 10-50VA burden) and LJWD series for metering plus relay protection (0.2/0.5/1/3D class, 15-50VA burden), exceptional thermal stability 75 times rated current and dynamic stability 187.5 times ensuring superior short-circuit withstand capability, allows continuous operation at 120% rated current.
Superior Dual-Use Design and Oil-Immersed Technology: LJW-10/35 & LJWD-10/35 feature versatile indoor outdoor dual-use installation with robust steel tank oil-immersed construction ensuring reliable operation in harsh environments, advanced vacuum oil-filtering and vacuum oil-filling process ensuring superior insulation performance, 10kV level with oil valve and rain/snow protective cover, 35kV level with oil storage pot and wax diaphragm preventing air contact and reducing oil oxidation, available in single-ratio single-secondary, single-ratio dual-secondary, dual-ratio single-secondary, and dual-ratio dual-secondary configurations, suitable for 10kV/35kV switchgear, power distribution systems, substations, outdoor installations, high-altitude applications, and environments requiring versatile indoor outdoor dual-use capability with oil-immersed reliability.
| LJW-10/35 & LJWD-10/35 Current Transformer Specifications | Parameter | Unit |
|---|---|---|
| Brand | Bepto Insulation Systems | – |
| Model Number | LJW-10/35 & LJWD-10/35 | – |
| Category | Switchgear & HV CT (High Voltage Current Transformer) | – |
| Product Type | 10kV/35kV Indoor Outdoor Dual-Use Steel Tank Oil-Immersed Single-Phase Self-Cooling Current Transformer with 5-600A Range, 75× Thermal Stability, 187.5× Dynamic Stability, 0.2/0.5/1/3D Accuracy Class, 40.5/95/185kV Insulation for Metering & Relay Protection | – |
| Core Technology | Indoor Outdoor Dual-Use Design + Steel Tank Oil-Immersed Single-Phase Self-Cooling Type + 10kV/35kV Dual Voltage Design + 75× Thermal Stability + 187.5× Dynamic Stability + 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 -25°C to +40°C + Altitude Capability up to 4000m + Rated Primary Current Range 5-600A + Flexible Accuracy Classes (0.2/0.5/1/3D) + Burden Capacity 10-50VA + Continuous Operation at 120% Rated Current + Vacuum Oil-Filtering and Vacuum Oil-Filling Process + Superior Insulation Performance + Oil Valve with Rain/Snow Protective Cover (10kV) + Oil Storage Pot with Wax Diaphragm (35kV) + Multiple Ratio and Secondary Configurations + Reliable Short-Circuit Withstand Capability | – |
| Power (Voltage) | 10kV / 35kV | – |
| Rated Voltage | 10kV / 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 | 5-600 | A |
| Ambient Temperature | -25°C to +40°C | °C |
| Altitude Capability | Up to 4000 | meters |
| Structure Type | Indoor Outdoor Dual-Use Steel Tank Oil-Immersed Single-Phase Self-Cooling | – |
| Installation Type | Indoor Outdoor Dual-Use | – |
| Phase | Single Phase | – |
| Thermal Stability | 75 times rated current | – |
| Dynamic Stability | 187.5 times rated current | – |
| Continuous Operation Capability | 120% rated current | – |
| Standards Compliance | GB1208 and IEC60044-1 | – |
| FOB Port | Ningbo/Shanghai | – |
| Terms of Payment | Western Union, T/T, Paypal | – |
| Steel Tank Oil-Immersed | Yes (Steel Tank Oil-Immersed Single-Phase Self-Cooling Type) | – |
| 10kV/35kV Dual Voltage | Yes (10kV and 35kV Voltage Classes) | – |
| Indoor Outdoor Dual-Use | Yes (Versatile Indoor Outdoor Dual-Use Installation) | – |
| 75× Thermal Stability | Yes (75 Times Rated Current Thermal Stability) | – |
| 187.5× Dynamic Stability | Yes (187.5 Times Rated Current Dynamic Stability) | – |
| Vacuum Oil-Filling Process | Yes (Advanced Vacuum Oil-Filtering and Vacuum Oil-Filling) | – |
| High Altitude Capability | Yes (Up to 4000 meters Altitude) | – |
| 120% Continuous Operation | Yes (Allows Continuous Operation at 120% Rated Current) | – |
| 50Hz or 60Hz | Yes (Rated Frequency 50Hz or 60Hz) | – |
| 10kV/35kV Rated Voltage | Yes (Rated Voltage 10kV or 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) | – |
| -25°C to +40°C Ambient | Yes (Ambient Temperature -25°C to +40°C) | – |
| 5-600A Primary Range | Yes (Rated Primary Current Range 5-600A) | – |
| 0.2 Accuracy Class | Yes (0.2 Metering Accuracy Class Available) | – |
| 0.5 Accuracy Class | Yes (0.5 Relay Protection Accuracy Class Available) | – |
| 1 Accuracy Class | Yes (1 Relay Protection Accuracy Class Available) | – |
| 3D Accuracy Class | Yes (3D Relay Protection Accuracy Class Available) | – |
| 10-50VA Burden Capacity | Yes (Burden Capacity 10-50VA) | – |
| Type | Voltage class (kA) | Rated current ratio (A) | Measurement class 0.2, capacity (VA) | Capacity for Class 1 relay protection |
|---|---|---|---|---|
| LJW-10 | 10 | 5–400 / 5 | 10–15 | Without relay protection or monitoring |
| LJW-35 | 35 | 5–600 / 5 | 30–50 | Without relay protection or monitoring |
| LJWD-10 | 10 | 5–400 / 5 | 10–15 | 15–30 |
| LJWD-35 | 35 | 5–600 / 5 | 30–50 | 30–50 |
| Model | Voltage | Current Range | Metering | Protection | Key Advantage | Typical Application |
|---|---|---|---|---|---|---|
| LJW-10 | 10kV | 5-400A | 0.2 class, 10-15VA | No | High-precision metering for 10kV systems | 10kV metering-only applications |
| LJW-35 | 35kV | 5-600A | 0.2 class, 30-50VA | No | High-precision metering for 35kV systems | 35kV metering-only applications |
| LJWD-10 | 10kV | 5-400A | 0.2 class, 10-15VA | 0.5/1/3D class, 15-30VA | Metering + protection for 10kV systems | 10kV metering + relay protection applications |
| LJWD-35 | 35kV | 5-600A | 0.2 class, 30-50VA | 0.5/1/3D class, 30-50VA | Metering + protection for 35kV systems | 35kV metering + relay protection applications |
| Configuration Type | Description | Typical Application |
|---|---|---|
| Single-Ratio Single-Secondary | One primary current ratio, one secondary winding | Simple metering or protection applications |
| Single-Ratio Dual-Secondary | One primary current ratio, two secondary windings | Simultaneous metering and protection with single ratio |
| Dual-Ratio Single-Secondary | Two primary current ratios, one secondary winding | Flexible current range with single function |
| Dual-Ratio Dual-Secondary | Two primary current ratios, two secondary windings | Maximum flexibility for metering and protection |
| Accuracy Class | Application | Model Availability | Typical Current Range |
|---|---|---|---|
| 0.2 | High-precision metering, revenue billing, energy measurement | LJW-10, LJW-35, LJWD-10, LJWD-35 | 5-600A |
| 0.5 | Relay protection, overcurrent protection | LJWD-10, LJWD-35 | 5-600A |
| 1 | General relay protection, monitoring | LJWD-10, LJWD-35 | 5-600A |
| 3D | Differential protection, special protection applications | LJWD-10, LJWD-35 | 5-600A |
| Burden Capacity | Voltage Class | Model | Application |
|---|---|---|---|
| 10-15VA | 10kV | LJW-10 (metering), LJWD-10 (metering) | 10kV metering applications |
| 15-30VA | 10kV | LJWD-10 (protection) | 10kV relay protection applications |
| 30-50VA | 35kV | LJW-35 (metering), LJWD-35 (metering & protection) | 35kV metering and protection applications |
| Stability Type | Value | Description | Application |
|---|---|---|---|
| Thermal Stability | 75 × In | 75 times rated current (1s) | Superior short-circuit thermal withstand capability |
| Dynamic Stability | 187.5 × In | 187.5 times rated current | Maximum short-circuit dynamic withstand capability |
| Rated Primary Current (A) | 75× Thermal Current (kA) | 187.5× Dynamic Current (kA) |
|---|---|---|
| 5 | 0.375 | 0.9375 |
| 10 | 0.75 | 1.875 |
| 20 | 1.5 | 3.75 |
| 50 | 3.75 | 9.375 |
| 100 | 7.5 | 18.75 |
| 200 | 15 | 37.5 |
| 300 | 22.5 | 56.25 |
| 400 | 30 | 75 |
| 500 | 37.5 | 93.75 |
| 600 | 45 | 112.5 |
| Environmental Factor | Specification | Application Advantage |
|---|---|---|
| Ambient Temperature | -25°C to +40°C | Wide temperature range for harsh climates |
| Altitude Capability | Up to 4000 meters | High-altitude applications without derating |
| Indoor Outdoor Dual-Use | Versatile installation | Flexible deployment for indoor or outdoor environments |
| Continuous Operation at 120% Rated Current | Long-term overload capability | Reliable operation under overload conditions |
| Oil-Immersed Feature | Description | Benefit |
|---|---|---|
| Vacuum Oil-Filtering | Advanced vacuum oil-filtering process | Superior oil purity and insulation performance |
| Vacuum Oil-Filling | Vacuum oil-filling technology | Eliminates air bubbles ensuring reliable insulation |
| Oil Valve with Rain/Snow Cover (10kV) | Oil valve with protective cover | Prevents water and snow ingress |
| Oil Storage Pot with Wax Diaphragm (35kV) | Oil storage pot with wax diaphragm | Prevents air contact reducing oil oxidation |
| Steel Tank Construction | Robust steel tank | Durable protection for outdoor installations |
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.
