Unwavering in our dedication to customers and delivering cutting-edge innovations,Bepto stands as your steadfast ally on the journey ahead.
LZZBJ9-12/150b/2 & LZZBJ9-12/150b/4 Current Transformer 12kV Indoor CT: 5-1250A primary current, 0.2S/0.5/10P10/10P15/5P accuracy class, 150×In thermal capacity for 20-100A, 375×In dynamic current, 12/42/75kV insulation level, dual/quad winding, 10-30VA burden, 5A/1A secondary, 50/60Hz, GB1208 IEC60044-1.
Advanced LZZBJ9-12 Series Current Transformer: Indoor single-phase epoxy resin casting type CT conforming to GB1208 and IEC60044-1 standards, rated insulation level 12/42/75kV, rated frequency 50Hz or 60Hz, rated secondary current 5A or 1A, ambient temperature -5°C to +40°C, rated primary current range 5-1250A providing ultra-wide current coverage, flexible winding configurations including LZZBJ9-12/150b/2 (dual winding) and LZZBJ9-12/150b/4 (quad winding) enabling versatile metering and protection applications, flexible accuracy class combinations including 0.2S/10P, 0.5/10P, 0.2S/0.2/5P, and 0.5/5P10/10P20 with burden capacity 10-30VA, exceptional thermal performance with 150×In (1s thermal current) for 20-100A range ensuring superior short-circuit withstand capability, 375×In rated dynamic current providing maximum safety margin.
Superior Winding Flexibility and Exceptional Thermal Capacity: LZZBJ9-12 series features dual winding (/150b/2) and quad winding (/150b/4) configurations enabling diverse metering and protection requirements, exceptional 150 times rated current thermal capacity for low current range (20-100A) ensuring outstanding short-circuit protection, rated dynamic current up to 375×In for 20-100A range providing maximum safety margin, 1s thermal current 0.5-100kA covering comprehensive current applications from 5A to 1250A, suitable for 12kV switchgear, power distribution systems, substations, industrial power networks, energy management systems, and applications requiring flexible winding configurations with exceptional thermal withstand capability.
| LZZBJ9-12 Series Current Transformer Specifications | Parameter | Unit |
|---|---|---|
| Brand | Bepto Insulation Systems | – |
| Model Number | LZZBJ9-12/150b/2 & LZZBJ9-12/150b/4 | – |
| Category | Switchgear & HV CT (High Voltage Current Transformer) | – |
| Product Type | 12kV Indoor Single-Phase Epoxy Resin Casting Type Current Transformer with 5-1250A Range, 150×In Thermal Capacity, 375×In Dynamic Current, Dual Winding (/150b/2) and Quad Winding (/150b/4) Configurations, 0.2S/0.5/10P/5P Accuracy Class, 12/42/75kV Insulation for Metering & Protection | – |
| Core Technology | Indoor Single-Phase Epoxy Resin Casting Type + 12kV Design + Exceptional 150×In Thermal Capacity for 20-100A Range + Superior 375×In Dynamic Current for 20-100A Range + Flexible Winding Configurations (Dual Winding /150b/2 and Quad Winding /150b/4) + GB1208 and IEC60044-1 Standards Compliant + Rated Insulation Level 12/42/75kV + Rated Frequency 50Hz or 60Hz + Rated Secondary Current 5A or 1A + Ambient Temperature -5°C to +40°C + Rated Primary Current Range 5-1250A + Ultra-Wide Current Coverage + Flexible Accuracy Classes (0.2S/10P, 0.5/10P, 0.2S/0.2/5P, 0.5/5P10/10P20) + Burden Capacity 10-30VA + 1s Thermal Current 0.5-100kA + Rated Dynamic Current 1.25-160kA + Versatile Metering and Protection Applications + Superior Short-Circuit Withstand Capability + Maximum Safety Margin | – |
| Power (Voltage) | 12kV | – |
| Rated Voltage | 12kV | – |
| Rated Insulation Level | 12/42/75 | kV |
| Rated Frequency | 50Hz or 60Hz | Hz |
| Rated Secondary Current | 5A or 1A | A |
| Rated Primary Current Range | 5-1250 | A |
| Ambient Temperature | -5°C to +40°C | °C |
| Structure Type | Indoor Single-Phase Epoxy Resin Casting Type | – |
| Winding Configuration | Dual Winding (/150b/2) and Quad Winding (/150b/4) | – |
| 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) | – |
| 12kV Design | Yes (12kV Rated Voltage) | – |
| 150×In Thermal Capacity | Yes (150×In Thermal Current for 20-100A Range) | – |
| 375×In Dynamic Current | Yes (375×In Dynamic Current for 20-100A Range) | – |
| Dual Winding Configuration | Yes (/150b/2 Design with Two Windings) | – |
| Quad Winding Configuration | Yes (/150b/4 Design with Four Windings) | – |
| Exceptional Thermal Performance | Yes (Superior Short-Circuit Withstand Capability) | – |
| Maximum Safety Margin | Yes (375×In Dynamic Current for Maximum Safety) | – |
| 50Hz or 60Hz | Yes (Rated Frequency 50Hz or 60Hz) | – |
| 12kV Rated Voltage | Yes (Rated Voltage 12kV) | – |
| GB1208 Compliant | Yes (In Accordance with GB1208 Standard) | – |
| IEC60044-1 Compliant | Yes (In Accordance with IEC60044-1 Standard) | – |
| 12/42/75kV Insulation | Yes (Rated Insulation Level 12/42/75kV) | – |
| 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) | – |
| 5-1250A Primary Range | Yes (Rated Primary Current Range 5-1250A) | – |
| Ultra-Wide Current Coverage | Yes (From 5A to 1250A Primary Current) | – |
| 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) | – |
| 10P10 Protection Class | Yes (10P10 Protection Accuracy Class Available) | – |
| 10P15 Protection Class | Yes (10P15 Protection Accuracy Class Available) | – |
| 5P10 Protection Class | Yes (5P10 Protection Accuracy Class Available) | – |
| 5P20 Protection Class | Yes (5P20 Protection Accuracy Class Available) | – |
| 10-30VA Burden Capacity | Yes (Burden Capacity 10-30VA) | – |
| LZZBJ9-12/150b/2 | ||||||
| Rated primary current (A) | Accuracy classes combination | 0.2S (VA) | 0.2 (0.5) (VA) | 10P (VA) | 1s thermal current (kA) | Rated dynamic current (kA) |
| 5 | 0.2S / 10P10 | – | 10 | 15*, 20 | 0.5 | 1.25 |
| 10 | 0.2S / 10P15 | – | 10 | 15*, 20 | 1 | 2.5 |
| 15 | 0.2 / 10P10 | – | 10 | 15*, 20 | 1.5 | 3.75 |
| 20 | 0.2 / 10P15 | – | 10 | 15*, 20 | 3 | 7.5 |
| 25 | 0.5 / 10P10 | – | 10 | 15*, 20 | 3.75 | 9.3 |
| 30 | 0.5 / 10P15 | – | 10 | 15*, 20 | 4.5 | 11.2 |
| 40 | 0.5 / 10P15 | – | 10 | 15*, 20 | 6 | 15 |
| 50 | 0.5 / 10P15 | – | 10 | 15*, 20 | 7.5 | 18.7 |
| 75 | 0.5 / 10P15 | – | 10 | 15*, 20 | 10 | 25 |
| 100 | 0.5 / 10P15 | 10 | – | – | 15 | 37.5 |
| 150 | 0.5 / 10P15 | 10 | – | – | 22.5 | 56 |
| 200 | 0.5 / 10P15 | 10 | – | – | 31.5 | 80 |
| 300 | 0.5 / 10P15 | – | 10*, 15 | – | 45 | 112.5 |
| 400 | 0.5 / 10P15 | – | 10*, 15 | – | 63 | 130 |
| 500 | 0.5 / 10P15 | – | 10*, 15 | – | 63 | 130 |
| 600 | 0.5 / 10P15 | – | 15*, 30 | – | 80 | 110 |
| 800 | 0.5 / 10P15 | – | 15*, 30 | – | 80 | 110 |
| 1000 | 0.5 / 10P15 | – | 15*, 30 | – | 80 | 110 |
| 1200 | 0.5 / 10P15 | – | 15*, 30 | – | 100 | 160 |
|
Note Values marked with * apply to class combinations 0.2 / 5P10 / 10P15 and 0.5 / 5P10 / 10P20. |
||||||
| LZZBJ9-12/150b/2 | |||||||||
| Rated primary current (A) | Accuracy classes combination | 0.2S (VA) | 0.2 (VA) | 0.5 (VA) | (5)10P10 (VA) | (5)10P15 (VA) | (5)10P20 (VA) | 1s thermal current (kA) | Rated dynamic current (kA) |
| 20–100 | 0.2(S)/10P 0.5/10P |
– | 10 | 10 | 10*, 30 | 15*, 20 | 15*, 10 | 150 × In | 375 × In |
| 150, 200 | 0.2(S)/10P 0.5/10P |
– | 10 | 10 | 10*, 30 | 15*, 20 | 15*, 10 | 31.5 | 80 |
| 300, 400 | 0.2(S)/0.2/5P 0.2(S)/0.5/5P |
10 | – | – | – | – | 15 | 45 | 112.5 |
| 500 | 0.2(S)/0.5/5P20 | 10 | 10 | 15 | 15*, 30 | 20 | 15 | 63 | 130 |
| 600–800 | 0.2(S)/5P10/10P15 0.5/5P10/10P20 |
– | – | – | – | 15*, 20 | – | 63 | 130 |
| 1000–1250 | 0.5/5P10/10P20 | – | 15 | 20 | – | 15*, 20 | – | 80 | 160 |
|
Note Values marked with * apply to class combinations 0.2 / 5P10 / 10P15 and 0.5 / 5P10 / 10P20. |
|||||||||
| Rated Primary Current (A) | 150×In Thermal Current (kA) | 375×In Dynamic Current (kA) |
|---|---|---|
| 20 | 3 | 7.5 |
| 30 | 4.5 | 11.25 |
| 40 | 6 | 15 |
| 50 | 7.5 | 18.75 |
| 60 | 9 | 22.5 |
| 75 | 11.25 | 28.125 |
| 80 | 12 | 30 |
| 100 | 15 | 37.5 |
| Model | Winding Configuration | Typical Accuracy Classes | Key Advantage | Typical Application |
|---|---|---|---|---|
| LZZBJ9-12/150b/2 | Dual Winding (Two Windings) | 0.2S/10P, 0.5/10P, 0.2/10P | Simple metering + protection configuration | Standard metering and single protection relay applications (5-1200A) |
| LZZBJ9-12/150b/4 | Quad Winding (Four Windings) | 0.2(S)/10P, 0.5/10P, 0.2(S)/0.2/5P, 0.5/5P10/10P20 | Advanced metering + multiple protection configuration | High-precision metering and multiple protection relay applications (20-1250A) |
| LZZBJ9-12/150b/2 | |||
| Accuracy Classes Combination | Winding Function | Application Scenario | Typical Current Range |
| 0.2S/10P10 | High-precision metering + standard protection | Precise billing and relay protection | 5-10A |
| 0.2S/10P15 | High-precision metering + enhanced protection | Precise billing and enhanced relay protection | 10A |
| 0.2/10P10 | High-precision metering + standard protection | Accurate metering and relay protection | 15A |
| 0.2/10P15 | High-precision metering + enhanced protection | Accurate metering and enhanced relay protection | 20A |
| 0.5/10P10 | Standard metering + standard protection | General metering and relay protection | 25A |
| 0.5/10P15 | Standard metering + enhanced protection | General metering and enhanced relay protection | 30-1200A |
| LZZBJ9-12/150b/4 | |||
| Accuracy Classes Combination | Winding Function | Application Scenario | Typical Current Range |
| 0.2(S)/10P | High-precision metering + protection (multiple windings) | Precise billing and multiple relay protection | 20-200A |
| 0.5/10P | Standard metering + protection (multiple windings) | General metering and multiple relay protection | 20-200A |
| 0.2(S)/0.2/5P | Dual high-precision metering + 5P protection | Dual precise billing and 5P relay protection | 300-400A |
| 0.2(S)/0.5/5P | High-precision + standard metering + 5P protection | Mixed metering requirements and 5P relay protection | 300-400A |
| 0.2(S)/0.5/5P20 | High-precision + standard metering + 5P20 protection | Mixed metering and enhanced 5P20 relay protection | 500A |
| 0.2(S)/5P10/10P15 | High-precision metering + 5P10 + 10P15 protection | Precise billing and dual protection relay | 600-800A |
| 0.5/5P10/10P20 | Standard metering + 5P10 + 10P20 protection | General metering and dual protection relay | 600-1250A |
| Primary Current Range | Thermal Current (kA) | Dynamic Current (kA) | Model | Application |
|---|---|---|---|---|
| 5-10A | 0.5-1 | 1.25-2.5 | /150b/2 | Very low current with dual winding |
| 15-75A | 1.5-10 | 3.75-25 | /150b/2 | Low current with dual winding |
| 20-100A | 150×In (3-15kA) | 375×In (7.5-37.5kA) | /150b/4 | Low-medium current with exceptional thermal protection and quad winding |
| 100-200A | 15-31.5 | 37.5-80 | /150b/2 & /150b/4 | Medium current with dual or quad winding |
| 300-500A | 45-63 | 112.5-130 | /150b/2 & /150b/4 | Medium-high current with dual or quad winding |
| 600-1000A | 63-80 | 110-130 | /150b/2 & /150b/4 | High current with dual or quad winding |
| 1000-1250A | 80-100 | 110-160 | /150b/2 & /150b/4 | Very high current with dual or quad winding |
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.
