Zhejiang Donghua Electrical Appliance Co., Ltd.
Leave Your Message
Products Categories
Featured Products
Dual Output Switching Power Supply

Dual Output Switching Power Supply
Single Output Waterproof Power Supply

Single Output Waterproof Power Supply
DR Single Output Industrial DIN Rail Power Supply

DR Single Output Industrial DIN Rail Power Supply
HSP Series Single Output Switching Power Supply with PFC Function

HSP Series Single Output Switching Power Supply with PFC Function
S Single Output Switching Power Supply

S Single Output Switching Power Supply
HSCP Series UPS Battery Charger Type Switching Power Supply

HSCP Series UPS Battery Charger Type Switching Power Supply
HS HRs single output switching Power supply

HS HRs single output switching Power supply
HD11G Series (Special for Photovoltaic Applications)

HD11G Series (Special for Photovoltaic Applications)
HHT10 Series Bar-type Vertical Fuse Switch Disconnector

HHT10 Series Bar-type Vertical Fuse Switch Disconnector
LMK1(BH)-0.66 current transformer

LMK1(BH)-0.66 current transformer
0102030405
LZZBW-35B.jpg

China LZZBW-35B Current Transformer Suppliers - 35kV Power System Measurement & Protection Factory

The LZZBW-35B current transformer is designed for power systems operating at a rated frequency of 50Hz or 60Hz and a rated voltage of 35kV. This essential device is utilized for electric energy measurement, current measurement, and relay protection, making it ideal for various applications in the energy sector. Manufactured in China, our current transformers adhere to the implementation standards GB20840.1-2010 and GB20840.2-2014, ensuring high reliability and performance. As a leading supplier and factory of current transformers, we are committed to providing top-quality products to meet the needs of our clients in the electrical industry
    Preview Data Contact us
    Product Detail

    Model and Its Meaning

    LZZBW-35B Current Transformer Model Meaning

    Summarize

    ⚡ Unify input specifications for measurement and protection devices to simplify equipment design

    Currents in power systems vary greatly, ranging from tens of amperes to tens of thousands of amperes. Current transformers convert high primary currents into standard, lower secondary currents (typically 5A or 1A) using a fixed ratio (such as 1000/5A or 600/1A). This eliminates the need for individual design of measuring instruments, relay protection devices, and other equipment based on different primary current specifications. Instead, they simply adapt to the standard 5A or 1A input. This significantly reduces equipment R&D, production, and selection costs, while improving equipment versatility and interchangeability.

    Normal Service Condition

    • Installation place: Outdoor
    • Ambient temperature: Maximum temperature 40℃  |  Minimum temperature -25℃  |  Average daily temperature does not exceed 30℃
    • Atmospheric conditions: No serious pollution in the atmosphere

    Technical Parameter

    LZZBW-35B1 Current Transformer Technical Parameter Table

    Product
    Model

    Rated Primary
    Current

    Accuracy Level
    Combination

    Rated
    Output

    Rated Short-Term
    Thermal Current

    Rated Dynamic
    Stability Current

    LZZBW-35B

    20

    0.2/10P10
    0.5/10P10
    0.2/10P15
    0.5/10P15

    15/40
    20/40
    15/30
    20/30

    3/1

    7.5

    30

    4.5/1

    11.25

    40

    6/1

    15

    50

    7.5/1

    187.5

    75

    11.25/1

    28

    100

    15/1

    37.5

    150

    22.5/1

    57

    200

    31.5/1

    80

    300

    31.5/4

    400

    0.2/10P10
    0.5/10P10
    0.2/10P15
    0.5/10P15

    15/40
    20/40
    15/30
    20/30

    31.5/4

    80

    500

    600

    750

    800

    0.2/10P10
    0.2/10P15
    0.5/10P10
    0.5/10P15

    30/50
    20/40
    50/50
    50/40

    1000

    1200

    1250

    1500

    0.2/10P10
    0.2/10P15
    0.5/10P10
    0.5/10P15

    50/50

    40/4

    100

    2000

    2500
    LZZBW-35B2 Current Transformer Technical Parameter Table

    Product
    Model

    Rated Primary
    Current

    Accuracy Level
    Combination

    Rated
    Output

    Rated Short-Term
    Thermal Current

    Rated Dynamic
    Stability Current

    LZZBW-35B2

    20

    0.2/0.5/10P10/10P10
    0.2/0.5/10P15/10P15

    15/40
    20/40
    15/30
    20/30

    3/1

    7.5

    30

    4.5/1

    11.25

    40

    6/1

    15

    50

    7.5/1

    187.5

    75

    11.25/1

    28

    100

    15/1

    37.5

    150

    22.5/1

    57

    200

    31.5/1

    80

    300

    31.5/4

    400

    500

    600

    750

    800

    1000

    0.2/0.5/10P
    10/10P10
    0.2/0.5/10P
    15/10P15

    30/50/50/50
    30/50/40/40

    31.5/4

    80

    1200

    1250

    1500

    0.2/0.5/10P
    10/10P10
    0.2/0.5/10P
    15/10P15

    50/50/50/50

    Apr-40

    100

    2000

    2500
    ℹ️ Rated secondary current: 5A or 1A  |  Rated insulation level: 40.5 / 95 / 185 kV

    Structure and Characteristics

    This series of current transformers is an outdoor type, epoxy resin casting fully enclosed pillar structure, with excellent insulation performance and moisture-proof and decontamination capabilities. The series of products have compact structure, high performance and high parameters. The primary P1 and P2 terminals are drawn from the top of the product, and the secondary terminal is drawn from the closed outlet box in the lower part of the product.

    Frequently Asked Questions (FAQ)

    Q What is the LZZBW-35B current transformer used for?
    The LZZBW-35B current transformer is used to convert high primary currents in power systems into standard lower secondary currents (5A or 1A). This standardized output simplifies the design of measurement instruments and relay protection devices, reducing the need for custom equipment tailored to varying primary current levels.
    Q What is the rated insulation level of the LZZBW-35B series?
    The rated insulation level of the LZZBW-35B series is 40.5 / 95 / 185 kV, ensuring reliable performance and safety in high-voltage outdoor power system environments.
    Q What are the ambient temperature requirements for the LZZBW-35B?
    The LZZBW-35B is designed to operate in environments where the maximum ambient temperature does not exceed 40℃, the minimum temperature is no lower than -25℃, and the average daily temperature does not exceed 30℃. It is intended for outdoor installation only.
    Q What is the difference between LZZBW-35B1 and LZZBW-35B2?
    The LZZBW-35B1 supports dual-winding accuracy level combinations (e.g., 0.2/10P10, 0.5/10P15), while the LZZBW-35B2 supports four-winding accuracy level combinations (e.g., 0.2/0.5/10P10/10P10), providing more measurement and protection cores in a single unit for more complex power system applications.
    Q What primary current ratings are available for the LZZBW-35B series?
    The LZZBW-35B series covers a wide range of rated primary currents, from as low as 20A up to 2500A, making it suitable for diverse power system configurations and load requirements.
    Q What structural features make the LZZBW-35B suitable for outdoor use?
    The LZZBW-35B features an epoxy resin casting fully enclosed pillar structure, which provides excellent insulation performance along with strong moisture-proof and decontamination capabilities. Its compact design, high performance parameters, and sealed secondary terminal outlet box make it well-suited for demanding outdoor environments.