LZZW-35kv Fully Enclosed Casting Resin Current Transformer

Name: LZZW-35kv Fully Enclosed Casting Resin Current Transformer, Thomas High-Voltage CT
Brand: Daulma
SKU: LZZW-35

The LZZW-35 Current Transformer is a fully enclosed device made from casting resin, designed for use in electrical systems with a rated voltage of 35kV and a frequency of 50Hz or 60Hz. It is primarily used for energy metering, current measurement, and relay protection. Built to meet IEC185 and GB1208-2006 standards, this transformer ensures reliable […]

Products | Detials

Type Designation for LZZW-35 Current Transformer

Key Features of LZZW-35 Current Transformers

L: Current Transformer.
Z: Post type.
Z: Resin-cast insulation.
W: Outdoor post-type design.
35: Rated for 35kV systems.

The LZZW-35 is designed for outdoor medium-voltage applications, offering durable construction, precise measurement, and reliable system protection.

Service Conditions of LZZW-35 CT

Installation Location: Outdoor, free from severe pollution and corrosive environments.
Ambient Temperature: Operating range: -25°C to +40°C. Optional: Can be extended to -40°C upon request.
Altitude: Not exceeding 1000m.
Atmospheric Conditions: Pollution class: IV. Should not include gases, steam, chemical deposits, dust, or explosive substances that significantly impact insulation.
Vibration and Shock: Installation sites must be free from severe vibrations and shocks.

Construction of LZZW-35 Current Transformer

Technical Data for LZZW-35 Current Transformer

Rated Insulation Level: 40.5/95/185kV – ensuring robust insulation for reliable performance in medium-voltage systems.
Rated Secondary Current: 5A – suitable for standard measurement and protection applications.
Partial Discharge Level: Complies with the GB1208-2006 & IEC185 Current Transformer standard.
ated Primary Current: Refer to the technical specification table for detailed values, accuracy class combinations, rated output, and dynamic/thermal current capabilities.

Rated Primary Current (A)	Accuracy Class Combination	Rated Output (VA)					Short-Time Thermal Current (ka/s)	Rated Dynamic Current (kA)
Rated Primary Current (A)	Accuracy Class Combination	0.2s	0.2	0.5	10p10	10p15	Short-Time Thermal Current (ka/s)	Rated Dynamic Current (kA)
5-100	0.2 0.2S 0.5 0.5S 10P10 10P15	10	10	15	15	10	13.5	34
150							18	45
200							27	67.5
300							30	75
400							36	90
500							40	1001In
600							N/A	N/A
750-1000							N/A	N/A

Notes:

Custom LZZW-35 current transformers with tailored accuracy classes, primary current ratings, and outputs are available for medium- and high-voltage applications.
Use only one specified primary current rating at a time for optimal accuracy and reliability.
Contact us for customized solutions designed for energy metering, current measurement, and relay protection

Outline and Dimensions

LZZW-35kv Fully Enclosed Casting Resin Current Transformer outline

Attention:

Ensure that the transformer specifications align with your system’s operational parameters.
Installation should be performed by qualified personnel to guarantee safety and reliability.
If operating in severe conditions (e.g., high altitudes, extreme temperatures, or high pollution areas), additional protective measures or custom designs may be required.

Ordering Guidelines and Special Requirements

This page provides an overview of the LZZW-35 current transformer, including its technical specifications, rated primary and secondary currents, accuracy classes, and service conditions. Before placing an order, please review the required specifications and confirm them with our technical team to ensure compatibility with your system requirements.

For special requirements, such as extended operating temperature ranges, custom primary current ratings, specific accuracy levels, or unique designs for challenging environments, please contact our customer service or technical team. We are committed to delivering customized solutions to meet your precise needs.