LA-10Q, LAZB-10kV Epoxy Resin Current Transformers Wall-Mounted
The LA-10Q and LAZB-10Q Current Transformers are epoxy resin-cast, wall-through devices designed for 10kV power systems with a rated frequency of 50Hz or 60Hz. Available in single-turn, multi-turn, and busbar configurations, they feature high creepage insulation, ensuring resistance to pollution and humidity. These transformers are ideal for energy metering, current measurement, and relay protection applications. […]
The LA-10Q and LAZB-10Q Current Transformers are epoxy resin-cast, wall-through devices designed for 10kV power systems with a rated frequency of 50Hz or 60Hz. Available in single-turn, multi-turn, and busbar configurations, they feature high creepage insulation, ensuring resistance to pollution and humidity. These transformers are ideal for energy metering, current measurement, and relay protection applications.
LA-10Q, LAZB-10Q Type designation
The Key Features and Structure of LA-10Q and LAZB-10Q Current Transformers:
- L: Represents “Current Transformer.”
- A: Denotes “Penetrating Wall Type.”
- Z: Specifies “Cast-Resin Insulated.”
- (B): Indicates “With Protective Class” (optional).
- 10: Refers to the rated voltage, indicating a 10kV power system.
- Q: Stands for “Intensive Insulation Type.”
This clear designation ensures easy identification of the product’s technical specifications and structural characteristics.
Service conditon of LA-10Q, LAZB-10Q CT
- Altitude: Suitable for installations at elevations up to 1000m.
- Ambient Temperature: Operates reliably within the range of -5°C to +40°C.
- Relative Humidity: Maximum of 85% at 20°C.
- Environment: Free from corrosive gases, chemicals, or heavy pollution that could compromise insulation performance.
- Pollution Resistance: Designed to withstand polluted and humid environments, making it ideal for regions with high humidity and contamination.
- Vibration: Stable operation, resistant to shocks and vibrations typical in power system installations.
These conditions ensure the LA-10Q and LAZB-10Q Current Transformers operate safely and reliably in diverse and challenging environments.
Construction Overview of LA-10Q, LAZB-10Q CTs
The LA-10Q and LAZB-10Q wall-mounted current transformers are designed in single-turn, multi-turn, and busbar configurations. These transformers feature a fully enclosed epoxy resin casting structure, encapsulating the primary winding, secondary winding, and core into a single unit. This design provides excellent insulation, moisture resistance, and ensures durability in harsh environments.
Primary and Secondary Windings:
- Primary Windings (P1, P2): Busbars extend from both ends of the transformer, facilitating straightforward wall-mounted installations.
- Secondary Windings (S1, S2): Exposed terminals located near the installation base allow for quick access, secure connections, and easy installation.
Core Material: Constructed from high-quality silicon steel, the core reduces energy losses while maintaining high measurement accuracy.
Compliance: The LA-10Q and LAZB-10Q transformers comply with GB1208-1997 and IEC60044-1 standards, ensuring consistent and reliable performance in power system applications.
These LA-10Q, LAZB-10Q transformers are ideal for current measurement, energy metering, and relay protection in 10kV power systems, delivering precision, insulation reliability, and durability in diverse conditions.
LA-10Q, LAZB-10Q CT Technical Parameters
The LA-10Q Current Transformer supports 5A to 400A primary currents and 5A secondary currents in 10kV power systems. It offers accuracy classes 0.2/10P15, 0.5/10P10 and more, with rated outputs of 10VA (0.2/0.5 classes) and 15VA (10P classes). Featuring a rated insulation level of 12/42/75kV, partial discharge ≤20pC, and compliance with pollution level II, it ensures reliable operation with high thermal and dynamic stability in challenging environments.
| Rated transformation ration (A) | Accuracy Class Combination | Rated Output (VA) | Rated Short-time Current (kA/1s) | Rated Dynamic Current (kA) | ||||
|---|---|---|---|---|---|---|---|---|
| 0.2S | 0.2 | 0.5 | 10P10 | 10P15 | ||||
| 5/5 | 0.2/10P10
0.2S/10P10 0.5/10P10 10P15 /10P15 |
10 | 10 | 10 | 15 | 15 | 0.5 | 0.8 |
| 10/5 | 0.9 | 1.6 | ||||||
| 15/5 | 1.4 | 2.4 | ||||||
| 20/5 | 1.8 | 3.2 | ||||||
| 30/5 | 2.7 | 4.8 | ||||||
| 40/5 | 3.6 | 6.4 | ||||||
| 50/5 | 4.5 | 8 | ||||||
| 75/5 | 6.8 | 12 | ||||||
| 100/5 | 9 | 16 | ||||||
| 150/5 | 13.5 | 24 | ||||||
| 200/5 | 18 | 26 | ||||||
| 300/5 | 22.5 | 40.5 | ||||||
| 400/5 | 30 | 54 | ||||||
Customization and Support: We provide tailored solutions for the LA-10Q Current Transformer, including customized current ratios, accuracy classes, and outputs. Contact us for a transformer designed to meet your specific requirements.
Outline and Dimensions of Installation
LA-10Q, LAZB-10Q Current Transformers Outline and Dimensions of Installation
Note: This product page provides comprehensive details about the LA-10Q and LAZB-10Q Current Transformers, including wiring diagrams, transformation ratios, technical specifications, accuracy, protection levels, operating principles, and dimensions. The information is for reference only. For assistance in selecting the right model, our team of experts is available to guide you. We also offer customization services to accommodate unique requirements for non-standard products.
- Magnetic Saturation in 20kV Voltage Transformers and Its Adverse Effects
- Causes, and Solutions for Abnormal Heating in 10KV Current Transformers
- Number of Permissible Grounding Points in the Secondary Circuit of Voltage Transformers
- Causes of 35KV Current Transformer Damage
- Zero-Sequence Current Transformers vs. Standard Current Transformer