Wholesale LMZ Current Transformer – 150/5A, 0.5s Class, Protection & Metering

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LMZ Current Transformer – 150/5A, 0.5s Class, Protection & Metering

Description:

The MINGTUO LMZ Current Transformer (CT) is engineered for precise current measurement and reliable circuit protection in medium-voltage electrical systems. Constructed using advanced vacuum epoxy casting technology and fire-resistant composite materials, this robust CT delivers stable, high-accuracy performance in demanding industrial and utility applications. Its compact and durable design ensures long-term operation even under challenging environmental conditions.

Applications:

Electricity metering and energy management systems

Power distribution network monitoring

Relay protection circuits

Industrial automation control

Renewable energy generation monitoring

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  • Working Principle
  • Quality Explanation
  • Product Features
  • Installation & Commissioning
  • Packaging & Shipping
  • Project Cases
  • Product Selection Guide
  • Core Workshop
  • Current Winding Workshop
  • Current Winding
  • Partial Discharge Shielding Room

Convert a large current into a small secondary current, which is then fed to the controller and other control components. The magnitude of the primary current is determined by detecting the secondary current.

  • Core Workshop
  • Current Winding Workshop
  • Current Winding
  • Partial Discharge Shielding Room
Parameter Category Specification Remarks
Rated Voltage 12 kV Standard for distribution networks
Rated Current 400A, 630A, 1250A Custom ratings available
Rated Short-Circuit Breaking Current 16 kA, 20 kA, 25 kA
Rated Short-Time Withstand Current 16 kA / 4s, 20 kA / 4s, 25 kA / 4s
Rated Peak Withstand Current 40 kA, 50 kA, 63 kA
Rated Insulation Level Power Frequency: 42 kV (1 min) / Lightning Impulse: 75 kV
Mechanical Life 10,000 operations
Electrical Life 10,000 operations (at rated current) Full capacity breaking
Interrupter Medium Vacuum Sealed ceramic bottle
Operating Mechanism Spring Manual or motorized
Control Voltage AC/DC 110V, 220V Optional 24V, 48V
Protection Degree IP67 Suitable for harsh environments
Dimensions (H×W×D) 880 × 560 × 680 mm Compact design
Weight Approx. 130 kg Easy to install
Installation Method Pole-Mounted Outdoor use
Ambient Temperature -40°C to +55°C Wide operating range
Altitude ≤ 4000 m High-altitude version available
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Manufacturing Expert
Zhejiang Mingtuo Electrical Technology Co., Ltd.
Zhejiang Mingtuo Electrical Technology Co., Ltd.
Zhejiang Mingtuo Electrical Technology Co., Ltd. is a technology-driven enterprise specializing in the research, development, and manufacturing of low-voltage and medium-voltage circuit breakers. China Suppliers of LMZ Current Transformer – 150/5A, 0.5s Class, Protection & Metering. Leveraging Liushi's comprehensive electrical industry chain and local advantages, we provide reliable and safe electrical protection products along with customized solutions for global industrial, commercial, and residential power distribution systems. We are committed to becoming a trusted electrical protection partner for global customers through professional engineering capabilities, consistent manufacturing quality, and flexible customization services.
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