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13726661550
ZH Series Ring Main Unit (RMU) Series - Split-Core Current Transformer
The open-core current transformer is suitable for current measurement and microprocessor-based protection in AC power systems up to 35kV. Featuring a split-core design, the product is compact, lightweight, and easy to open and close, making it particularly ideal for use in compact fully-insulated ring main units. It can be directly clamped onto installed cables for quick and simple installation. The core is made of high-permeability imported silicon steel with low magnetic loss, while the windin
Product Overview:
The Split-Core Current Transformer is specifically designed for current measurement and microprocessor-based protection in AC power systems with cable circuits rated at 35kV and below, including 10kV applications. Featuring a compact structure and lightweight design, it incorporates a split-core configuration that allows for direct clamping onto pre-installed incoming and outgoing cables without the need for disassembly. This enables quick, efficient installation and makes it particularly suitable for fully insulated, compact ring main unit (RMU) switchgear.
ZH-T30K Size Parameter：
| Current Ratio |
Project |
Accuracy Class |
Load |
Rated output and its corresponding accuracy level |
|||||||||
| VA | 1% | 5% | 20% | 100% | 120% | ||||||||
| Ratio difference | phase difference | Ratio difference | phase difference | Ratio difference | phase difference | Ratio difference | phase difference | Ratio difference | phase difference | ||||
| ±% | ±% | ±% | ±% | ±% | ±% | ±% | ±% | ±% | ±% | ||||
| 50A/5A | Semi-Finished products |
||||||||||||
Finished product |
1.5 | 1VA | -2.215 | 276.7 | -0.091 | 242.4 | 0.744 | 183.63 | 1.545 | 164.21 | |||
| 75A/5A | Semi-Finished products |
||||||||||||
Finished product |
1.5 | 1VA | -1.99 | 258 | -0.87 | 222 | -0.17 | 188 | -0.15 | 189 | |||
| 100A/5A | Semi-Finished products |
||||||||||||
Finished product |
1.5 | 2.5VA | -1.38 | 95 | -0.53 | 76 | 0 | 57 | 0.03 | 55 | |||
| INPUT | Rated Output | rated load | Accuracy level (national standard) | Compressive strength | Operating Frequency | ||||||||
| 50A | 5A | 1VA | 1.5 | 10KV | 20HZ-400HZ | ||||||||
| 75A | 5A | 1VA | 1.5 | 10KV | |||||||||
| 100A | 5A | 2.5VA | 1 | 10KV | |||||||||
| ZH-K-10-32 Size Parameter： | |||||||||||||
| Rated Current Ratio | Measuring Current transformers | Protective Current Transformer | |||||||||||
| Accuracy Level and Rated Load (VA) | Accuracy Level and Rated Load(VA) | ||||||||||||
| 0.5 | 1 | 3 | 10P15 | 10P10 | 10P5 | ||||||||
| 300A/5A | 1.5 | 3.75 | 3.75 | 3.75 | |||||||||
| 400A/5A | 2.5 | 3.75 | 3.75 | 2.5 | 5 | ||||||||
| 500A/5A | 2.5 | 5 | 5 | 2.5 | 3.75 | 7.5 | |||||||
| 600A/5A | 3.75 | 7.5 | 10 | 2.5 | 3.75 | 7.5 | |||||||
| Rated Current Ratio | Measuring Current transformers | Protective Current Transformer | |||||||||||
| Accuracy Level and Rated Load(VA) | Accuracy Level and Rated Load(VA) | ||||||||||||
| 0.2 | 0.5 | 1 | 10P15 | 10P10 | 10P5 | ||||||||
| 50A/5A | 1.5 | ||||||||||||
| 75A/5A | 1.5 | 2.5 | |||||||||||
| 100A/5A | 2.5 | 1.5 | 3.75 | ||||||||||
| 150A/5A | 2.5 | 3.75 | 1.5 | 2.5 | 5 | ||||||||
| 200A/5A | 2.5 | 5 | 2.5 | 3.75 | 7.5 | ||||||||
| Project | Accuracy Class | Rated Load | Rated output and its corresponding accuracy level | ||||||||||
| 1% | 5% | 20% | 100% | 120% | |||||||||
| Ratio difference±% | Ratio difference | Ratio difference | Ratio difference | Ratio difference | Ratio difference | Ratio difference | phase difference±% | Ratio difference | phase difference | ||||
| ±% | ±% | ±% | ±% | ±% | ±% | ±% | ±% | ||||||
| Finished product | 0.2 | 2.5VA | -1.148 | 16.4 | -0.498 | 9.6 | -0.221 | 5.3 | 0.024 | 0.5 | 0.039 | 0.4 | |
| Rated Input | Rated Output | Rated Load | Accuracy grade (National standard) | Compressive Strength | Working Frequency | ||||||||
| 800A | 5A | 2.5-5VA | 0.2/0.5 | 0.66-10KV | 20HZ-400HZ | ||||||||
| 1000A | 5A | 2.5-5VA | 0.2/0.5 | 0.66-10KV | |||||||||
| Rated Current Ratio | Measuring current transformers | Protective current transformer | Double winding current transformer | ||||||||||
| Accuracy level and rated load（VA） | Accuracy level and rated load(VA) | Accuracy level and rated load | |||||||||||
| 0.2 | 0.5 | 1 | 10P15 | 10P10 | 10P5 | 0.5 | 1 | 10P10 | 10P5 | ||||
| 300A/5A | 5 | 10 | 15 | 7.5 | 10 | 20 | 5 | 7.5 | 5 | 10 | |||
| 400A/5A | 10 | 15 | 20 | 7.5 | 10 | 20 | 7.5 | 15 | 5 | 10 | |||
| 500A/5A | 15 | 20 | 25 | 10 | 15 | 30 | 10 | 15 | 7.5 | 15 | |||
| 600A/5A | 20 | 30 | 10 | 15 | 30 | 15 | 20 | 7.5 | 15 | ||||
Product Features:
- Easy & Aesthetic Installation: Two semi-circular core halves are clamped around the insulated phase conductor and securely fastened with included clamps, forming a clean, integrated appearance.
- Compact & Space-Saving Design: Small in size and lightweight, suitable for installation in narrow or confined spaces.
- High Accuracy & Anti-Saturation Performance: Meets national standard Class 0.2S accuracy, with strong anti-saturation capability for reliable measurements.
- Flexible Configuration: Available in multiple aperture sizes and variable ratios to accommodate diverse application requirements.
Note: The relevant data in this list is only for customers to use for preliminary evaluation and selection. Specific information is subject to the product specifications. Customization can be made according to customer needs.
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