The LZZBJ9-10C1 Current Transformer guide is an epoxy resin-cast, indoor-type transformer designed to operate under total working conditions of the strut. It is primarily used for protection and energy measurement in power systems with a rated voltage of 10kV and below and a rated frequency of 50Hz. This transformer is commonly installed in switchgear or other similar electrical equipment.
Overview
This high-precision current transformer offers excellent insulation performance and environmental adaptability. Its robust design ensures reliability in power monitoring and protection applications. With its compact size and durable construction, the LZZBJ9-10C1 current transformer is ideal for various power distribution environments.
Features
- Epoxy Resin Insulation: Fully enclosed casting provides excellent pollution and humidity resistance, making it ideal for tropical environments.
- Low Maintenance: Requires minimal upkeep; only periodic surface cleaning is necessary.
- Compact & Lightweight: Small size and reduced weight allow for flexible installation in various orientations.
- High Reliability: Designed for stable performance in demanding electrical conditions.
- Wide Current Range: Supports primary currents from 5A to 3150A.
Operation Conditions
- Rated insulation level: 12/42/75kV
- Rated secondary current: 5A or 1A
- Power frequency withstand voltage: 12kV
- Rated frequency: 50Hz/60Hz
- Ambient temperature: -5°C to +40°C
- Altitude: ≤1000m
- Standard Compliance: IEC 60044-1
Technical Data
| Rated Current Ratio (A) | Accuracy Class Combination | Rated Output (VA) (COSΦ0.8) | FS | ALF | 1s Short-Time Thermal Current (kA) | Rated Dynamic Current (kA) |
|---|---|---|---|---|---|---|
| 10-200/5 | 0.2(s)/0.2(s), 0.2(s)/0.5, 0.2(s)/10P, 0.5/10P, 0.2s/0.5/10P, 0.2/0.5/10P | 10, 15, 15 | 15 | 5 (10) | 10, 15, 20 | 150I1n, 375I1n |
| 300/5 | 0.2(s)/0.5, 0.5/10P | 31.5 | 80 | – | – | – |
| 400/5 | 0.2(s)/0.5, 0.5/10P | 31.5 | 80 | – | – | – |
| 500/5 | 0.2(s)/0.5, 0.5/10P | 40 | 100 | – | – | – |
| 600/5 | 0.2(s)/0.5, 0.5/10P | 50 | 125 | – | – | – |
| 800/5 | 0.2(s)/0.5, 0.5/10P | 20, 63 | 125 | – | – | – |
| 1000/5 | 0.2(s)/0.5, 0.5/10P | 80 | 160 | – | – | – |
| 1200-1500/5 | 0.2(s)/0.5, 0.5/10P | 80 | 160 | – | – | – |
| 1500-2000/5 | 0.2(s)/0.5, 0.5/10P | 100 | 160 | – | – | – |
| 2000-3150/5 | 0.2(s)/0.5, 0.5/10P | 130 | 160 | – | – | – |
Frequently Asked Questions (FAQs)
1. What is the primary application of the LZZBJ9-10C1 Current Transformer?
The LZZBJ9-10C1 Current Transformer is primarily used for protection and energy measurement in medium-voltage electrical systems with a rated voltage of up to 10kV.
2. Can the transformer be installed outdoors?
No, this is an indoor-type current transformer. For outdoor applications, weatherproof models should be used.
3. What maintenance is required for this current transformer?
It requires minimal maintenance, mainly consisting of periodic surface cleaning to remove dirt and ensure proper insulation performance.
Suitable Applications
- Medium Voltage Switchgear
- Substation Equipment
- Power Distribution Networks
- Industrial Electrical Systems
- Utility Metering and Protection
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