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Iron Cores Series
Product Description:
This series are suitable for current measurement and microcomputer protection of electrical equipment in 11Kv or 35kV AC power system. Directly install on the connected cable.
Features:
- High permeability material, silicon steel iron core.
- Cutting iron core (split-core), low magnetic loss.
- Cores in the fire retardant plastic case, and are impregnated with epoxy resin.
- Indoor use.
- Stable performance.
Specification:
Power factor of load: COSΦ =0.8(lagging);
Rated secondary current: 5A or 1A
Rated frequency : 50HZ or 60HZ
Anti-pollution grade: Class II
Ambient temperature:-15℃ to 55℃
Daily average temperature not more than 30℃
Altitude: ≤ 1000m
| Model | LMZK1-10 | |||||
| Purpose | Measuring current transformer | Protection current transformer | ||||
| Ratio（A) | Accuracy class and rated burden（VA） | Accuracy class and rated burden（VA） | ||||
| 0.5 | 1 | 3 | 10P15 | 10P10 | 10P5 | |
| 300 | 2.5 | 5 | 7.5 | 1.5 | ||
| 400 | 2.5 | 5 | 7.5 | 1.5 | ||
| 500 | 2.5 | 5 | 7.5 | 1.5 | ||
| 600 | 2.5 | 5 | 7.5 | 1.5 | ||
| Model | LMZK3-10 | |||||||||
| Purpose | Measuring current transformer | Protection current transformer | Dual winding current transformer | |||||||
| Ratio | Acc.class and rated burden（VA） | Acc.class and rated burden（VA） | Compostie acc.class and rated burden（VA） | |||||||
| 0.5 | 1 | 3 | 10P15 | 10P10 | 10P5 | 0.5 | 1 | 10P10 | 10P5 | |
| 50 | 2.5 | 1 | 1.5 | 1.5 | ||||||
| 75 | 2.5 | 1.5 | 1.5 | 1.5 | ||||||
| 100 | 5 | 2.5 | 2.5 | 2.5 | ||||||
| 150 | 5 | 3.75 | 2.5 | 2.5 | ||||||
| 200 | 7.5 | 5 | 2.5 | 2.5 | ||||||
| 300 | 10 | 5 | 5 | 5 | ||||||
| 400 | 15 | 5 | 5 | 5 | ||||||
| 500 | 20 | 7.5 | 5 | 5 | ||||||
| 600 | 30 | 10 | 5 | 5 | ||||||
LMZK4-10 Φ73×Φ110×H32 mm ( ID×OD×H)
| Model | LMZK4-10 | |||||
| Purpose | Measuring current transformer | Protection current transformer | ||||
| Ratio（A) | Accuracy class and rated burden（VA） | Accuracy class and rated burden（VA） | ||||
| 0.5 | 1 | 3 | 10P15 | 10P10 | 10P5 | |
| 300 | 2.5 | 1 | 7.5 | 1.5 | ||
| 400 | 2.5 | 5 | 7.5 | 1.5 | ||
| 500 | 2.5 | 5 | 7.5 | 1.5 | ||
| 600 | 2.5 | 5 | 7.5 | 1.5 | ||
LMZK5 Φ75×Φ136×H80mm ( ID×OD×H)
| Model | LMZK5-10 | |||||||||
| Purpose | Measuring current transformer | Protection current transformer | Dual winding current transformer | |||||||
| Ratio | Acc.class and rated burden（VA） | Acc.class and rated burden（VA） | Compostie acc.class and rated burden（VA） | |||||||
| 0.5 | 1 | 3 | 10P15 | 10P10 | 10P5 | 0.5 | 1 | 10P10 | 10P5 | |
| 50 | 2.5 | 5 | 1 | 2.5 | 1 | |||||
| 75 | 2.5 | 5 | 1.5 | 3.75 | 1.5 | |||||
| 100 | 2.5 | 2.5 | 2.5 | 2.5 | 2 | |||||
| 150 | 5 | 5 | 2.5 | 3.75 | 1.25 | 2.5 | ||||
| 200 | 10 | 12.5 | 3.75 | 2.5 | 5 | 2 | 3.75 | |||
| 300 | 12.5 | 1.5 | 5 | 5 | 5 | 2.5 | 5 | |||
| 400 | 25 | 2 | 6.25 | 10 | 10 | 3.75 | 7.5 | |||
| 500 | 40 | 2.5 | 7.5 | 15 | 15 | 5 | 10 | |||
| 600 | 60 | 2.5 | 10 | 20 | 20 | 5 | 10 | |||
Note: The current Ratio above are common type, other specifications can be provided according to customers’ requirements.
Outline Dimension drawing(in mm ) ：
| Model | Primary current(A) | Size(mm) ID×OD×H | Weight(kg) |
| LMZK1-10 | 300-600A | Φ55×Φ112×H32 | 0.7 |
| LMZK2-10 | 50-600A | Φ55×Φ112×H53 | 1.2 |
| LMZK3-10 | 30-600A | Φ55×Φ112×H105 | Single:2.3 double:2.4 |
| LMZK4-10 | 300-600A | Φ73×Φ110×H32 | 0.8 |
| LMZK5-10 | 50-600A | Φ75×Φ136×H80 | 1.2 |
| LMZK6-10 | 50-5000A | Φ100×Φ150×H80 | Contact to know |
| LMZK7-10 | 50-5000A | Φ120×Φ188×H75 | Contact to know |
| LMZK8-10 | 50-5000A | Φ160×Φ250×H80 | Contact to know |
Application:
Widely are used in compact fully insulated ring net switch cabinets, and also used in the combined substation and cable distribution box.
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