- RATED VOLTAGE:12KV
- RATED FREQUENCY:50HZ
- rated current:630A,
- Rated active load breaking current:630A
- Rated breaking current loop:630A
- 5% rated active load breaking current:31.5A
- Rated cable charging breaking current:10A
- Rated no-load transformer capacity:1250KVA
- mechanical Life:10000 times
- Rated current breaking times:10000 times
- Type:High Voltage
- Poles Number:3
- Place of Origin:CN;ZHE
- Brand Name:CNYUFENG
- Model Number:YFZN21-12D
High voltage vacuum load switch with fuse for ring main unit Details Listed As belows:
FZN21 -120/T630-20 type indoor high voltage vacuum load three-phase AC open relationship 50Hz indoor high voltage switchgear for rated voltage of 12KV power system. Switch with closing, carrying, breaking load and overload current capacity, also breaking, long-term no-load closing, no-load transformers and capacitors.
FZRN21-12D/T125-31.5 type indoor high voltage vacuum load switch - fuse combinations, is the load switch and fuse combination, in addition to the above features also have a short-circuit protection.
| Items | Unit | Data |
| Rated voltage | KV | 12 |
| Rated frequency | Hz | 50 |
| Rated Current | A | 630 |
| Rated active load breaking current | A | 630 |
| Rated breaking current loop | A | 630 |
| 5% rated active load breaking current | A | 31.5 |
| Rated cable charging breaking current | A | 10 |
| Rated no-load transformer capacity | KVA | 1250KVA |
| 1 min power frequency withstand voltage: (vacuum fracture, white, relatively / isolation fracture) | KV | 42/48 |
| Lightning impulse withstand voltage: (vacuum fracture, white, relatively / isolation fracture) | KV | 75/85 |
| Rated short time withstand current (heat stable) | KA/S | 20/4 |
| Rated short time withstand current (heat stable) | KA | 50 |
| Rated short-circuit current | KA | 50 |
| Rated current breaking times | 10000 | |
| Mechanical life | 10000 | |
| Vacuum interrupter contacts to allow the thickness of wear | m | 2 |
| Manual torque | Nm | ≤200 |
| Switchgear Technical Data | ||
| Items | Unit | Data |
| Rated voltage | KV | 12 |
| Rated frequency | Hz | 50 |
| Fuse rated current | A | 125 |
| Rated breaking current exchange | A | 3150 |
| Fuse triggered switch opening time | ms | 40 ±5 |
| Rated short circuit breaking current (rms) | kA | 31.5 |
| Rated short-circuit current (peak) | kA | 50 |
| 1 min power frequency withstand voltage: (vacuum fracture, white, relatively / isolation fracture) | kV | 42/48 |
| Lightning impulse withstand voltage: (vacuum fracture, white, relatively / isolation fracture) | kV | 75/85 |
| Impact energy output fuse | j | 2-5 |
| Mechanical properties of technical parameters | ||
| Items | Unit | Data |
| Contact opening distance | mm | 10±1 |
| Overtravel | mm | 4±0.5 |
| Average closing speed | m/s | 0.6±0.2 |
| Average opening speed (before the opening pitch 6mm) | m/s | 1.1 ±0.2 |
| Three-phase contact points in different period closing | ms | ≤2 |
| Contact closing bounce time | ms | ≤2 |
| Charged body distance between the air and on ground | mm | ≥125 |
| Upper and lower bracket between the main circuit resistance | μ Ω | ≤70 |
FAQ
Q: Are you trading company or manufacturer ?
A: We are factory with more than 20 years experience in this field.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days
if the goods are not in stock, it is according to quantity.
Q:Do your company have a website ?
A:Please check :www.cnyufeng.cn
Q: What is your terms of payment ?
A: Payment=500USD, 30% T/T in advance ,balance before shippment.
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