1.The main difference between ZFC-3 and ZFC-3N:
Standard ZFC-3 capacitor switch is using magnetic actuator. The normal economic type ZFC-3N is using spring mechanism. ZFC-3N is update type switch from ZFC-24 and ZFC-36 type vacuum load break switch.
2.General：
The FEICH’s new generation ZFC capacitor switch is a long mechnical life design vacuum switch that provides an operational life of over 100,000 (30,000open/close) maintenance-free operations. Using the ZFC will result in substantial savings from reduced maintenance and maximized bank uptime and will also improve Power Quality.
The ZFC all comply with relevant standards.
3.Using condition：
Ambient temperature: -40 ~+85 , day temperature difference: 25℃；
Altitude:≤1000m area;
Wind speed no exceeds 35m/s;
No normally intensity vibration
No intensity erosion gas, medium place (for example acid, alkali, smother eg.)
Pollution class: IV class;
Charge temperature -40℃~+85℃。
4.Offering：
With optional classes for rated current range:
Rated voltage: up to 38 kV.
Rated current: 200A up to 600A, Max 32.5 kA making capacity.
With 2NO/NC Auxiliary switch contacts prepared for wiring
Auxiliary switch, with 600 Vac(240Vdc) insulation level, and 7.5A carry current.
With high distance creepage
More than 1300 mm creepage distance
5.Main technical parameter:
Main technical data of the ZFC-3Max
No. | Item | Unit | Data |
1 | Rated voltage | KV | 38 |
2 | Capacitive switching current (A) | A | 200 up to 600 |
3 | Rated frequency | HZ | 50/60 |
4 | Dry Power frequency 1min Wet | KV | 95 |
KV | 70 |
5 | Lightning impulse withstand voltage(peak value)alternate, opposite/fracture | KV | 200 |
6 | Rated short time withstand current | KA | 6.3/8 |
7 | Symmetrical fault-making current | KA | 12.5/16 |
8 | Rated peak fault-making current | KA | 32.5/40 |
9 | Short time withstand peak current | KA | 32.5/40 |
10 | Rated operating circulate |
| O-0.3S-CO-3S-C ( 3S minimum ) |
11 | Single capacitor breaking | A | 630 |
12 | Back to back capacitor bank breaking | A | 400 |
13 | Mechanism life | Times | 30,000 |
14 | Secondary loop 1 min power frequency withstand voltage | KV | 2.5 |
15 | Auxiliary voltage | V | 110/200 AC/DC |
Note:
(*) is meant special for optional. When needed should discuss with our engineer.
