NK Series
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The NK is a series of SF6 insulated highly stable nominal capacitors available in the voltage range from 300 to 1 200 kV. It is used together with a power factor / tan delta measuring instrument as a comparison standard for exact measurements of capacitance and tan d of HV equipment like cables, transformers, bushings, capacitors, etc. The capacitors are provided with a top electrode making possible partial-discharge-free interconnections to other elements of the HV circuit. The SF6 insulated standard capacitor is designed for indoor service and is mobile on castors.
Applications
- Measurements of power factor / tan delta together with a measuring bridge
- Reference Measurements of high voltages AC voltages (AC divider)
|
Type NK Un |
Voltage kV |
Capacitance ± 3 % pF |
PD Level at Un pC |
Type |
Height H mm |
Diameter top electrode D mm |
Base frame dimension B mm |
Weight net, approx. kg |
|
30 |
30 |
1000 |
≤ 1 |
B |
685 |
---- |
510 |
90 |
|
100 |
100 |
100 |
≤ 2 |
C |
1340 |
270 |
400 |
91 |
|
200 |
200 |
100 |
≤ 2 |
D |
2000 |
600 |
1200 |
180 |
|
300 |
300 |
50 |
≤ 3 |
D |
2570 |
1200 |
1200 |
350 |
|
400 |
400 |
50 |
≤ 3 |
D |
3120 |
1200 |
1200 |
400 |
|
600 |
600 |
33.3 |
≤ 3 |
D |
4300 |
1200 |
2200 |
800 |
|
600 |
600 |
50 |
≤ 3 |
D |
4300 |
1200 |
2200 |
800 |
|
800 |
800 |
50 |
≤ 10 |
D |
6260 |
2200 |
2790 |
1300 |
|
1000 |
1000 |
20 |
≤ 10 |
E |
7980 |
2500 |
3020 |
2000 |
|
1200 |
1200 |
20 |
≤ 10 |
E |
8000 |
3400 |
3700 |
3000 |
- Highly stable capacitance with no influence from atmospheric pressure and humidity
- Very low internal dissipation factor
- Partial Discharge free
- Simultaneous tan d and voltage measurement (Dual) possible upon request.
- Secondary unit for high Voltage AC measurement under request
