NK Series

NK Series

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Out of Stock
Brand:Haefely
Branch: Industrial Grade
Sub Category: AC test systems

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Overview
Specifications
Features
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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

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