LB Series 35-220kV Oil-immersed Upright Current Transformer

Model

LB6-35

LB6-66

LB6-110

LB6-145

LB7-220

Maximum voltage (kV)

40.5

72.5

126

145

252

Rated frequency (Hz)

50

50

50

50

50

Rated power frequency withstand voltage (kV)

95

160

230

275

460

Local discharge (pC) under 1.2Um/√3

≤ 5

≤ 5

≤ 5

≤ 5

≤ 5

Rated primary current (A)

75-2000

50-2500

50-2500

50-2500

600-2500

Rated secondary current (A)

1 or 5

1 or 5

1 or 5

1 or 5

1 or 5

Accuracy level

5P, 10P, 0.5, 5S, 0.2, 0.2S

Accurate limit factor (ALF)

10, 15, 20, 25, 30

Security factor of instrument (FS)

5 or 10

Rated output (VA)

10-50

Short-time heat current/duration

2.5-40kA/1-3s

7.5-40kA/1-3s

7.5-40kA/1-3s

7.5-40kA/1-3s

40-50kA/1-3s

Rated dynamic stability current (kV)

6.25-100

18.75-100

18.75-100

18.75-100

100-125