No.

Item

Unit

HV Electrical Apparatus

Transformer

LV Electrical Apparatus

1

Rated voltage

KV

6,10

6/0.4,10/0.4

0.4

2

Rated capacity

KVA

I: 200-1250

II: 50-1250

3

Rated current

A

630

100-2000

4

Rated drop-out current

KA

20

15-63

31.5

5

Rated short-time withstand current

KA

20

200~400KVA

15X1

31.5

>400KVA

30X1

6

Rated withstand current (peak)

KA

50,600

200~400KVA

30

>400KVA

63

7

Rated making current

KA

50,80

8

Power frequency withstand voltage 1min

KA

Phase-earth and phase-phase:42

Oil-immersed:35/5min

≤300V:25KV

Isolation fracture:48

Dry-type:28/5min

>300V:2.5KV

9

Lightning impulse withstand voltage(peak)

KA

Phase-earth and phase-phase:75

75

Isolation fracture:85

75

10

Protection degree

IP3X

IP2X

IP30

11

Noise level

dB

Oil immersed:<65

Dry-type:65