2

Rated frequency (Hz)

50 or 60

3

Number of poles

1

3

3

1

3

3

1

3

3

4

Connection

-

Y

D

-

Y

D

-

Y

D

5

Max. rated step voltage (V)

10 & 12 contacts

2000

2000-1500*

1500-1000*

6

Rated step capacity (kVA)

10 & 12 contacts

500

525

525

7

Short-circuit

current test (kA)

Thermal (3s)

4.5

4.5

7.5

Dynamic (Peak)

11.25

11.25

18.75

8

Max. Operating Positions

12 for linear

10 for linear

23 for reversing or coarse/fine

19 for reversing or coarse/fine

9

Insulation

to ground

(kV)

Highest voltage for

equipment Um

40.5

72.5

126

145

Rated separate source AC

withstand voltage (kV/50Hz,1min)

85

140

230

275

Rated lightning impulse

withstand voltage (kV,1.2/50μs)

225

350

550

650

10

Internal Insulation Level

Refer to Technical Data section 4.6

11

Mechanical life

Not less than 1,500,000 operations

12

Contact life

Not less than 600,000 operations

13

Oil compartment of diverter switch

Service pressure

0.03Mpa

Leakage test

No leakage under 0.08Mpa for 24 hours

Over pressure protection

Bursting cap busts at 300 ± 20%kPa

Protection relay

Oil flow speed set at 1.0m/s ±10%

14

Motor drive unit

SHM-D or CMA7

15

Oil filter plant

ZXJY-1 / ZXJY-2 / ZXJY-3 according to requirement (Necessary when max. rated through current is 1000A and above or OLTC used for industrial applications)