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Product name: CVT
Listing Date:2017-08-07

Type CVT is an air-insulated tap changer of selector switch design. Its compact size fits well for distribution transformers up to 11kV system. In various highly populated sites or critical facilities, such as urban high rises, airports, etc., CVT is widely applied for fire-proof and low maintenance purpose. 


Item

Specification

CVT

1

Number of phases

3 phases, 1 phase

2

Maximum rated through current (A)

160

3

Rated frequency (Hz)

50 or 60

4

Connection

Y- neutral point

D-any connection

5

Max. rated step voltage (V)

500

6

Rated step capacity (kVA)

80

7

Short-circuit

current test (kA)

Thermal (3s)

3

Dynamic (Peak)

7.5

8

Max. Operating Positions

9

9

Insulation

(kV)

To ground

Highest voltage for

equipment Um

12

To ground and between phases

Rated separate source AC

withstand voltage (kV/50Hz,1min)

35

Rated lightning impulse

withstand voltage (kV,1.2/50μs)

85

Between adjacent taps

Rated separate source AC

withstand voltage (kV/50Hz,1min)

5

Rated lightning impulse

withstand voltage (kV,1.2/50μs)

20

Across the tap winding

Rated separate source AC

withstand voltage (kV/50Hz,1min)

15

Rated lightning impulse

withstand voltage (kV,1.2/50μs)

50

10

Time for one operation

4.4s

11

Mechanical life

Not less than 800,000 operations

12

Electrical life

Not less than 300,000 operations

13

Motor drive unit

SHM-D or CMA7


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2017 - 07 - 30
The current flowing through an OLTC towards the external circuit, which the apparatus is capable of transferringfrom one tap to the other at the relevant rated step voltage and which can be carried co...
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