Products  
Products Product Details
Product name: CM
Listing Date:2017-08-24

Type CM is a classic on-load tap changer composed by diverter switch & tap selector. It covers the widest application range from small power up to large power transformers. After a long history of operation and modifications, today type CM is one of the most reliable tap changers, which is able to withstand heavy duty with over 1,000 daily operations in furnace application.

Item

Specification

CMⅢ 500Y

CMⅠ500

CMⅢ 600Y

CMⅠ600

CMⅠ800

CMⅠ1200

CMⅠ1500

1

Max. rated through-current (A)

500

600

800

1200

1500

2

Rated frequency (Hz)

50 or 60

3

Connection

Three-phases for neutral point of star connection

Single-phase for any selectable winding connection

4

Max. rated step voltage (V)

3300

5

Rated step capacity (kVA)

1400

1500

2000

3100

3500

6

Short-circuit

current test (kA)

Thermal (3s)

8

8

16

24

24

Dynamic (Peak)

20

20

40

60

60

7

Max. Operating

Positions

Without change-over selector

18 (special linear regulation can be up to 34)

With change-over selector

35 (special multiple coarse regulation can be up to 107)

8

Insulation

to ground

(kV)

Highest voltage for

equipment Um

72.5

126

170

252

Rated separate source AC

withstand voltage (kV/50Hz,1min)

140

      230

       325

 460

Rated lightning impulse

withstand voltage (kV,1.2/50μs)

350

       550

      750

  1050

9

Tap selector

4 grades of B, C, D and DE according to insulation level

10

Mechanical life

Not less than 800,000 operations

11

Contact life

Not less than 200,000 operations

12

Oil compartm-ent 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%

13

Motor drive unit

SHM-D or CMA7

14

Oil filter plant

ZXJY-1 /ZXJY-2 /ZXJY-3 according to requirement


Related Products
/ Case More>>
2017 - 07 - 30
Clicks:
2017 - 08 - 01
Clicks:
2016 - 07 - 31
Clicks:
Copyright © 2005 - 2013 Shanghai Huaming Power Equipment
犀牛云提供企业云服务
Address: No.977, Tongpu Road, Shanghai, 200333, China 
Tel: 86 21 5270 8966
E-mail: export@huaming.com
邮编:330520