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02

NWC1 Series Self-healing Low Voltage Shunt Capacitors

and

 

heat

 

dissipation

 

of

 

the

 

capacitors

 

under

 

high

 

temperature

 

environment

 

and

 

keep

 

the

 

capacitors

 

away

 

from

 

heat

 

source

.

3

.

4

 

Transportation

 

conditions

The

 

capacitors

 

should

 

be

 

transported

 

within

 

original

 

package

 (

packed

 

in

 

foam

 

box

). 

The

 

product

 

should

 

be

 

handled

 

carefully

 

during

 

transportation

to

 

prevent

 

the

 

capacitor

 

body

 

from

 

deformation

 

due

 

to

 

collision

The

 

product

 

should

 

be

 

placed

 

on

 

upper

 

level

 

when

 

loaded

 

onto

 

the

 

truck

The

 

capacitor

 

assembly

 

must

 

be

 

placed

 

vertically

 

during

 

transportation

with

 

an

 

inclination

 

less

 

than

 

30

 

degrees

.   

4

 

Key

 

Technical

 

Parameters

 

and

 

Performance

 

4

.

1

 

See

 

Table

 

2

 

for

 

key

 

technical

 

parameters

  

Table

 

2

 

Key

 

technical

 

parameters

Rate

 

voltage

 (

kV

)

0

.

4

0

.

69

  

See

 

Table

 

3

Rate

 

capacity

 (

kvar

)

5

~

100

  

See

 

Table

 

3

Rate

 

frequency

 (

Hz

)

50

 

or

 

60

  

Default

 

50

Capacitance

 

deviation

 (%)

-

5

~+

8

  

Short

 

circuit

 

discharge

 

before

 

test

 

Dissipation

 

factor

≤ 

30kvar

 

product

tan

δ≤

0

.

0012

30kvar

 

product

tan

δ≤

0

.

0015

Withstand

 

voltage

 (

kV

)

Inter

-

pole

power

 

frequency

 

2

.

15U

N

2s

Pole

-

to

-

case

2

.

0

 

U

N

+

2

 

kV

 

or

 

3

 

kV

 (

take

 

higher

), 

5s

Maximum

 

allowable

 

overvoltage

1

.

1U

N

,

 

no

 

more

 

than

 

8h

 

of

 

continuous

 

operation

 

within

 

24h

Maximum

 

allowable

 

overcurrent

1

.

3I

N

no

 

more

 

than

 

2h

 

of

 

continuous

 

operation

 

within

 

24h

  

Short

 

time

2

.

0IN

Self

-

discharge

 

characteristics

Residual

 

voltage

 

drops

 

from

 √

2U

N

 

to

 

75V

(

DC

or

 

below

 

within

 

3min

 

after

 

power

 

off

.

Ambient

 

temperature

 (℃)

-

25

~+

50

 (-

25

/

C

)

Customizable

40

~+

50

Relative

 

temperature

50

at

 

40

℃, ≤

90

at

 

20

Altitude

 (

m

)

2000

Tightening

 

torque

 (

N

?

m

)

M6

 

screw

 ≤

7

M8

 

screw

 ≤

10

Safety

 

protection

Self

-

healing

 + 

overpressure

 

protection

discharge

 

device

Short

 

circuit

 

discharge

 

before

 

test

Installation

 

method

Vertical

        Note

Other

 

voltages

 

are

 

customizable

the

 

maximum

 

capacity

 

is

 

100kvar

.

4

.

2

 

See

 

Table

 

3

 

for

 

specifications

 

and

 

outline

 

dimensions

 

of

 

main

 

models

Table

 

3

 

Specifications

 

and

 

outline

 

dimensions

 

of

 

main

 

models

 

Qc

√ 

3U

N

 

Qc

 

U

N

Rated

 

current

 

I

N

(

A

)

3

-

three

 

phase

1

-

single

 

phase

Rated

 

voltage 

U

N

(

kV

)

Optimal

 

capacity

 

Qc

(

kvar

)

Outline

 

and

 

installation

 

dimensions

Capacity

 

range

Height

 

H

Figure

 

number

0

.

4

0

.

415

0

.

45

0

.

525

0

.

69

5

7

.

5

8

10

15

16

18

20

25

30

40

50

60

,

 

80

100

1

~

10

160

Figure

 

1

12

~

16

220

Figure

 

1

18

~

20

260

Figure

 

1

22

~

30

230

Figure

 

2

32

~

40

270

Figure

 

2

45

~

60

300

Figure

 

3

80

~

100

300

Figure

 

4

Note

See

 

the

 

outline

 

and

 

installation

 

dimensions

 

in

 

this

 

manual

 

for

 

the

 

figure

 

number

 

of

 

outline

 

and

 

installation

 

dimension

 

drawings

Summary of Contents for NWC1 Series

Page 1: ...Standard IEC 60831 1 2014 IEC 60831 2 2014 NO 2021 01 NWC1 Series Self healing Low Voltage Shunt Capacitors ...

Page 2: ...maintenance 2 Installation in any damp condensed phase environment with inflammable and explosive gas is forbidden 3 When the product is being installed or maintained the power must be switched off 4 You are prohibited from touching the conductive part when the product is operating ...

Page 3: ...ation Commissioning and Operation Main Features Outline and Installation Dimensions Analysis and Troubleshooting of Faults Maintenance and Storage Product Selection and Ordering Information 11 Environmental Protection 01 01 01 02 04 04 06 06 07 08 08 Use Purpose and Application Range Warranty Period Environmental Protection and Law Regulations ...

Page 4: ...wer electronic equipment frequency converter energy saving transformation such as motor speed regulation variable frequency air conditioner etc DC rectifier inverter electrolytic plating equipment electric arc furnace and intermediate frequency furnace etc See Table 1 for capacitor selection and harmonic suppression measures under harmonic environment 3 Conditions for Normal Use Installation and T...

Page 5: ...overvoltage 1 1UN no more than 8h of continuous operation within 24h Maximum allowable overcurrent 1 3IN no more than 2h of continuous operation within 24h Short time 2 0IN Self discharge characteristics Residual voltage drops from 2UN to 75V DC or below within 3min after power off Ambient temperature 25 50 25 C Customizable 40 50 Relative temperature 50 at 40 90 at 20 Altitude m 2000 Tightening t...

Page 6: ... fuse for short circuit protection For capacitors with capacity 30kvar user can use miniature circuit breaker for short circuit protection For capacitors with capacity 30kvar miniature circuit breaker is not recommended RT36 or NT00 NWC1 series square case products consist of fully independent units with automatic protection functions The units use cylindrical stretched aluminum enclosure while th...

Page 7: ...ng lug See Table 6 for the selection of conductor sectional area Figure 5 Capacitor installation drawing Table 5 Installation spacing and safety distance Capacity kvar Minimum installation spacing S1 mm Safety distance at the top of capacitors S2 mm 1 20 30 50 22 32 50 50 35 100 80 50 6 4 Preparation and inspection before use 6 4 1 Before using the capacitor user should check if the model on the n...

Page 8: ...orage 7 1 Daily maintenance and calibration Check if the operating current of the capacitor is normal by using the amperemeter and compensation controller in the cabinet Check if there is any deformation oil leakage and overheating Abnormalities such as overcurrent and overtemperature caused by harmonic will reduce the service life of the capacitor and can cause damage to other components and cond...

Page 9: ...ms are typical when the grid harmonic is too big or there is intermittent resonance in the grid Conduct grid harmonic test or check if there are harmonic sources such as frequent converter rectifier intermediate frequency furnace or electric arc furnace installed at load end See 3 3 2 for harmonic suppression measures 5 Sometimes there is buzzing sound in the cabinet during operation There is harm...

Page 10: ...tment process or be sent to the recycling station for assortment dismantling and recycling according to local regulations In order to protect the environment the product or product parts should be disposed of according to the industrial waste treatment process or be sent to the recycling station for assortment dismantling and recycling according to local regulations 10 1 User should provide produc...

Page 11: ...08 NWC1 Series Self healing Low Voltage Shunt Capacitors DR J03 NWC1 Series Self healing Low Voltage Shunt Capacitors IEC 60831 1 2014 IEC 60831 2 2014 ...

Page 12: ...NWC1 Series Self healing Low Voltage Shunt Capacitors User Instructions ...

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