CHINT NWC5 Series User Instruction Download Page 10

07 

10

.

1

 

User

 

should

 

provide

 

product

 

parameters

 

such

 

as

 

rated

 

voltage

rated

 

capacitance

number

 

of

 

phases

etc;

10

.

2

 

User

 

should

 

provide

 

as

 

many

 

application

 

conditions

 

as

 

possible

such

 

as

 

altitude

grid

 

harmonic

 

environment

 

and

 

application

 

industry

.

Product

 

Selection

 

and

 

Ordering

 

Information

Environmental

 

Protection

   

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

.   

NWC5/NWC6 Series Self-healing Low Voltage Shunt Capacitors

case

 

cracks

etc

.

end

See

 

3

.

3

.

2

 

for

 

harmonic

 

suppression

 

measures

.

5

Sometimes

 

there

 

is

 

buzzing

 

sound

 

in

 

the

 

cabinet

 

during

 

operation

There

 

is

 

harmonic

 

current

 

passing

 

through

 

the

 

capacitor

.

User

 

must

 

take

 

harmonic

 

suppression

 

measures

 

if

 

the

 

harmonic

 

current

 

is

 

too

 

big

 (

same

 

as

 

4

)

6

There

 

is

 

significant

 

current

 

increase

 

when

 

adding

 

a

 

capacitor

 

into

 

a

 

group

.

Either

 

abnormal

 

power

 

frequency

 

resonance

 (

underloading

), 

or

 

harmonic

 

current

 

amplification

 

or

 

there

 

is

 

resonance

.

Same

 

as

 

4

7

Slight

 

deformation

 

occurs

 

to

 

the

 

capacitor

 

case

 

after

 

the

 

capacitor

 

has

 

been

 

used

 

for

 

a

 

period

 

of

 

time

and

 

no

 

current

 

can

 

be

 

detected

Long

-

term

 

overtemperature

 

or

 

overcurrent

 

operation

 

of

 

the

 

capacitor

 

which

 

cause

 

self

-

healing

 

breakdown

 

of

 

internal

 

components

 

that

 

generates

 

gases

 

and

 

increases

 

internal

 

pressure

When

 

the

 

overpressure

 

protector

 

breaks

slight

 

deformation

 

can

 

occur

 

to

 

the

 

capacitor

 

case

.

Use

 

heat

 

dissipation

 

measures

 

to

 

lower

 

the

 

ambient

 

operating

 

temperature

 

of

 

the

 

capacitor

Select

 

products

 

with

 

higher

 

rated

 

voltage

Harmonic

 

suppression

 

measures

 

are

 

the

 

same

 

as

 

described

 

in

 

4

.

Warranty

 

Period

Environmental

 

Protection

 

and

 

Law

 & 

Regulations

9

.

1

 

Warranty

 

period

        

The

 

warranty

 

period

 

of

 

the

 

product

 

is

 

30

 

months

 

from

 

production

 (

delivery

date

 

if

 

the

 

product

 

is

 

kept

 

under

 

normal

 

storage

 

conditions

 

and

 

the

 

package

 

or

 

the

 

product

 

itself

 

is

 

in

 

good

 

condition

If

 

the

 

warranty

 

period

 

has

 

expired

please

 

inspect

 

the

 

product

 

and

 

make

 

sure

 

it

 

meets

 

all

 

the

 

requirements

 

before

 

installing

 

and

 

using

 

the

 

product

The

 

following

 

circumstances

 

are

 

not

 

within

 

the

 

scope

 

of

 

warranty

 (

excluding

 

repair

 

or

 

replacement

):

   

1

Damage

 

due

 

to

 

improper

 

use

storage

 

or

 

maintenance

 

by

 

user

   

2

Damage

 

due

 

to

 

dismantle

 

or

 

repair

 

by

 

unauthorized

 

agency

 

or

 

personnel

 

or

 

by

 

user

 

itself

   

3

The

 

warranty

 

period

 

or

 

service

 

life

 

of

 

the

 

product

 

has

 

expired

.

   

4

Damage

 

due

 

to

 

force

 

majeure

   

5

Other

 

man

-

made

 

damages

9

.

2

 

Environmental

 

Protection

   

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

.

Summary of Contents for NWC5 Series

Page 1: ...Standard IEC 60831 1 2014 IEC 60831 2 2014 NO 2021 01 NWC5 NWC6 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: ...mechanical vibration 3 3 Application conditions 3 3 1 The rated voltage of the capacitor must be higher than the voltage of user s grid When the environmental conditions exceed the limits in 3 1 user must derate the capacitor by raising its rated voltage otherwise the service life of the capacitor can be significantly shortened after long term overvoltage or overtemperature operation 3 3 2 Harmoni...

Page 5: ...Rate frequency Hz 50 or 60 Default 50 Capacitance deviation 5 8 Short circuit discharge before test Dissipation factor 30kvar product tanδ 0 0012 30kvar product tanδ 0 0015 Withstand voltage kV Inter pole power frequency 2 15UN 2s Pole to case 2 0 UN 2 kV or 3 kV take higher 5s Maximum allowable overvoltage 1 1UN no more than 8h of continuous operation within 24h Maximum allowable overcurrent 1 3I...

Page 6: ...Figure 3 28 30 Φ136 290 M16 25 Figure 3 0 4 0 45 1 2 T 1 2 Φ60 110 M10 10 Figure 1 3 4 5 T 3 5 Φ60 175 M10 10 Figure 1 6 7 5 8 T 6 8 Φ60 240 M10 10 Figure 1 0 4 0 415 0 45 5 7 5 8 10 15 16 18 20 25 30 40 5 8 Φ76 180 M12 16 Figure 2 10 12 Φ76 240 M12 16 Figure 2 14 16 Φ76 290 M12 16 Figure 2 18 20 Φ86 290 M12 16 Figure 2 22 25 Φ96 290 M16 25 Figure 2 26 30 Φ106 290 M16 25 Figure 3 32 40 Φ116 290 M1...

Page 7: ... maintenance See Figure 1 4 below for outline and installation dimensions Figure 1 Insert type product Figure 2 Cage type product Figure 3 Conducting rod type 3 phase compensation product Figure 4 Conducting rod type split phase compensation product Note Refer to Table 3 based on capacitor model then look for the outline and installation dimensions in Figure 1 Figure 4 Example For model NWC5 0 45 ...

Page 8: ...oltage of phase A phase B and phase C of each group of capacitors 6 5 3 If there is voltage but no current between phases it means the overpressure protector is disconnected user should maintain the product in time or replace it if necessary 6 5 4 Check the surface temperature of capacitor case during operation if the temperature of any individual capacitor case exceeds 65 maintain the product or ...

Page 9: ...mart capacitor or its package directly on the floor 1 The measured current of a newly connected capacitor is much smaller than the rated current on its nameplate same for multiple capacitors If a capacitor with higher rated voltage is connected to 380V grid the actual output current will be much smaller which is normal There is nothing wrong with the capacitor it is just derated User should determ...

Page 10: ...tion of the capacitor which cause self healing breakdown of internal components that generates gases and increases internal pressure When the overpressure protector breaks slight deformation can occur to the capacitor case Use heat dissipation measures to lower the ambient operating temperature of the capacitor Select products with higher rated voltage Harmonic suppression measures are the same as...

Page 11: ...DR J03 NWC5 NWC6 Series Self healing Low Voltage Shunt Capacitors IEC 60831 1 2014 IEC 60831 2 2014 08 NWC5 NWC6 Series Self healing Low Voltage Shunt Capacitors ...

Page 12: ...NWC5 NWC6 Series Self healing Low Voltage Shunt Capacitors ...

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