background image

07 

NWC1 Series Self-healing Low Voltage Shunt Capacitors

   

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

.

        

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

 

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

.

10

 

Product

 

Selection

 

and

 

Ordering

 

Information

11

    

Environmental

 

Protection

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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