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1. General
Increasing use of computer and electric home appliance, the neutral current zero sequence harmonic in line make variety types of disturbances in system.
ZSF(Zero Sequence Filter) is easy to install with electric accessories and it can reduce this large neutral current up to 90% depending on the installed position. |
2. The problems of Zero Sequence harmonics
- Trip the circuit breaker due to overcurrent
- Heat deterionration on transformer
- Malfuction of electric protector
- Overheat / Fire on the neutral line
- Communication disturbance |
3. Application
- Applicable load : Computer, OA appliance, Electronic fluorescent lamp, Single Phase SCR heater and UPS etc
- Applicable system : Single phase nonlinear loads on Three phase four wire system
- Applicable place : Office / Commercial Building, School, Apartment, Department, Factory, Medical center etc |
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- Neutral impedance adjuster upon request
- Ammeter displaying the neutral current in option
- Easy to install
- Easy to select
- Increasing power quality |
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- Protect heating and loss of line and neutral cable that is effected by zero sequence harmonic current
- Reduce unbalance of line current
- Reduce system loss
- Protect overinvestment by increasing capacity
- Reduce K-factor rating of load current at main transformer |
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