High Voltage Test Equipment

Three-Phase Isolation Filter

Three-phase isolation filter rated 30 kVA at 0 to 800 V and 22 A, covering 0 to 200 Hz with attenuation of 60 dB or better from 10 kHz to 300 kHz and a partial discharge level of 3 pC or less at rated voltage. Supplied alongside the WF-100-0.001 non-partial-discharge coupling capacitor range.

Three-Phase Isolation Filter

Overview

Three-phase isolation filter rated 30 kVA at 0 to 800 V and 22 A, covering 0 to 200 Hz with attenuation of 60 dB or better from 10 kHz to 300 kHz and a partial discharge level of 3 pC or less at rated voltage. Supplied alongside the WF-100-0.001 non-partial-discharge coupling capacitor range.

Application Scenarios

Filtering the supply of partial discharge test circuitsAttenuating interference across the 10 kHz to 300 kHz bandCoupling capacitor selection for partial discharge measurement circuitsCustomised capacity and working voltage versions

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Detailed Description

Main technical parameters of the three-phase isolation filter: working voltage 0 to 800 V; rated current 22 A; rated capacity 30 kVA; frequency 0 to 200 Hz.

Attenuation is 60 dB or better from 10 kHz to 100 kHz and 60 dB or better from 100 kHz to 300 kHz. The partial discharge level is Q of 3 pC or less at rated voltage.

Note: the rated capacity and the working voltage of the isolation filter can be customised to the customer requirement.

WF-100-0.001 non-partial-discharge coupling capacitors: OWF60-0.001 at 60 kV and 1000 pF, 160 x 740 mm, 13 kg; OWF120-0.0005 at 120 kV and 500 pF, 160 x 900 mm, 28 kg; OWF100-0.001 at 100 kV and 1000 pF, 160 x 900 mm, 28 kg; OWF120-0.001 at 120 kV and 1000 pF, 160 x 900 mm, 28 kg; OWF150-0.002 at 150 kV and 2000 pF, 160 x 1300 mm, 29 kg; and OWF250-0.0005 at 250 kV and 500 pF, 160 x 2000 mm, 32 kg. Dimensions are given as diameter x height.

Technical Specifications

Working voltage0 – 800 V
Rated current22 A
Rated capacity30 kVA
Frequency0 – 200 Hz
Attenuation10 kHz – 100 kHz: 60 dB or better; 100 kHz – 300 kHz: 60 dB or better
Partial discharge levelQ of 3 pC or less at rated voltage
CustomisationRated capacity and working voltage customised to the customer requirement
Coupling capacitor OWF60-0.00160 kV, 1000 pF, diameter x height 160 x 740 mm, 13 kg
Coupling capacitor OWF120-0.0005120 kV, 500 pF, diameter x height 160 x 900 mm, 28 kg
Coupling capacitor OWF100-0.001100 kV, 1000 pF, diameter x height 160 x 900 mm, 28 kg
Coupling capacitor OWF120-0.001120 kV, 1000 pF, diameter x height 160 x 900 mm, 28 kg
Coupling capacitor OWF150-0.002150 kV, 2000 pF, diameter x height 160 x 1300 mm, 29 kg
Coupling capacitor OWF250-0.0005250 kV, 500 pF, diameter x height 160 x 2000 mm, 32 kg

Frequently Asked Questions

What are the main ratings of the three-phase isolation filter?
The working voltage is 0 to 800 V, the rated current is 22 A and the rated capacity is 30 kVA. The frequency range is 0 to 200 Hz.
What attenuation does the filter provide?
Attenuation is 60 dB or better from 10 kHz to 100 kHz and 60 dB or better from 100 kHz to 300 kHz. The partial discharge level is Q of 3 pC or less at rated voltage.
Can the filter be customised?
Yes. The rated capacity and the working voltage of the isolation filter can be customised to the customer requirement.

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