
Nonlinear industrial loads
For installations with converter or other nonlinear loads that produce harmonic currents.
Four product ranges · Manufacturing and coordinated supply

Product illustration. Actual configuration varies by specification.
Open product image ↗Active power filter for current harmonics produced by nonlinear electrical loads.
Price on enquiry · Configuration, quantity & destination
Supply scope, manufacturer information, applicable documents and warranty arrangements are confirmed in the quotation and order.
TDLBQ is an active harmonic-filter arrangement that measures load current and generates a controlled compensating current. The required rating depends on the harmonic current to be treated and the network connection. It is selected from actual load measurements rather than transformer capacity alone.

For installations with converter or other nonlinear loads that produce harmonic currents.

For circuits where the harmonic duty varies and an actively controlled compensation arrangement is required.

The control system measures the load waveform and identifies the compensating current required. CT location and polarity form part of the engineered measurement arrangement.
Power-electronic switching generates compensating current at the connection point. Filter current capacity must cover the selected duty without assuming all harmonic conditions are identical.
Rack, wall and cabinet arrangements are described, with modular expansion options. Available configurations and their total current duty should be confirmed for the project.
Three-wire or four-wire requirements and communication interfaces should be selected for the installation. Neutral-current duty must be identified where relevant.
Match the installation drawing, cable routes, clearances and electrical duty for the selected equipment.
Illustrative working sceneSend your selected rating and installation requirements to request the matching dimensional drawing, connection details and technical schedule.

Agree the selected specifications, applicable drawings, inspection records and identification requirements in the quotation and order.
Include quantity, destination, packing requirements and preferred trade terms. Confirm transport scope and the requested delivery schedule with the quotation.
For an existing unit, provide its model, nameplate or order reference and a description of the issue. Include relevant photos or records already available. Warranty and service scope follow the agreed order terms.
Contact about this model ↗Choose your enquiry type. Start with the information you have.
Quotations are prepared for the selected configuration, quantity and destination. Currency, validity, delivery terms, freight and any applicable duties or taxes are specified in the quotation.
New installations & project tenders
Discuss a project ↗Share representative load measurements, the connection point and required performance.
Model lists & repeat orders
Discuss supply requirements ↗Identify recurring applications and available load data; define the configuration before ordering a standard quantity.
Equipment integration & matching
Discuss an assembly ↗Provide CT locations, electrical scheme, cabinet space, cooling and communication requirements.
Identify an existing unit or part
Identify a replacement ↗Send existing module and controller details, measured symptoms and the surrounding circuit arrangement.
Illustrative enquiry scenarios.
Testing, warranty terms and after-sales scope are to be agreed in the quotation and order documents for the selected configuration.

Wiring: Three-phase four-wire
View specifications ↗
Rated voltage: 6–10 kV
View specifications ↗Mingkong High & Low Voltage Switchgear Selection Guide · Updated 24 October 2026 · Chinese / English
For a quotation, include your required model, rating, quantity and operating conditions.