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TRANSFORMERS & ELECTRICAL COMPONENTS
Power Quality & Compensation

TDLBQ · Power harmonic filter

Active power filter for current harmonics produced by nonlinear electrical loads.

Nominal operating voltage
380 V
Catalogue protection
IP30
Ambient temperature
0–40 °C
Enquire about TDLBQ ↗

Price on enquiry · Configuration, quantity & destination

Supply scope, manufacturer information, applicable documents and warranty arrangements are confirmed in the quotation and order.

APPLICATION & DUTY

Where TDLBQ fits

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.

Illustrative industrial infrastructure setting
Application illustration
APPLICATION / 01

Nonlinear industrial loads

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

Illustrative industrial infrastructure setting
Application illustration
APPLICATION / 02

Changing load profiles

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

PRODUCT ENGINEERING

Construction & operating functions

TDLBQ product illustration
TDLBQProduct illustration · Configuration varies by specification
DETAIL / 01

Current measurement and analysis

The control system measures the load waveform and identifies the compensating current required. CT location and polarity form part of the engineered measurement arrangement.

DETAIL / 02

Controlled current injection

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.

DETAIL / 03

Modular installation

Rack, wall and cabinet arrangements are described, with modular expansion options. Available configurations and their total current duty should be confirmed for the project.

DETAIL / 04

Network and communication options

Three-wire or four-wire requirements and communication interfaces should be selected for the installation. Neutral-current duty must be identified where relevant.

DEFINE THE SELECTED ASSEMBLY

Configuration & installation interfaces

SPECIFICATION & INTEGRATIONReview equipment installation

Match the installation drawing, cable routes, clearances and electrical duty for the selected equipment.

Illustrative working scene
Harmonic duty
Provide the current spectrum and representative load operating conditions.
Connection
State system voltage, wiring arrangement and intended installation point.
Packaging
Specify mounting, cooling space, current capacity and monitoring requirements.

Installation & connection checklist

  • Provide the single-line diagram and existing compensation equipment details.
  • Identify CT locations, ratios and cable routing.
  • Agree the measurement point and acceptance method.
  • Confirm the selected module and enclosure arrangement before ordering.

Drawings & configuration documents

Send your selected rating and installation requirements to request the matching dimensional drawing, connection details and technical schedule.

DOCUMENTS · DELIVERY · SUPPORT

Technical coordination & after-sales enquiries

TDLBQ product illustration
TDLBQ · Product illustration

Confirm the order documents

Agree the selected specifications, applicable drawings, inspection records and identification requirements in the quotation and order.

Coordinate delivery

Include quantity, destination, packing requirements and preferred trade terms. Confirm transport scope and the requested delivery schedule with the quotation.

Request technical support

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 ↗
START WITH WHAT YOU HAVE

Prepare a quotation for this equipment.

Choose your enquiry type. Start with the information you have.

Price on enquiry

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.

Project procurement

New installations & project tenders

Discuss a project ↗
What to prepare

Share representative load measurements, the connection point and required performance.

Distributor procurement

Model lists & repeat orders

Discuss supply requirements ↗
What to prepare

Identify recurring applications and available load data; define the configuration before ordering a standard quantity.

Panel & equipment builders

Equipment integration & matching

Discuss an assembly ↗
What to prepare

Provide CT locations, electrical scheme, cabinet space, cooling and communication requirements.

Repair & replacement

Identify an existing unit or part

Identify a replacement ↗
What to prepare

Send existing module and controller details, measured symptoms and the surrounding circuit arrangement.

Illustrative enquiry scenarios.

Selection checklist for TDLBQ
  • Single-line diagram and transformer/load ratings
  • Measured phase currents, power factor and harmonic spectrum
  • Required compensation capacity and target performance
  • CT location, installation space, cooling and communication
  • Provide the single-line diagram and existing compensation equipment details.
  • Identify CT locations, ratios and cable routing.
  • Agree the measurement point and acceptance method.
  • Confirm the selected module and enclosure arrangement before ordering.

From enquiry to an agreed supply

  1. Share the requirementModel, duty, quantity and destination.
  2. Review the configurationResolve ratings, interfaces and site conditions.
  3. Agree the technical scheduleScope, drawings, tests, price and delivery terms.
  4. Confirm delivery documentsAgree packing, identification and the applicable inspection records.

Testing, warranty terms and after-sales scope are to be agreed in the quotation and order documents for the selected configuration.

Product catalogue

Mingkong High & Low Voltage Switchgear Selection Guide · Updated 24 October 2026 · Chinese / English

Download PDF ↗

For a quotation, include your required model, rating, quantity and operating conditions.