Voltage transformer duty
PT Handcart
Withdrawable voltage-transformer unit for voltage measurement, protection or auxiliary voltage circuits. Specify the VT and fuse arrangement, ratios, accuracy duties, secondary wiring and cabinet interface.
Switchgear Handcarts
Compare PT, fuse, metering and isolation handcarts for medium-voltage switchgear. Start with the required function, then confirm the cabinet interface, primary and secondary arrangements, interlocks and installed dimensions before selection.
MV Switchgear Handcart Types: PT, Fuse, Metering and Isolation
Compare four withdrawable unit functions used in medium-voltage switchgear. Select the required circuit duty first, then match the cabinet, primary contacts, secondary circuits, positions and interlocks.
Fuse protection duty
Fuse Handcart
Withdrawable fuse unit for the declared protected circuit. Specify the complete fuse designation, mounting, striker or indication, interlock, earthing and cabinet interface.
Metering duty
Metering Handcart
Withdrawable metering unit configured to the project CT/VT scheme. Specify ratios, accuracy duties, burdens, wiring, seals, approvals and installed outline.
Isolation duty
Isolation Handcart
Withdrawable disconnection truck or isolation handcart for a defined conductive path. Specify current and withstand duties, contacts, positions, interlocks and cabinet interface.
How to Specify an MV Switchgear Handcart for a New Panel or Replacement
Use these five inputs to match the handcart to the switchgear and prepare a complete RFQ.
Handcart function and circuit duty
State PT, Fuse, Metering or Isolation duty and whether the project is for a new panel, a replacement or an upgrade.
Switchgear and compartment
Provide the switchgear designation, rated voltage, compartment space, cabinet width and depth, plus service, test and disconnected positions.
Primary and secondary interfaces
Define the main-contact arrangement, phase spacing, contact form, secondary plug, wiring, earthing and auxiliary circuits.
Installed components and ratings
List the exact PT, CT or fuse models, quantities, ratios, accuracy duties, burdens, rated current and required withstand values.
Drawings, quantity and delivery requirements
Send nameplates, cabinet drawings, handcart outline drawings, photos from all sides, key dimensions, quantity, destination and document requirements.
PT, Fuse, Metering and Isolation Handcart Selection Guide
Compare the electrical duty, installed components, cabinet interface and operating sequence for each handcart type before requesting a quotation.
PT Handcart
Carries the specified voltage-transformer and primary-protection arrangement for voltage measurement, metering or protection inputs.
Key selection checks
- VT model, quantity, mounting direction and winding arrangement.
- Primary and secondary voltages, ratios, accuracy duties and rated burdens.
- Primary fuses, secondary protection, earthing and static discharge arrangement.
- Service and disconnected positions, main contacts, plug, rails and interlocks.
Send with the RFQ
- Cabinet and compartment drawings with complete handcart outline.
- Single-line and secondary wiring diagrams.
- VT and fuse nameplates or approved component schedules.
Application noteSpecify the actual VT circuit. A PT Handcart and a revenue-metering handcart can use different transformer arrangements, accuracy duties, wiring and approval requirements.
Fuse Handcart
Carries a declared high-voltage fuse arrangement as a withdrawable unit for the circuit duty defined by the switchgear design.
Key selection checks
- Fuse model, purpose, quantity, rated voltage and current.
- Breaking range, striker or indication, mounting length and end-contact form.
- Protected equipment, secondary-main interlock and safe operating sequence.
- Phase spacing, insulation supports, earthing, rails and auxiliary contacts.
Send with the RFQ
- Protected-circuit description and approved fuse data.
- Cabinet interface, interlock and grounding drawings.
- Old unit photos, nameplate and measured outline for replacement work.
Application noteState whether the fuses protect a voltage transformer, control power transformer or another circuit. The protected equipment determines the fuse duty, interlock and operating sequence.
Metering Handcart
Carries the CT, VT, fuse, terminal or metering arrangement defined by the project and local metering scheme.
Key selection checks
- Exact CT and VT composition, quantities, ratios, polarities and connections.
- Accuracy classes, burdens, cores or windings and instrument security requirements.
- Metering seals, utility requirements, calibration and approval documents.
- Primary contacts, secondary plug, cabinet space, ventilation and interlocks.
Send with the RFQ
- Approved metering scheme and instrument-transformer schedules.
- Single-line, wiring, terminal and earthing diagrams.
- Utility or project metering requirements and required certificates.
Application noteDefine the complete metering scheme before ordering. The handcart may require CTs, VTs, fuses, terminals, seals or a project-specific combination.
Isolation Handcart
Provides a defined conductive connection or isolation function within the approved cabinet and operating sequence.
Key selection checks
- Rated current, short-time withstand, peak withstand and insulation levels.
- Upper and lower conductive path, contact form, phase spacing and pressure.
- Service and disconnected positions, earthing contact and mechanical location.
- Locking magnet, motor drive, auxiliary contacts and secondary plug when fitted.
Send with the RFQ
- Cabinet family, rails, stroke, mounting height and complete outline.
- Primary interface and interlock logic drawings.
- Declared current duty, withstand requirements and operating sequence.
Application noteUse an Isolation Handcart only for the conductive connection and isolation duty defined by the switchgear. It has no load-making or load-breaking capability.
MV Switchgear Handcart Technical Specifications and Interface Data
Use the common assembly data and the type-specific fields below to define a handcart that matches the switchgear, circuit duty and required documents.
Common handcart assembly data
Provide these details for every new-build, replacement or retrofit enquiry so the complete handcart can be checked against the cabinet and operating sequence.
Electrical duty
Rated voltage and frequency, insulation levels, current duty where applicable, and required withstand values.
Cabinet envelope
Cabinet family, compartment size, primary contacts, phase spacing, rails, stroke and mounting dimensions.
Operating and safety interfaces
Service and disconnected positions, earthing, interlocks, keying, secondary plug and position indication.
Documents and supply
Exact designation, included components, outline and wiring drawings, weight, service conditions and required test records.
Type-specific data
PT Handcart data
Provide these values with the RFQ
- VT arrangement
- Exact model, quantity, mounting direction, windings and residual-voltage winding where required.
- Electrical duties
- Primary and secondary voltages, ratios, accuracy classes, rated burdens and project overvoltage requirements.
- Protection
- Primary fuse model and ratings, striker or indication, plus secondary protection and earthing.
- Connections
- Single-line and wiring diagrams, primary contacts, secondary plug, terminals, positions and interlocks.
Fuse Handcart data
Provide these values with the RFQ
- Fuse duty
- Exact fuse model, protected equipment, quantity, rated voltage and current, plus declared breaking range.
- Installation
- Fuse length, end-contact form, phase spacing, insulation supports and mounting orientation.
- Safety sequence
- Striker or indication, secondary-main interlock, discharge, earthing and approved operating sequence.
- Cabinet interface
- Primary contacts, rails, positions, auxiliary contacts, complete outline and retained cabinet parts.
Metering Handcart data
Provide these values with the RFQ
- Scheme composition
- Define whether the handcart contains CTs, VTs, fuses, terminals or other metering components.
- CT duties
- Primary and secondary currents, ratios, accuracy classes, burdens, cores, polarity and security factors.
- VT duties
- Primary and secondary voltages, ratios, accuracy classes, burdens, windings and primary protection.
- Metering controls
- Connection diagram, terminals, earthing, seals, utility requirements and calibration documents.
Isolation Handcart data
Provide these values with the RFQ
- Current duty
- Rated current, short-time withstand current and duration, plus peak withstand current.
- Insulation
- Power-frequency and lightning-impulse withstand levels for earth and the isolating distance.
- Conductive path
- Upper and lower connections, contact form, phase spacing, contact pressure and temperature-rise basis.
- Mechanical interface
- Positions, earthing contact, rails, stroke, interlocks, auxiliary plug, outline and weight.
For an accurate quotation: send the switchgear nameplate, cabinet or compartment drawing, existing handcart outline, component schedules and marked interface dimensions.
Switchgear Handcart Applications, Compatibility and Replacement
Use the application to identify the correct drawings and dimensions, then confirm whether the enquiry covers a complete handcart, an installed racking mechanism or external handling equipment.
New switchgear panel production
Start from the single-line diagram, cabinet ratings, compartment arrangement and approved operating sequence.
- Define
- Installed components, electrical duties, positions, interfaces and interlock logic.
- Confirm
- Complete cabinet and handcart drawings before production approval.
Existing handcart replacement
Identify the original assembly from its nameplate, drawings, retained parts, photos and measured interfaces.
- Define
- What must be replaced, reused or modified within the approved cabinet.
- Confirm
- Contacts, rails, stroke, positions, interlocks, plug and complete outline.
Metering, protection or auxiliary-circuit upgrade
Define the circuit task and component scheme before checking whether the cabinet has the required interfaces and space.
- Define
- CT, VT or fuse duties, wiring, protection, metering and document requirements.
- Confirm
- Cabinet clearances, secondary interface, grounding and safe operation.
Confirm the equipment scope before ordering
Terms such as handcart, truck and trolley are used differently across markets. Use the equipment descriptions below to identify the item required in your RFQ.
Complete PT, Fuse, Metering or Isolation Handcart
Included on this page
Review the complete cabinet-installed assembly here by function, electrical duty and interface.
VCB circuit-breaker handcart
Related equipment
Start with the Vacuum Circuit Breakers range and confirm the breaker, truck and panel together.
Chassis truck or racking mechanism
Separate procurement item
Use Chassis Trucks and Racking Systems for the installed movement mechanism.
External transfer trolley
Separate handling equipment
Specify cabinet width, equipment mass, transfer height and travel arrangement for the external handling task.
Fixed PT, CT or instrument-transformer unit
Separate product family
Use Instrument Transformers for fixed indoor or outdoor transformer selection.
Request an MV Switchgear Handcart Quotation
Send the cabinet drawings, component data and required interface dimensions together. Reeuini can then review the handcart configuration and return a quotation with the remaining approval items clearly listed.
For replacement projects, include clear photos, nameplate details and measured dimensions from the installed unit so the proposal matches the existing compartment.
MV Switchgear Handcart Selection and Replacement FAQ
Answers to the technical and purchasing questions engineers and professional buyers ask when selecting or replacing an MV switchgear handcart.
What is an MV switchgear handcart?
An MV switchgear handcart is a withdrawable, cabinet-installed assembly that carries a defined electrical function and moves between the switchgear’s operating positions. Depending on the design, it may carry voltage transformers, current transformers, fuses or a conductive isolation path. Handcart, truck and switchgear trolley are often used as related market terms.
Which handcart type should I choose for voltage measurement, metering, fuse protection or isolation?
Choose a PT Handcart for a defined voltage-transformer circuit, a Metering Handcart for the project CT/VT metering scheme, a Fuse Handcart for a specified fused circuit, and an Isolation Handcart for a non-load-breaking conductive connection or isolation duty.
What information is required to quote a replacement switchgear handcart?
Provide the switchgear manufacturer and family, nameplate, rated voltage, compartment drawing, existing handcart designation, photos, overall dimensions, main-contact layout, phase spacing, rails, stroke, operating positions, secondary plug, earthing contact, interlocks, installed components, quantity and delivery country.
Are switchgear handcarts interchangeable between different cabinets?
Not automatically. Matching voltage class or cabinet name does not prove compatibility. The contact system, compartment envelope, rail spacing, stroke, secondary interface, earthing and interlocks must match the exact switchgear design and approved drawings.
What is the difference between a PT Handcart and a Metering Handcart?
A PT Handcart is built around a voltage-transformer circuit for voltage measurement or protection inputs. A Metering Handcart is built around the approved metering scheme and may combine CTs, VTs, fuses, terminals, wiring and sealing requirements.
What electrical data is needed for a Fuse Handcart?
State the protected equipment, exact fuse designation, rated voltage and current, breaking range, quantity, mounting length, end-contact form, striker or indication, phase spacing, earthing and the required interlock with the secondary circuit.
Can an Isolation Handcart be moved or operated under load?
No. An Isolation Handcart does not make or break load current and must not be racked in or out under load. Its permitted positions, locking system and operating sequence must follow the switchgear interlock design.
Which handcart positions, contacts and interlocks must be confirmed?
Confirm the service or connected, test or isolated and withdrawn positions used by the cabinet; primary-contact engagement; secondary-plug state; earthing continuity; position indication; locking magnet or key interlocks; and coordination with doors, shutters, earthing switches and secondary breakers.