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Products / High & Low Voltage Distribution Equipment
High & Low Voltage Distribution Equipment
Build the cabinet schedule from the circuit function, system voltage and installation space. Medium-voltage switching and low-voltage distribution need separate specifications; generation or storage interfaces and compact spaces add further design conditions.
Product routes
Find the cabinet category by system and task
Review the function and interfaces, then view the equipment or discuss the project requirements.
High & Low Voltage Distribution Cabinet
Medium-voltage switchgear and low-voltage distribution cabinet requirements.
- Typical duty
- Conventional medium-voltage switchgear or low-voltage distribution circuits. Review medium-voltage, fixed low-voltage and draw-out low-voltage arrangements against their own circuit and protection requirements.
- Selection check
- Keep medium-voltage and low-voltage ratings, drawings and protection schemes separate; confirm each cabinet function.
New Energy Dedicated Distribution Cabinet
Distribution and control interfaces for generation or storage equipment.
- Typical duty
- Generation or storage equipment with a defined distribution and control interface. Describe the power-conversion output, AC connection, protection and monitoring boundary.
- Selection check
- Check whether the generation or storage interface calls for a distinct cabinet configuration, then review its equipment layout and ratings.
Mini Distribution Cabinet
A compact enclosure discussion for a defined distribution function.
- Typical duty
- A defined distribution function where the number or arrangement of circuits must fit within limited enclosure space.
- Selection check
- Review the electrical duty, cable space, thermal conditions and maintenance access within the proposed enclosure dimensions.
Decision guide
Three cabinet briefs, different questions
Start with the circuit function and equipment boundary; cabinet size or a product photo comes later.
| Cabinet category | What starts the enquiry | What must stay distinct | Project inputs to provide |
|---|---|---|---|
| High & Low Voltage Distribution Cabinet | Defined MV switching and/or LV distribution circuits | MV and LV ratings, protection and cabinet drawings | Single-line diagram and circuit-by-circuit cabinet schedule |
| New Energy Dedicated Distribution Cabinet | A generation or storage interface drives the distribution functions | Whether the plant interface needs a distinct cabinet configuration | Power-conversion interface and protection/control brief |
| Mini Distribution Cabinet | Distribution duty is known but the installation envelope is constrained | Electrical, cable and maintenance fit within the compact envelope | Circuit list, dimensional envelope and cable-entry drawing |
Project sequence
Turn the single-line diagram into a cabinet schedule
- 01Separate network sections
Mark medium-voltage and low-voltage parts of the single-line diagram. Record the voltage, frequency and fault-duty requirements for each section without carrying one section's values into the other.
- 02List cabinet functions
Identify incoming, outgoing, bus-coupling, control, metering and protection functions as applicable. Give every proposed cabinet a circuit identifier and a place in the scheme.
- 03Check the implementation
Specify preferred switching and protection devices, cable entry, busbar interface, installation environment, access and the available room dimensions.
- 04Resolve special constraints
For energy projects, explain the inverter or storage-system interface. For a compact cabinet, confirm clearances, cable bend space and maintainable access against the actual proposed equipment.
A useful schedule names each cabinet's system section and circuit function before discussing enclosure size or internal devices.
Engineering inputs
Bring the information that changes the route.
High & Low Voltage Distribution Cabinet
- Single-line diagram and cabinet list
- System voltage and frequency by section
- Busbar and fault-duty requirements
- Circuit protection and metering
- Room layout, access and cable entry
New Energy Dedicated Distribution Cabinet
- Inverter or storage-system electrical interface
- AC distribution and control boundary
- Required feeder and monitoring functions
- Protection and metering scheme
- Plant drawing and installation conditions
Mini Distribution Cabinet
- Circuit and device schedule
- Maximum permitted dimensions
- Mounting position and maintenance access
- Cable entry and termination space
- Ambient and enclosure requirements
Procurement questions
Questions to resolve before specifying the equipment.
Can medium-voltage and low-voltage cabinets use one combined technical table?
No. Keep the sections separate in the circuit schedule and in any product parameters. Their switching devices, insulation, protection and fault-duty requirements must be checked for the actual cabinet type and system location.
What should every cabinet line in the schedule identify?
Give it a circuit reference, incoming or outgoing function, system section, required switching or protection device, metering or control duties, and the intended cable entry. The single-line diagram shows how those lines connect.
When should a fixed or draw-out low-voltage arrangement be discussed?
State the functional units, access and maintenance method required by the project. The construction choice should then be checked against the circuit schedule, room arrangement and actual cabinet design rather than inferred from a general family name.
Does a PV or storage project automatically require a dedicated cabinet model?
No. First define the power-conversion output, feeder functions, protection, control and monitoring interfaces. Those requirements determine whether a conventional or project-specific cabinet arrangement should be assessed.
Can a mini cabinet be selected from the outside dimensions alone?
No. The circuit devices, cable bend and termination space, access for operation and maintenance, thermal conditions and enclosure requirements must all fit within the available envelope.
What changes for a replacement cabinet?
Along with the new single-line and circuit schedule, send the existing cabinet nameplate, outline and foundation drawings, cable locations and any protection or control connections that must be retained. Physical fit does not establish electrical interchangeability.