Starter PanelsVariable speed0.37–400 kW
VFD Panel
Speed control, not just starting. On a pump or fan it is usually the cheapest thing on the site in running cost.
Rating plate
VFD Panel
- Standard
- IEC 61800-5-1, IEC 61439-2
- Motor rating
- 0.37 kW to 400 kW
- Starting current
- 1 to 1.5 × FLC
- Speed range
- 0 to 100% (to 200% with a suitable motor)
- Control
- V/f, sensorless vector, closed-loop vector
- Harmonics
- Line reactor / dV-dT filter / active front end, per study
- Cooling
- Forced ventilation with filter, or air conditioned
- Communication
- Modbus, PROFIBUS, PROFINET, EtherNet/IP
- Degree of protection
- IP42 to IP54
Specifying this panel
On a centrifugal load, power follows the cube of speed. Running a fan at 80% speed uses roughly half the energy — which is why a VFD on an oversized pump usually pays back faster than any other electrical measure on a site.
Budget for the cooling and the cable. A VFD dissipates around 3% of its rating as heat inside the panel, and it needs screened motor cable with a 360° gland to keep the switching noise off everything else.
Get a harmonic study on anything above about 100 kW or where several drives share a bus. The mitigation — reactor, passive filter or active front end — is a design decision, not an accessory.
Built for
- Pumps and fans on variable demand
- Conveyors needing controlled ramp
- Extruders, mixers and winders
- Any drive where energy is the running cost
Fitted with
The assembly is ours; the switchgear inside it is genuine, authorised-channel product from the makes you specify.
Starter Panels
Other panels in this family.
Built to the same standard, and able to share a lineup with this one.
Direct on line · ≤ 7.5 kW
DOL Starter Panel
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Y-Δ · 1/3 current · ≤ 280 kW
Star Delta Starter Panel
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Tapped · 50/65/80% · High inertia
Auto Transformer Starter Panel
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Ramped · Bypassed · ≤ 400 kW
Soft Starter Panel
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Next step
Send us the single-line.
A drawing, a load list or a BOQ is enough to start. You'll get the ratings checked against the actual fault level, a general-arrangement drawing to approve, and a fixed price.