Vibrators With Built-In 230 V | 200 Hz Converter

A concrete vibrator with a built-in converter is a ready-made internal (poker) vibrating set: an electronic frequency converter and the poker head form one unit, powered directly from a single-phase 230 V/50 Hz mains supply. The converter raises the poker's working frequency to around 200 Hz, giving finer, faster vibration — up to 12,000 vibrations per minute — than a drive running directly at mains frequency. Pokers come in diameters from 30 to 65 mm, matched to the element's cross-section and reinforcement density.

A frequency converter is an electronic unit that turns 230 V/50 Hz mains current into output current at a working frequency of around 200 Hz, feeding the motor in the poker head through a flexible cable. A higher frequency means the eccentric weight spins faster, giving finer, more frequent vibration — up to around 12,000 vibrations per minute instead of around 3,000 at mains frequency. Finer vibration liquefies the mix around reinforcement more effectively and removes trapped air faster.

A vibrator with a built-in 230 V converter powers the poker at mains voltage, with the converter's only job being to raise the vibration frequency to around 200 Hz within one ready-made set. A 42 V vibrator uses a separate converter that, at the same frequency, also steps voltage down to the safe SELV range of 42 V — important when working in water or very wet concrete. The trade-off for that extra safety is buying the poker and converter as two separate products.

The price of a built-in-converter 230 V set depends mainly on poker diameter and converter variant — compact kits with a 30 mm poker cost in the range of a few thousand PLN net, while sets with a 58-65 mm poker and a stronger converter, such as the PRO variant, cost more. Brand affects price less than head diameter and converter power do. Current prices and promotions are on the product pages.

Poker diameter is matched to the element's cross-section and reinforcement density. A 30 mm poker suits thin elements and densely reinforced structures, where access between bars matters most. The 38 mm size is a universal choice for walls, columns and foundations, while 58 mm suits heavier slabs. A 65 mm poker is reserved for large, continuous pours, where the largest radius of action — roughly 50-65 cm — matters most.

A working frequency of around 200 Hz compared with the mains 50 Hz gives four times faster, finer poker vibration — up to around 12,000 vibrations per minute instead of around 3,000. Finer, more frequent vibration liquefies a dense mix more effectively and expels trapped air faster, especially where reinforcement is closely spaced. Actual compaction force, though, also depends on poker diameter and amplitude, not on frequency alone.

The Enar i-SPYDER line is a range of portable converters in the B, PISTOL and PRO variants, paired with pokers 30-65 mm in diameter into one set powered from a 230 V mains supply. Wacker Neuson offers comparable sets on the same operating principle — a converter raising frequency to around 200 Hz — differing mainly in housing ergonomics and weight. We service both brands, so the choice mostly comes down to operator preference.

The weight of a portable i-SPYDER-type converter depends on the variant and the power of its electronics — compact models, such as the B, weigh roughly a dozen kilograms, while more powerful variants for larger pokers, like the PRO, reach into the low twenties of kilograms. The converter is carried on a shoulder strap or set down near the pour, so the poker head itself stays light in the hand. Exact weight for a given variant is on the product page.

Safety of a 230 V set on a wet jobsite depends chiefly on a working 30 mA residual-current device (RCD) protecting the converter's circuit, together with the condition of the cable insulation and the poker's seals. Compared with 42 V sets, where poker voltage sits within the safe SELV range, a 230 V vibrator runs at full mains voltage, so in heavily damp locations or standing water, a 42 V variant is the safer choice.

Built-in-converter 230 V sets are designed for continuous work through a full shift, provided the converter cools properly and the poker is not left immersed longer than necessary — typically around 5-15 seconds per point. Roughly every 2-3 hours it is worth checking the cable, the poker's seals and the converter's ventilation openings, since overheating shortens the electronics' life. Unlike petrol equipment, run time here is limited by the unit's condition, not by fuel.