Voltage regulators and inverters

Automatic voltage regulator ST4

:: ST4 automatically corrects the input voltage changes by increasing it in the case of low input voltage or lowering it in the case of high voltage. If the voltage cannot be kept within the prescribed limits, output voltage is switched off in order to protect consumer’s devices against voltage fault. ST4 incorporates overvoltage impulses protection.

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SI99 system of voltage inverters (up to 5kW)

:: SI99 system of inverters or DC/AC converters is designed for use in the telephone exchanges or remote places with the accumulator batteries of nominal voltage - 48V or 60V. The system is used in case of big commercial power fluctuations, short interruptions (near big consumers switching on) and in case of long commercial power interruptions. In all above-mentioned cases the output inverter’s voltage changes remain within 2%, the value that is acceptable to supply even most sensitive equipment.

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SI99S system of voltage inverters (up to 9kW)

:: SI99S system of inverters or DC/AC converters is designed for use in the telephone exchanges or remote places with the accumulator batteries of nominal voltage - 48V. The system is used in case of big commercial power fluctuations, short interruptions (near big consumers switching on) and in case of long commercial power interruptions. In all above-mentioned cases the output inverter’s voltage changes remain within 2%, the value that is acceptable to supply even most sensitive equipment.

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