LDZZ Fast Power Automatic Conversion Device / LDZZ

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Function : In order to ensure the continuity and reliability of power supply for important loads on board, the power supply mode of two power sources automatic conversion is usually adopted. When the two power sources are asynchronous, the traditional power conversion device will produce a large back electronic manufacturing facilty on the load side and a large impulse current when switching. LDZZ tast power automatic conversion device can switch accurately, quickly and reliably in case of main power failure, with small switching current, small impact on power grid, short switching time and uninterrupted load power supply. It can be appled to motor, inductive, resistive and other loads.

Features :

Emergency power supply: in case of main circuit failure or electronic control orcuit failure, emergency power supply can be realized through manual emergency transfer switch.

Redundant cooing: even if the fan fails, the equipment can continue to operate normally. and Gan be self cooled without fan when the cument levet is below 160A.

High protection level: the protection level of the shell can be lo44

Fault set check real-time detection of status information of pover electronic devices.

Hardware interlock: ensure the logic of opening before closing, and ensure that the two power suppies are always isolated.

Main and standby power can be set: the user can set the main and standby power remotely.

wide load adaptability: suitable for resistive, inductive, hybrid loads and motor

Fast switching technalogy: the load power down time is less than 10ms, which can ensure the continuous work of important Icads.

Split phase input technology: when two power sources are switched, the impact current to the power grid is small, and the impact current does not exceed the motor load starting current

Functional block diagramSelection description Model namingStandard sizes Technical IndexProduct compositionProduct function

For example: LDZZ-160
It means that the rated current of LDZZ fast power automatic conversion device is 160A.

LDZZ fast power automatic conversion device is composed of main switching circuit, control unit, analog detection unit, cooling system and external interface unit.

Instant conversion: when the load is resistive, the main power is directly switched to the standby power alter power loss.

Phase controlled delay conversion: when the load is inductive, the phase difference between the residual voltage of the load and the standby voltage is judged after the power loss of the main power, which is switched by the control mode of phase judgment. This condition is usyally triggered when the load voltage drops to 80%-90%, and the device is switched to the standby power when the phase is "Quasi synchronous", and the impuise current is small

Phase controlled instant conversion: load and control mode are smilar to "phase controlled delay conversion". This condion is usually triggered when the load votage drops rapidly below 80%, and the device is switched to standby power when the phase is
"Coarse synchronous", so as to ensure that the impulse current will not exceed the starting current of the motor dunng the switching process.
Reset conversion: when the main votage retums to normal, the device triggers the reset conversion function, when the voltage phase
ampilude of main power supply and sanday power supply reaches "Quasi synchronous", the device is switched back to main power supply, and the impulse current is very small.

LDZZ Fast Power Automatic Conversion Device / LDZZ

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