Xuji WBH-813A microcomputer transformer protection monitoring and control device
WBH-813 microtransformer protection device is suitable for 110kV voltage grade transformer.The WBH-813 device completes the backup protection and measurement and control function of the transformer side.
The first configuration scheme: the corresponding software WBH-813 / H / R2, With the measurement and control function, Overcurrent protection in the direction of repressing has two sections, Two time limits for each paragraph, Repressure overcurrent protection for a period of a time limit; Two flow in zero order direction, Two time limits for each paragraph; A zero-order overflow time limit without direction, Special des-jump ungrounding change, Ungrounding transformer with zero-order joint jump protection (for the open amount zero-order current lock zero-order overvoltage protection) jump this transformer switch; Clearance zero-order protection is a current-voltage element or logic, The same exit, A period of two time limit; Zero order overvoltage protection for a two time limit; Overload, ventilation start, load regulating lock each a time period; Composite voltage criterion, TV disconnection alarm.
The first configuration features: measurement and control function; voltage (direction) overflow protection three five time limit, can choose zero sequence jump function or gap zero order protection or zero order overvoltage protection.
The second configuration scheme: the corresponding software WBH-813 / H / R9, No measurement and control function; Three compression (direction) overcurrent protection, Three time limits for each paragraph, Direction of the first two section belt sections; Two flow in zero order direction, Two time limits for each paragraph; A zero-order overflow time limit without direction, Special des-jump ungrounding change, Ungrounding transformer with zero-order joint jump protection (for the open amount zero-order current lock zero-order overvoltage protection) jump this transformer switch; Clearance zero-order protection is a current-voltage element or logic, The same exit, A period of two time limit; Zero order overvoltage protection for a two time limit; Overload, ventilation start, load regulating lock each a time period; Composite voltage criterion, TV disconnection alarm. .
The second configuration characteristics: no measurement and control function; overvoltage (direction) overcurrent protection three sections of nine time limit, can choose zero order joint jump function or gap zero order protection or zero order overvoltage protection.
Detailed configuration of WBH-813 / H high voltage side backup protection device is shown in Table 1-3-1:
Xuji WBH-813A microcomputer transformer protection monitoring and control device
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