Multifunctional Relay Protection Tester - Yangzhou DARUI
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1. Multifunctional Relay Protection Tester320×240 LCD display, offline software display area. Full Chinese display, contrast adjustable, there is a potentiometer inside the upper left corner of the panel for adjustment.
2. Photoelectric rotary mouse, it has three operations: "rotate left", "rotate right", "press to confirm". The functions of "rotate left" and "rotate right" are two: move cursor and modify data. When the cursor moves to a certain item and needs to be selected, "press" the knob to select and open or switch this item. If a data item is selected to open, it means entering the modification process of this data. At this time, use "rotate left" and "rotate right" to increase or decrease the data; if a switch item is opened (such as "amplitude/phase/frequency" three states), then rotating once switches one state. To exit data modification or item switching, "press to confirm" to exit this item modification.
Switch quantity input
Contact input channels, a total of seven channels, empty contacts or 5-220VDC. There is a common terminal for judging whether the relay operates. When the contact signal is a potential signal, the positive potential is connected to the common terminal, and cannot be reversed.
Switch quantity output
When a fault is given, the instrument outputs three pairs of empty contact signals, with a capacity of 0.5A/250VAC.
Power switch
Up means on, down means off.
Auxiliary power supply VZ output terminal
Set in the "SETUP" submenu, the default value is 0.
It can be set to VZ=VA+VB+VC, equivalent to 3V0 output, or 110VDC, 220VDC output.
Current and voltage output terminals
They are VA, VB, VC, VN
IA, IB, IC, IN
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