TYHD-2 panel type fault indicator(be called indicator for short
below) is mainly used for switch gears for locally indicate short
circuit fault and earth fault and also provide wireless signal
output .
Working principle:
The principle is micro-controllers with little power consumption,
micro-controllers can automatically identify fault signals from
short circuit indicator and earth indicator, They can display the
fault signals using LED flashing lights on the spot and output the
signals by wireless.
Installing methods:
The appearance of the indicator :
Method of installing:
L1 connects with A phase for signal input from optical fiber
L2 connects with B phase for signal input from optical fiber
L3 connects with C phase for signal input from optical fiber
L4 connects with Earth line for signal input from optical fiber
Fault indicate function:
The lights on the L1,L2,L3,and Earth buttons will flash with a an
interval of 4 seconds,if the short circuit fault or earth fault
occur.This can be reset automatically according to the time delay
set before delivery from the factory or manually reset by pressing
button of “Reset/Test”.the status of low battery capacity of the
indicator can be uploaded by wireless,in the meantime, The
indicator will flash for low battery voltage(with 4 seconds of
interval).
Reset/Test function:
1) Reset: press lightly the “Reset/Test” button slightly, it will
reset after all lights on in indicator
2)Self-checking
3)L1,L2,Wireless function self-checking
4)indicator address configure
Performance index:
1.The distance of fiber communication:Typical value:5m
2.Battery can be changed
Test function:
Self-checking:
Press ““Reset/Test” button, press on L1 and L2 in turn, then let
go, after all lights are on at mean time once, the corresponding
address lights is on. In 10s, corresponding address lights are on
again, then self-checking finished.
instructions is as following table:
| Address | black point means the corresponding LED is on |
| L1(1) | L2(2) | L3(4) | E(8) |
| 1 | ● | ○ | ○ | ○ |
| 2 | ○ | ● | ○ | ○ |
| 3 | ● | ● | ○ | ○ |
| 4 | ○ | ○ | ● | ○ |
| 5 | ● | ○ | ● | ○ |
| 6 | ○ | ● | ● | ○ |
| 7 | ● | ● | ● | ○ |
| 8 | ○ | ○ | ○ | ● |
There is type test report for it, test items as following:
Type Test Items
| 1. appearance and structure 2.function 3. electrical device
performance 4.low temperature performance 5.high temperature
performance 6.alternating temperature humidity7.vibrationendurance
8.incline drop test 9. electrical device life 10. static
electricity and elecro-discharge immunity test 11.radio frequency
electromagnetic field radiated immunity test 12.surge impact
immunity test 13. power frequency magnetic field immunity test. 14.
Adjacent interference test 15.short-circuit withstand impact test
16. fire hazard test 17. power consumption test 18. protection
grade test 19. gripping strength test of grip structure. |
