Part 1: Panel indicator
1,Summary
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 .
2,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.
3.
3.1 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).
3.2 Reset/Test function
3.2.1 Reset: press lightly the “Reset/Test” button slightly, it
will reset after all lights on in indicator
3.2.2 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.(indicator current address refer
to label number in the back).address is corresponding to L1,L2,L3,E
lights by BCD code, 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 | ○ | ○ | ○ | ● |
3.2.3 L1,L2,Wireless function self-checking
press “Reset/Test” button, press on L1 and L2 and L3 in turn, then
let go, the indicator will send wireless status message to upper
computer, the “ battery low voltage” light will flash fast 3 times
to indicate, it tells test finished. If transmission is failed, the
test status will exit automatically in 1 minute. Operator also can
press slightly on “Reset/Test” button to reset indicator and exit
this status.
3.2.4 indicator address configure
When install the indicator, the panel indicator address should not
be the same in the same RMU or switching station, if the address is
same, it will result in the information transmission mixed
error.each indicator labels its current address(when installed, its
address also can be checked by the way of self-checking. If need to
modify indicator address,please follow the following steps:press
“Reset/Test” button, press on L1 and L2,L3,Earth fault lights in
turn, then let go,light of “low battery voltage” flash(with an
interval of 1s) and change to ready- setting state(automatically
exit in 20s), press again“Reset/Test” button, lights of
L1,L2,L3,Earth fault will display address (1-8)by the address
sequence of BCD code, when it displays the address which requires
to be configured, then let go at once,the expected address will
flashing clockwise with the light of “low battery voltage”, at this
time, press the button again and save this address. The operator
can refer to the self-checking steps mentioned in 2.2 to check if
the address written is right; if configuration is not right or
cancel this configuration, please not save, the configuration
4. Function
4.1 Show short circuit fault and earth fault locally.
4.2 Self-reset ,self-reset time can be set before delivery from
factory (The default value is 12 hours).
4.3 Reset manully /self-test manually is available .
4.4 address of the indicators can be configured
5. Performance index
5.1 The distance of fiber communication:
Typical value:5m;Max:10m
5.2 Ambient temperature:-35℃～70℃
5.3 Action times :more than 2000
5.4 Indicator power supply mode :built-in 3.6V/2Ah lithium cell.
5.5 Battery can be changed.
5.6 Life: continuous working for more than 10 years.
5.7 net weight :less than 0.5kg
5.8 Static power consumption :less than 12uA
For more detailde information, please contact
E-mail:bjxrqfoverseas@163com, Annie.
