DOLD VARIMETER IMD RN 5897/300 모니터링 기술 - 페이지 3
{카테고리_이름} DOLD VARIMETER IMD RN 5897/300에 대한 모니터링 기술을 온라인으로 검색하거나 PDF를 다운로드하세요. DOLD VARIMETER IMD RN 5897/300 8 페이지. Insulation monitor
페이지 인쇄Function
Behaviour with internal device faults
If internal device faults were detected during the test function, the LED
flashes continuously red. The indicator relays K1 and K2 switch to the
alarm state.
Behavior on faulty connection
When detecting broken wire on terminals L(+)/L(-), the measurement is
disabled. The reaction time could be up to 2 min. The monitoring relays
K1 and K2 go in alarm state, the LED indicates the red flash code 1. After
removing the interruption the fault is automatically reset (max. reaction time
up to 2 min) and the measurement of the insulation resistance is continued.
Stored alarm values remain stored. An interruption of the protective
earth connections PE1/PE2 causes the same reaction as interrupting the
measuring circuit, only the LED indicate the red flash code 2.
External control input
To terminals X1/X2 an external combined Test-/Reset button can be
connected. If the terminals X1/X2 are bridged for approx. 1 s the test mode
is started. This has the same function as pressing the internal test button.
When bridging X1/X2 for > 3 s, a stored alarm will be reset. This has the
same function as pressing the internal reset button.
Programming/setting of parameters/set-up of the insulation monitor
All setting are done with 3 rotary switches on the front of the unit. To avoid
unauthorized manipulation of the settings, all 3 switches are located behind
a sealable transparent cover. The first rotary switch "R
value for alarm. In addition it is divided in 2 sections. If the setting position
is in the first section the broken wire detection is permanent enabled, if
the setting position is in the second section the broken wire detection is
permanent disabled. The second rotary switch "R
value for pre-alarm. In addition it is also divided in 2 sections. If the setting
position is in the first section, the relay output function is de-energized
on trip, if the setting position is in the second section, the relay output
function is energized on trip.
The third rotary switch "UN" selects the type of network connection. It is
also divided in 2 sections. If the setting position is in the first section, the
unit is on auto reset, if the setting position is in the second section, the
unit is on manual reset.
New settings are accepted without restart of the device.
Function Diagram
Hysteresis function
Open circuit operation
De-energized on trip
Open circuit operation
De-energized on trip
Manual reset
Open circuit operation
" sets the response
A
De-energized on trip
" sets the response
pA
Open circuit operation
De-energized on trip
Flashing Codes Status LED
3
U H
E R
Earth fault
R
pA
R
A
21-24
21-22
21-24
21-22
11-14
11-12
11-14
11-12
Reset
21-24
21-22
21-24
21-22
11-14
11-12
11-14
11-12
Self test
Extended
test
Internal
system error
Connection failure
measuring ciruit L(+)/L(-)
Connection failure
protective conductor PE1/PE2
t
t
M11593
t
M11607
10.11.23 en / 800A