isoLR275-327 Bender

Description

Product name：isoLR275-327 Bender Controller module
Product details:

Also from a minimum value of the nominal system voltage, the ISOMETER® determines the insulation
resistance RUGF from the residual voltages UL1e and UL2e. It is an approximate value for one-sided insulation
faults and can be used as a trend indicator in cases where the ISOMETER® has to adapt to an RF and Ce relation
that varies considerably.
The determined fault can be assigned to an alarm relay via the menu. If the values RF or Un exceed the response
values activated in the ‘AL’ menu, this will be indicated by the LEDs and relays ‘K1’ and ‘K2’ according to the
alarm assignment set in the ‘out’ menu. In addition, the operation of the relay (n.o. / n.c.) can be set and the
fault memory ‘M’ can be activated.
If the values RF oder Un do not exceed their release value (response value plus hysteresis) for the period toff
without interruption, the alarm relays will switch back to their initial position and the alarm LEDs ‘AL1’/’AL2’
stop lighting. If the fault memory is activated, the alarm relays remain in the alarm condition and the LEDs light
until the reset button ‘R’ is pressed or the supply voltage Us
is interrupted.

The two parameters (‘U ˂’ and ‘U ˃’) used to monitor the nominal system voltage Un can be enabled or
disabled in the response-value menu ‘AL’ (chapter 4.4). The maximum undervoltage value is limited by the
overvoltage value.
The RMS value of the nominal system voltage Un is monitored. If the nominal system voltage Un reaches,
falls below, or exceeds the limit values (‘U ˂’ and ‘U ˃’), an alarm message will be signalled. If the maximum
permissible nominal system voltage Un set for the ISOMETER® is exceeded, an alarm message will be initiated
even when the overvoltage limit value has been deactivated. The alarm will be deleted when the limit values
plus hysteresis are no longer violated.

The operating time tae is the time required by the ISOMETER® to determine the measured value. For the
insulation measured value RF, the system leakage capacitance Ce, the residual voltages UL1e and UL2e as well
as for the faulty conductor L1/+ or L2/- it is dependent on the insulation resistance RF and the system leakage
capacitance Ce. System disturbances may lead to extended measuring times. The measuring time of the
nominal system voltage Un is independent of this and significantly shorter.

The response delay ton is set uniformly for all messages in the ‘t’ menu using the parameter ‘ton’, while
each alarm message specified in the alarm assignment has its own timer for ton. This delay can be used for
interference suppression in the case of short measuring times.
An alarm will only be signalled when a threshold value of the respective measured value is violated for the
duration of ton without interruption. Every time the threshold value is violated within the time ton, the response
delay ‘ton’ restarts once again.

Advantages: Foxboro, OVATION, TRICONEX, Allen-Bradley, ABB, Motorola, Siemens Moore, Ge Fanuc, Woodward, Bently Nevada and other major import brands!

We have the same series of models in stock.  If you don’t find the model you need, please contact us and we will provide you with an official quotation！

Colour：new Warranty: 12 months
Lead Time：3-day working day Country of origin: Sweden
Price: Please contact us Product weight：0.515kg
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service

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