Contrel RI-R38 Instruction Manual

INSTRUCTION MANUAL
IM810-U v0.3
RI-R38
DEVICE FOR INSULATION PERMANENT CONTROL FOR NEUTRAL NETWORKS (IT)

GENERAL

RI-R38 is a device that allows to control the insulation to earth in alternating neutral networks up to 440 V (IT
systems).
Putting a continuous component measure signal between the insulated line and earth it's possible to control the
insulation resistance reading the dispersion current generated to earth.
On the frontal panel of RI-R38 there is the signalling of device ON, the signalling of tripping TRIP (low insulation), a
test and a reset push-buttons and a series of micro-switches to regulated the threshold of trip.
It's available a changeover contact relay to use the low insulation signalling in a remote panel.

OPTIONS

Standard version 230 Vac, option version 115 Vac

INSTALLATION

The installation must be carried out by qualified and authorized personnel and in absence of voltage.
the instrument is O.K. and it has not suffered any damage during transport
compatible with the operating voltage of instrument.
The device is a 3 modules (17.5mm) DIN version with snap on 35mm DIN rail. It has a sealable transparent frontal
protection cover.
The green LED ON will bright after the connections are set and the instrument is power on.

DESCRIPTION

7 8 9
4
RI-R38
INSU LATION
MONITOR
RESET
150
100
50
30
TEST
10
kΩ
5
1 2 3

MICRO-SWITCHES SETTING

The frontal micro-switches allow to set the threshold of trip between 10 and 150 kΩ as it's showed in the following
figure:
100 150
50
30
10
RI-R38
10 11 12
1
ON
2
TRIP
3
4 5 6
100 150 100
50 50
30 30
10 10
instruction manual
. Make sure that the voltage supply are
1. green LED ON
signalling of the instrument working
2. red LED TRIP
signalling of trip for low insulation
3. TEST button to test the instrument functionality
4. RESET button to cancel the trip signalling (manual reset)
5. micro-switches to select the threshold of trip
150 100
50
30
10
IM810-U v0.3
Make sure that
150 100 150
50
30
10
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