8
Technical features
Material
All the external parts are resistant to transformer oils, salt fog and UV rays.
Color
RAL 7032
(1)
Ambient temperature
From -40°C up to +80°C
Degree of protection
IP65 according to EN60529
Oil temperature
From -40°Cup to 115°C
Weight
6,5 kg
Ventilation valve
1, to prevent the formation of condensation
Cable gland
2 x M25x1.5
Terminal box
Screw terminal 2.5mm
2
Wires
Max 2.5mm
2
– advised 4x1mm
2
o 6x1mm
2
shielded twisted pair cable for analog/digital output
Oil flow speed (m/s)
Alarm
Trip
-
1,0
1,0
1,5
1,0/1,5
2,0
1,0/1,5/2,0
2,5
1,0/1,5/2,0/2,5
3,0
Electronic board features
Power supply (terminals 1-2)
24 Vdc ±10% polarized
Power consumption
0,5 W
Analog output (terminals 41-42)
4- 20 mA (dielectric strength between electronic card and analog output:1kV)
Minimum / Maximum resistance: 100 / 470 Ω
Distance for analog output
Max 30 m / 98 ft (for different demands contact COMEM)
Digital output (terminals 3-4)
Serial RS485 (for more information contact COMEM)
Distance for digital output
Max 30 m / 98 ft (for different demands contact COMEM)
Switch electrical data (according to EN50126-1/2)
Breaking capacity
Voltage
(3)
Current
Breaking capacity
24 d.c. to 220 V d.c.
2 A for 1000 maneuvers
250 W
L/R<40 ms
230 V a.c.
2 A for 1000 maneuvers
400 VA
cosФ>0.5
Dielectric strength of contacts
Short duration power frequency
withstand voltage 1 min – kV (r.m.s.)
Lightning impulse withstand voltage
kV (peak)
Between circuits and earth
2
4
Between contacts in open positions 1
(2)
3
(2)
(1) Only for C4 corrosion class, for critical environmental conditions please contact COMEM (
(2) This test cannot be performed between the flow vanes contacts in open position in case they are connected to the electronic board
(3) In case the flow vanes contacts are connected to the electronic board (see order sheet in the appendix B, line “Flow vane contacts status verification via Modbus”
selected YES), the available voltages are:
• 24-48 V a.c/d.c.
• 110-220 V a.c./d.c.
Table 3
ELECTRONIC BUCHHOLZ RELAYS
eBR
