
Instruction Manual
NivuFlow 650
page 52
NF 650 - rev. 01 / 29.06.2020
24.1 Overvoltage Protection for Power Supply
NIVUS recommends type EnerPro 220Tr surge arrestors (for a 100-240 V AC power system)
and EnerPro 24Tr (for 24 V DC power supply) for the mains supply.
Observe the connection direction
Observe the non-reversed connection (p-side to transmitter) as well as a correct, straight
wiring supply. Ground (earth) must lead to the unprotected side.
The overvoltage protection devices are ineffective if wired incorrectly.
1) Low impulse earthing resistance required
Fig. 24-1
Overvoltage protection for power supply AC
1) Low impulse earthing resistance required
Do not reverse protected (p) and unprotected sides of overvoltage protection
Fig. 24-2
Overvoltage protection for power supply DC
Содержание NivuFlow 650
Страница 39: ...Installation and Connection page 39 NF 650 rev 01 29 06 2020 Fig 21 4 Terminal connections NivuFlow 650 Type T4...
Страница 41: ...Installation and Connection page 41 NF 650 rev 01 29 06 2020 Fig 21 6 Terminal connections NivuFlow 650 Type TZ...
Страница 173: ...Approvals and Certificates Page 173 NF 650 rev 01 29 06 2020 Approvals and Certificates...