Page 15 - In-line-II-Vertical-Strips

INTRODUCTION 15

—

Electronic Fuse Monitoring

Real time monitoring and easy serviceability

01

The Electronic Fuse Monitor (EFM) gives a
remote alarm at any fault conditions if a
fuse is blown and allows faults to be located
quickly.

• The EFM unit is self-supplied, which
means no additional power supply is
required
• The EFM functionality is available up to
800 V AC
• The fuse status is also visible on the —
product, with red and green LEDs InLine II with Electronic
Fuse Monitor (EFM)

L1
L2
L3
(N)
Q1 PE (N)

K1 X1
3NO
1NC Q1= Fuse switch disconnector
K1= Fuse monitor (EFM)
V1= Fuses ok
2NC
4NO V2= Fuse(s) blown
X1= Multiplug terminals
V1 V2 Q1 in open state

Fuse status Relay contacts Relay contacts
Green LED Red LED NO contact 11,12 NC contact 13,12
1. ON position Open Closed Open Closed
Fuses OK   X X
Fuses BLOWN   X X
2. OFF position
Fuses OK   X X
Fuses BLOWN   X X