Operating Manual
16
Arc fault
protection ZŁ-4A; (07.2019)
5.2.4. Optical detectors.
Optical detectors are installed directly in the protected area of the switchgear (busbars, CB,
cable connection compartment) and they detect light of the arc fault. This light is transmitted
by a fiber to the optical detectors in the bay unit. The construction of the fiber optics detector
allows one for fiber integrity testing. Maximum length of a fiber optic cable for a point sensor
is 15 m, while for the fiber optic loop it is 5 m. Detectors delivered by Energotest are ready
for installation.
5.2.5. Power supply.
A power supply can be connected to the guaranteed 220V DC or 230V AC and is a source of
24V DC for all the elements of the protection. Each unit system consisting of a central unit
and bay units should be supplied by a separate power supply. One is forbidden to supply
other devices with the power supply designed f
or ZŁ-4A protection.
Summary of Contents for ZL-4A
Page 24: ...Operating Manual 24 Arc fault protection ZŁ 4A 07 2019 Fig 5 ZŁ 4A JC dimensions ...
Page 25: ...Operating Manual Arc fault protection ZŁ 4A 07 2019 25 Fig 6 ZŁ 4A JP dimensions ...
Page 26: ...Operating Manual 26 Arc fault protection ZŁ 4A 07 2019 Fig 7 ZŁ 4A JW dimensions ...
Page 61: ...Operating Manual Arc fault protection ZŁ 4A 07 2019 61 Fig 36 Page 2 STATUS using ...