HARDWARE DESCRIPTION
GEK-106166E
DFF Digital Feeder Relay
29
6. HARDWARE DESCRIPTION
The DFF incorporates electronic components that might be affected by electrostatic discharge currents
flowing through certain component terminals. The main source of electrostatic discharges is the human
body, especially under low humidity conditions with carpet floors or isolating shoes. If such conditions are
present special care should be taken while manipulating DFF´s modules and boards. Operators, before
even touching any component, must make sure that their bodies are not charged by either touching a
grounded surface or by using an antistatic grounded wrist bracelet.
6.1 MECHANICAL CONSTRUCTION
6.1.1 CASE CONSTRUCTION.
The DFF case is a standard 19” (or ½ 19’’) rack, 4U high, manufactured in stainless steel and painted with black
epoxy resin. It is composed of a four-sided wrapper, which includes the modules/printed circuit guides, plus a rear
plate with all the terminal blocks.
The case has a surge ground connection terminal, essential not only in terms of safety, but also for behavior against
electromagnetic interference.
All the modules can be withdrawn, enabling easy maintenance and repair.
The DFF has a polycarbonate front cover. This keeps the relay sealed, providing protection against dust and water
(IP51 index according IEC 529). The use of a push-button allows access to the main functions without the need for
removing the cover.
The front and rear views of both versions of DFF are shown on list of figures at the end of the manual.
6.1.2 ELECTRICAL CONNECTIONS.
DC power and AC electrical connections are made through 12-way terminal blocks located at the rear of the case.
The DFF includes up to three communication ports. One in the front for local connection and the others located on
the rear plate, used for remote connection.
6.1.3 INTERNAL CONSTRUCTION.
The internal architecture of the DFF is composed of the following drawout modules:
•
Power supply module.
•
Magnetic module (AC voltage inputs).
•
Protection CPU module.
•
Communications CPU module.
•
Up to 3 Modules for the digital Inputs and Outputs. (see ordering code/model list for options)
Each of these modules has a DIN type front connector for the connection to the internal communication bus.
Summary of Contents for Multilin DFF
Page 5: ...TABLE OF CONTENTS 4 DFF Digital Feeder Relay GEK 106166E ...
Page 25: ...EQUIPMENT CONFIGURATION 24 DFF Digital Feeder Relay GEK 106166E ...
Page 29: ...TECHNICAL CHARACTERISTICS 28 DFF Digital Feeder Relay GEK 106166E ...
Page 43: ...ACCEPTANCE TESTS 42 DFF Digital Feeder Relay GEK 106166E ...
Page 45: ...KEYPAD AND DISPLAY 44 DFF Digital Feeder Relay GEK 106166E ...
Page 60: ...FIGURES GEK 106166E DFF Digital Feeder Relay 59 10 FIGURES ...
Page 67: ...FIGURES 66 DFF Digital Feeder Relay GEK 106166E Figure 7 Panel Mounting for 19 rack models ...
Page 70: ...FIGURES GEK 106166E DFF Digital Feeder Relay 69 Figure 10 Dimensions Diagram for rack models ...
Page 71: ...FIGURES 70 DFF Digital Feeder Relay GEK 106166E Figure 11 Front View for 19 rack models ...
Page 72: ...FIGURES GEK 106166E DFF Digital Feeder Relay 71 Figure 12 Rear View for 19 rack model ...
Page 73: ...FIGURES 72 DFF Digital Feeder Relay GEK 106166E Figure 13 Front View for rack models B2213F3 ...
Page 74: ...FIGURES GEK 106166E DFF Digital Feeder Relay 73 Figure 14 Rear View for rack models B2213F2 ...