Main Distribution Frame constitute by the frame body, connection
block, test module, alarm systems, test equipment, protection unit
and so on, MDF is use to connection with the switch and the user
cable, patch cord, over current, over voltage protection and alarm
test function, the implementation of YD/T694-2004 standard
products.
Features:
1. All aluminum alloy frame, rigid, elegant appearance, a variety
of cable connecting all with Built-in card access methods, safe and
reliable.
2. There are many dimensions, structure for the use of protection
unit and connection block to meet the new, update, modification,
maintenance needs.
3. With four-grade alarm, can use access control, security and
other system monitoring the implementation of centralized control
or centralized alarm remote interfaces.
4. Contact reed plated with gold or bright tin, flame retardant
engineering plastic used. Has a good over-voltage protection and
over-current failure to protect.
5. The frame has perfect grounding system.
Technical parameters:
1. Work conditions:
(1) Working temperature: -5 ~ +40 (degree) (2) Relative humidity:
< 85% (30 degrees)
(3) Atmospheric pressure: 70 ~ 106 (kpa)
4) Storage temperature: -25 ~ - +55 (degrees)
2. Performance parameters:
(1) Insulation Resistance ≥ 1000MΩ
(2) high-voltage protection> 3000V (DC) / mm without breakdown,
no arc.
(3) Contact Resistance ≤ 7mΩ between reed wire and terminal into
the connection between the contact resistance ≤ 3mΩ
(4) Pull strength: ≥ 25N
