Aastra Ascotel IntelliGate 150, Системное руководство

Страница: 104 / 228

Ascotel® IntelliGate® 150/300 as of I7.9
104 Installation
sy
d-
021
0/1.
7
– I7.
9 – 1
2.
2009
Rating examples
Example 1:
Office 45 with one expansion keypad (EKP)
Maximal power requirements as per
Tab. 39 : 1320 mW
Fig. 48 indicates:
• Maximum line length for a wire diameter of 0.4 mm: 770 m
• Maximum line length for a wire diameter of 0.5 mm: 1200 m
• Maximum line length for a wire diameter of 0,6 mm: 1200 m
Example 2:
One Office 35 and one Office 45 with one alpha keyboard each
Power requirements as per
Tab. 39 : 1800 mW.
Fig. 48 indicates:
• Maximum line length for a wire diameter of 0.4 mm: 560 m
• Maximum line length for a wire diameter of 0.5 mm: 880 m
• Maximum line length for a wire diameter of 0,6 mm: 1200 m
Example 3:
Evaluation of an existing line installation
Line diameter: 0.5 mm
Loop resistance: 120
Ω
Fig. 48 indicates:
• Line length: 660 m
• Power available: 2120 mW