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User Manual
Rev. 1.0- 29/11/05
PTRL NV/3 & RXRL NV/3
- Never let the batteries drain completely; this may happen when mains power
remains disconnected for several days or weeks.
If these basic rules are observed, the service life of your batteries may span 2 up to
5 years, depending on quality, service duty and operating temperature (power output
will be lower at low temperatures, but battery life will be extended).
5.5.3 Back-up and charging time
Back-up time may be easily estimated based on the following assumptions:
- Manufacturers typically rate the nominal capacity of a battery with steady current
discharge at 20, or rarely 10 hours.
- For discharge rates greater than 20 hours, capacity will be reduced by a certain
percentage. For lower discharge rates, capacity is increased. Typical capacity
ratings are 70% of nominal capacity for 2-3 hours discharge time and 110% for
50 hours.
- Capacity will decrease over time and depending on usage, typically by 10-30%
on a yearly basis.
- Maximum current output of charging equipment is estimated at 0.5-1 A for PTRL
NV/3 and 1.5-2A for RXRL NV/3 when the batteries are nearly flat. Please note
that trickle-charge voltage is virtually constant, not so the current. Full recharge
time may prove long, spanning as long as several days, especially for large-size
battery systems, with high discharge rates or in the event of severe heavy duty.
The example table is based on the above assumptions; it refers to an application
comprising one PTRL NV/3, one RXRL NV/3 and a pair using back-up power supply
from 3 different battery systems with new, fully charged batteries. Current draw is the
typical rating of PTRL NV/3 transmitter operating on 5W at 2400MHz or on 10W at
900MHz. Higher output power values (for 900MHz only) may involve up to 20-30%
more current draw, whereas lower power values may require 20-30% less current,
for both frequency ranges.
PTRL NV/3 RXRL NV/3 PTRL NV/3 +
EQUIPMENT
RXRL NV/3
MODEL
Typ. absorption
1.95
0.50
2.45
[A]
Batteries backup
time 20 A/h
9
40
7.3
[hours]
Batteries backup
time 40 A/h
20.5
85
16.3
[hours]
Batteries backup
time 100 A/h
52
230
41
[hours]
Summary of Contents for PTRL NV/3
Page 1: ...PTRL NV 3 RXRL NV 3 User Manual Volume 1 Manufactured by Italy...
Page 4: ...PTRL NV 3 RXRL NV 3 ii User Manual Rev 1 0 29 11 05 This page was intentionally left blank...
Page 8: ...4 52 User Manual Rev 1 0 29 11 05 PTRL NV 3 RXRL NV 3 This page was intentionally left blank...
Page 55: ...51 52 User Manual Rev 1 0 29 11 05 PTRL NV 3 RXRL NV 3 10 Ensemble View 10 1 PTRL NV 3...
Page 56: ...52 52 User Manual Rev 1 0 29 11 05 PTRL NV 3 RXRL NV 3 10 2 RXRL NV 3...