5 to 100 amperes Linear power supply/Charger
5 to100 Amperes Linear Power Supply/Charger
(120 Volt 60Hz)
(220 Volt 50Hz)
TX/Communications Canada Inc.
Linear Charger feature list & specifications
Products Options
120 volt 60Hz AC input, 54 volt 5 to 100 Amp output Linear Charger:
220/240 volt 50/60Hz AC input, 54 volt 5 to 100 Amp output Linear
Charger:
Other input voltages available on request.
Specifications
The linear power supply /AC input with an isolation transformer powers
charger. The output amperes and voltages are designed according to
customer requirements. At the present time, the range is from 5 to
100 amperes DC, 54 volt regulated DC linear power supply. The linear
charger provides power to a variety of telecom systems and charging
batteries at the same time. It maintains the batteries at a fully
charged state.
Other out put voltages available on request.
Features of the Linear Chargers
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Constant current and constant voltage mode linear charger.
AC input transformer isolation.
54 volts DC voltage regulated output with current limited at
rated ampere at the time order.
Over-voltage protection over 56 volts to prevent equipment
damage.
Under-voltage for batteries cut off from the load at 42 volts to
avoid batteries energy over-drain.
AC power supply monitoring for time delay to the load circuit
during AC power failure. This prevents damage from a power
surge and allows the supply to stabilize before DC power delivery
to the load.
Charger AC failure alarm relay.
Battery LOW warning at 44 volts or less.
Battery terminal reverse protection.
Temperature sensors including one sensor for transformer, two
sensors for power transistor and 24 external sensors for
batteries.
Two or more chargers can be connected in parallel for power
sharing.
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TX/Communications Canada Inc.
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Linear Charger feature list & specifications
40 characters X 4 LCD display for operation and Volt/AMP status,
messages, and faceplate LED indicators.
CPU controller with RS232 interface, internal modem and
10BasetT Ethernet interface for remote monitoring and control
(specification and features refer to document TX32-55-01).
One external input sensor (external passive contact switch).
Two relays for external control (NC or NO selectable) for general
application, such as charger failure indicator and generator
remote starter control.
All the features are programmable via the CPU controller.
Additional features are standard in the charger assembly; the
information is referred to the CPU controller assembly
(10BASET-CONSOLE.DOC)
Specifications of the Regulator
Output voltage regulation:
0.5% max.
Output ripple voltage: 0.003% typical.
Sensing Circuits and Circuits cut off Relays
The battery charger provides AC supply monitoring, charger under
voltage monitoring, battery under voltage monitoring, charger over
voltage monitoring, power transistor temperature sensors, power
transformer temperature sensor, and optional battery temperature
sensors. The sensing circuits feed the signal to the CPU controller and
determine the status of the load relays. There are two sections of
monitoring and control circuits; one part is located on the Regulator
PCB whose functions are default to automatic sensing control. The
operation status is monitored by the CPU controller. The control
function can be altered, overrode, enabled and disabled by the CPU.
AC Supply Monitoring
The AC supply is monitored by the CPLD circuitry. The AC voltage of
6.5 volt is detected by zero crossing detector circuitry. When AC
voltage is present, the positive half of the sine wave is fed into the
input of the control circuit to sample if the AC supply is present.
The AC supply monitor and control provide several functions, including
activation of the AC fail alarm relay, power on sequence to avoid high
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TX/Communications Canada Inc.
Linear Charger feature list & specifications
current surge, and time delay of power delivery to the loads when the
AC power returns after failure, thus preventing the power supply
source from oscillating.
During AC supply failure, the AC supply relay is “OFF” and the battery
supplies current to the load. At this time, if AC power returns, the AC
supply relay will not be turned on until 15 seconds later. This ensures
that the power supply source is stable and steady. Often during AC
supply failure, the power supply can return and be gone again within a
short period of time.
Charger Voltage and Current Output
The charger output voltage and current is monitored by the monitoring
circuitry and the current level and voltage level are displayed on a
4x40 LCD.
The CPU controller monitors the load voltage condition when the
charger is operating on battery only (AC supply is OFF). When the
value of the out put voltage drops below 42 volts, the battery will be
disconnected from the load. This protects the battery from over
draining its internal energy which would cause the electrodes to be
sulfated thus damaging the battery. The relay will be turned “ON”
automatically after the AC supply returns back to normal condition.
Heat Temperature Sensor
The temperature of the power supply/charger is monitored to avoid
the temperature rising above 100oC. Temperature sensing circuitry
sends the data to the CPU controller. The CPU controller turns the AC
supply relay “OFF” thus turning off the charger. The relay will not be
turned “ON” automatically during this faulty condition.
Transformer Temperature Sensor
The temperature of the power transformer is monitored to avoid the
temperature rising above 125oC. When the temperature reaches the
critical value, the controller turns the AC supply relay “OFF” thus
turning off the charger. The relay will not be turned “ON”
automatically.
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TX/Communications Canada Inc.
Linear Charger feature list & specifications
Batteries Temperature Sensor
There are 24 optional battery sensors. The temperature of the
batteries is monitored to avoid the temperature rising above 70oC.
When the temperature reaches the critical value, the CPU controller
turns the battery relay “OFF” thus disconnecting the battery from the
load and charger. Usually the battery is over charged or defective if
these conditions occur. The relay will not be turned “ON”
automatically.
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