Battery Charger is thyristor controlled AC / DC rectifier with automatic constant voltage and constant current ability. Input is fully isolated with isolation transformer. DC output is filtered by L/C, so DC ripple at full load always lower than 1% to increase battery life. The Charger has a modular design to provide service and maintenance simplicity.

High Protection

NORM DC chargers are SCR controlled AC / DC rectifier with automatic constant voltage and constant current ability. All operations are controlled and processed by micro controller. The load is protected against the failures of the DC charger since the load is fully isolated the system. Current module is used instead of shunt resistor so the output ripple is low and fully isolated. Input and output can be switched by circuit breakers individually. It has self protection against over temperature. The alarm contacts can be used for external system in the case of any anomaly.

Features at a Glance

• Useable as DC Current Source or DC Battery Charger
• Microcontrolled
• Adjustable Output Current
• Adjustable Output Voltage
• Adjustable Float and Boost Charging Voltage
• Adjustable Timer for Boost Charging
• Individual Output for Battery and Load Electronic Over-Under Voltage, Reverse Voltage Protection
• Over Temperature, Short Circuit Protection
• Parallel or Serial Connection
• Thyristor Controlled and Full Automatic Systems with Isolated Input Transformer
• Dry Contact and Indicators

DC Ripple < 1%
Input and output are protected with MCBs and all settings like boost charge, floating charge and battery charge current can be adjusted via front panel touchpad digitally. DC output is filtered by L/C, so DC ripple at full load always slower than 1% to increase battery life. All rectifiers have standards low-battery and rectifier failure alarm.

Parallel or Serial Connection
The Charger has a modular design to provide service and maintenance simplicity. The outputs of the Battery Chargers can be connected in parallel or in series based on the requirement (N+1).

Automatic Boost / Float Charging
Output current, boost and Float Charge Voltages are adjustable on the control panel easily. The Timer is a decrementing counter by one minute. The Charger output gives the boost charging voltage by setting the timer to any value larger than zero. The Charger returns to floating voltage level when the timer value reaches to zero.

Wide Range of Use
DC chargers are ideal for transformer energy distribution centers, gas oil energy distribution centers, natural gas energy distribution centers, mining industry security and lighting, building automation systems and for special telecommunication applications.

Automation Alarm Contacts
Mains switch failure, battery switch failure, load switch failure, low battery failure, low output voltage, over output voltage, mains failure, charger failure, over load, over temperature, low level electrolyte and earth fault alarms are among the ones that are available to be used in automation systems.

NORM DC Chargers are fully isolated since an isolation transformer is placed in between the input and output and because the DC current is controlled by a DC current module. Therefore, the load is always safe even at high input voltage and congested mains conditions. In addition, the failure risk is minimized as semi-conductors are used for the rectifier. Standard L-C filters at the output maintain safe charging of the battery groups.

State of the Art - Quality Testing

NORM power systems are thoroughly tested adhering to ISO 9001 standards to ensure maximum reliability, maintainability and safety. This is how longterm operational efficiency and high protection are sustained for mission critical processes at the moment of truth.

Digital Oscilloscope, Power Analyzer, Digital Multimeter, True RMS Multimeter, DC Loads, AC Loads, Variable Transformers, Temperature props, Heating & Cooling Test Rooms, Humidity Test Rooms, Noise Level Measurement, High Voltage Isolation Tester and Current & Voltage Harmonic Tester are among the devices used to run final quality tets to ascertain longterm reliability of the systems.

Thanks to quality checks for each component during the regular manufacturing processes, the final quality testing is completed with maximum safety mainly with 10 phases as shown in the diagram on the next page.

Tests Under Extreme Conditions
Main routine tests includes but not limited to standard tests. To ensure utmost reliability, the systems are subjected to extreme conditions as well:

• A gallon of water is splashed on to devices in case of their exposure to rain while in use
• Systems are exposed to fire to ascertain that no single component flames
• Devices are ped a half-a-meter altitude to ensure that systems continue to function even after.

1 - Load Capacity Test
The devices performance levels are measured at full load. The questions like how well the device protects the load when input voltage spikes or how the protection components (ie. thermistor) reacts to instant climatic changes at full load are examined.

2- Input Current Harmonics Test
Input current and voltage values are measured and rated against the criteria by the harmonic tester device.

3 - Output Distortion Test
Harmonic distortion, current & voltage parameters are measured against the preset criteria by the distortion meter and power analyzer.

4 - Input Voltage Range Test
Variable transformers are put in place to simulate input voltage tolerances.

5 - Vibration Test
Mechanical vibration is applied to each system to make sure the devices are safe against any probable oscillation during transportation to customers.

6 - Short Circuit Test
Off-limits current & voltage are applied to systems at full load and they are expected to safeguard the load by showing short circuit behavior.

7- Noise Level Test
Although GESS power instruments use "intelligent fan Control system", final testing is done with noise level measurement at 1 meter distance to control the noise level under 60 db.

8 - Over Voltage Test
High voltage isolation tester is used to simulate over voltage conditions and device’s functionality and reliability are measured & examined under tough conditions against the standards.

9- Temperature & Humidity Test
Products are placed in the heating & cooling test rooms to examine their functionality under 90% humidity and at temperature +50 degree celcius.