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TDK-Lambda News
Constant current power supplies charge energy storage systems
Posted : 26 Oct 2016
TDK Corporation announces the introduction of the five-year warranty EVS series of constant current power supplies. Two power levels are offered; a fan cooled 600W and a convection cooled 300W. These compact power supplies are suitable for water purification systems or to charge batteries for energy storage.
Operating from a wide-range input of 85 to 265Vac , the EVS series is available with 18V (300W only), 36V and 57V outputs for charging 12V, 24V and 48V batteries, including lithium ion, nickel hydride and lead acid types. The float voltage and charging current can be user adjusted across a wide range.
The units will operate in ambient temperatures of -20 to +70°C with applicable derating above 45 to 60°C (model dependant). Overall dimensions are 84 x 42 x 180mm (W x H x D), for the 300W and 120 x 61 x 190mm for the 600W. Options include a cover assembly (standard for the 600W) and a remote on/off function for both the 300W and 600W power levels.
In addition, a 20A reverse protection module is available to avoid current flowing from the battery back into the power supply. The EVS-RP6020 is rated for operating with voltages of 7 to 60Vdc and uses a low RDSon FET to minimise the voltage drop to less than 200mV. This module is available with or without a mounting bracket, measuring 50 x 26 x 77.5mm and 60 x 32 x 93.5mm respectively.
All model numbers are safety certified to IEC/EN/UL 60950-1 with CE marking for the Low Voltage and RoHS2 Directives. The EVS power supplies also comply with EN 55011-B and EN 55022-B emissions (both conducted and radiated) and meet the EN 61000-3-2 harmonics and IEC 61000-4 immunity standards
Operating from a wide-range input of 85 to 265Vac , the EVS series is available with 18V (300W only), 36V and 57V outputs for charging 12V, 24V and 48V batteries, including lithium ion, nickel hydride and lead acid types. The float voltage and charging current can be user adjusted across a wide range.
The units will operate in ambient temperatures of -20 to +70°C with applicable derating above 45 to 60°C (model dependant). Overall dimensions are 84 x 42 x 180mm (W x H x D), for the 300W and 120 x 61 x 190mm for the 600W. Options include a cover assembly (standard for the 600W) and a remote on/off function for both the 300W and 600W power levels.
In addition, a 20A reverse protection module is available to avoid current flowing from the battery back into the power supply. The EVS-RP6020 is rated for operating with voltages of 7 to 60Vdc and uses a low RDSon FET to minimise the voltage drop to less than 200mV. This module is available with or without a mounting bracket, measuring 50 x 26 x 77.5mm and 60 x 32 x 93.5mm respectively.
All model numbers are safety certified to IEC/EN/UL 60950-1 with CE marking for the Low Voltage and RoHS2 Directives. The EVS power supplies also comply with EN 55011-B and EN 55022-B emissions (both conducted and radiated) and meet the EN 61000-3-2 harmonics and IEC 61000-4 immunity standards