T Series 500 W AC-DC Converters Features RoHS lead-free-solder and lead-solder-exempted products available Universal AC input range 70 to 255 VAC with PFC Class I equipment DC output for 24 and 48 V loads Battery charging for 24 and 48 V batteries with remote temperature control 4 kVAC I/O electric strength test voltage Telecom rectifier applications Very high efficiency, typically 93% Power factor >0.96, low RFI Harmonics according to IEC/EN 61000-3-2 No inrush current, hot swap capability High power density, rugged mechanical design, all boards covered with a protective lacquer Very compact 19 cassette (28 TE, 3 U, 160 mm) Safety-approved to the latest edition of IEC/EN 62368-1 and UL/CSA 60950-1 111 4.4 3 U 141 5.6 168 28 TE 6.6 Table of Contents Different Configurations and Applications .......................................22 Description........................................................................................2 Model Selection ................................................................................2 Electromagnetic Compatibility (EMC) .............................................26 Functional Description ......................................................................4 Environmental Conditions...............................................................27 Electrical Input Data .........................................................................5 Mechanical Data .............................................................................29 Electrical Output Data.......................................................................8 Safety and Installation Instructions .................................................31 Description of Options ....................................................................34 Control Features of the Battery Chargers.......................................14 Auxiliary Functions .........................................................................14 Accessories ....................................................................................35 belfuse.com/power-solutions BCD20023 Rev AF, 5 Oktober 2021T Series 500 W AC-DC Converters Description The T Series converters are electrically isolated AC-DC con verters with an output power of up to 550 W. For higher power requirements several converters may be connected in parallel. The input is ideally adapted to the mains: Full power factor correction, no inrush current, low RFI level, and high transient and surge immunity are key design features. A T Series con verter behaves similar to a resistive load. The LT models can be operated from a universal AC-input range from 85 to 255V AC. It is the preferred type for 230V AC mains, whereas the UT models are optimized for 110/120V AC mains. The output delivers an electrically isolated energy source class 1 (ES1) and is short-circuit and no-load proof. Depending on the type, two output characteristics are available, intended either for rectifier applications or for battery charging purposes. The latter types can be integrated into systems, where the output voltage is backed-up by a battery. The float charge of the battery can be set by a cell-voltage selector switch according to the battery type used. These converters are equipped with a temperature sensor input, in order to improve the life expectancy of the battery. The rectifier models are suited for DC-bus applications at constant voltage. As the output voltage is ES1, even electrically non-isolated switching regulators, such as the PSx models, may be connected to the output. The LT/UT1701 models are especially optimized to build distributed power systems together with the 48Q, CQ, or CP Series DC-DC converters, as the signaling capabilities of both families are matched. Distributed power systems have as one advantage less power losses over load lines and fewer regulation problems. Bel Power Solutions also offers backplanes for fast and simple set-up of 19 DIN-rack systems with T Series converters see Accessories. Model Selection Table 1: Model types LT and UT. Output voltage Output current Operating input voltage range and efficiency Options 1 1 V at V , 0.5 I I V - V V - V o set i nom o nom o nom i min i max min i min i max min VDC A 70 - 140 VAC % 85 255 VAC % 2, 4 2, 6 24.25 16 UT1201-7G 91 LT1201-7G 90.5 3, 4 3, 6 25.25 (27.25) 28.25 14.5 UT1240-7ZG 91 LT1240-7ZG 90 2, 5 30.5 15.2 UT1404-7G 90 D 6 45.5 9.5 LT1804-7G 91.5 B1 6 non-G 48 11 LT1702-7G 92.5 5 6 54.5 10 UT1701-7G 92 LT1701-7G 92.5 3, 5 3, 6 50.5 (54.5) 56.5 10 UT1740-7ZG 92 LT1740-7ZG 92 1 Min. efficiency measured at V and I typ. values are approx. 1% better. i nom o nom 2 Instead of output power limitation, output current limitation. 3 Output voltage range controlled by input V , remote temperature sensor, and cell voltage selector switch. cr 4 Reduced output power for V = 70 95 VAC see Output Power Limitation. i 5 Reduced output power for V = 70 100 VAC see Output Power Limitation. i 6 Reduced output power for V = 85 155 VAC see Output Power Limitation. i NFND: Not for new designs Preferred for new designs tech.support psbel.com belfuse.com/power-solutions BCD20023 Rev AF, 5 Oktober 2021 2021 Bel Power Solutions & Protection Page 2 of 37