RCM150

RCM150 BEL | Alldatasheet

Document overview

• Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
• PDF pages: 18

Technical content

Features

• RoHS lead-free-solder product
• 2 input voltage ranges, covering all railway batteries
• Single output 12, 15 or 24 V
• Closed housing for chassis mounting
• Extremely high efficiency and high power density
• Low inrush current
• 3 connectors: Input, output, auxiliary
• Overtemperature, overvoltage, overcurrent, and overload protection
• Many options available
• Dimensions: RCM300 116 x 38 x 188.6 mm (4.57 x 1.5 x 4.43 in)
• Compliant to EN 50155, EN 50121-3-2, AREMA
• Fire and smoke: compliant to EN 45545 and NFPA 130
• 5 year warranty Safety-approved to the latest edition of IEC/EN 62368-1 and UL/CSA 62368-1 Table of Contents 1 pending

tech.support@psbel.com belfuse.com/power-solutions BCD.00791 Rev. AN, 10-Aug-2021 Page 2 of 18 RCM Series 150 / 300 W DC-DC Converters © 2021 Bel Power Solutions & Protection Model Selection Table 1: Standard models Input voltage Output Power Efficiency 2 Model Options Vi min [V] Vi cont [V] Vi max [V] Vo nom [V] Io nom [A] Po nom [W] η min η typ [%] 14.4 16.8 (24) 45 52.5 12 12.5 150 88 90 24RCM150-12 D, M, Q, F, K 15 10.0 150 90 91 24RCM150-15 24 6.25 150 90 91 24RCM150-24 43.2 50.4 (110) 137.5 154 12 12.5 150 91 92.5 110RCM150-12 15 10.0 150 110RCM150-15 3 24 6.25 150 92 93 110RCM150-24 14.4 16.8 (24) 45 52.5 12 25 300 89 90.5 24RCM300-12 3 24 12.5 300 90 91 24RCM300-24 43.2 50.4 (110) 137.5 154 12 25 300 91 92.5 110RCM300-12 24 12.5 300 92 93.5 110RCM300-24 1 Short time; see table 2 for details. 2 Efficiency at TA = 25 °C, Vi nom, Io nom, Vo nom, only option D fitted. 3 Contact Bel Power Solutions for availability and release date. Part Number Description Operating input voltage Vi cont (continuously): Output power: Nominal output voltage: Auxiliary functions and options: 1 Opt. D requires the auxiliary connector. Note: The sequence of options must follow the order above. Note: All models are RoHS-compliant for all six substances.

110 RCM 150 -24 D M Q F K

Available combinations of options: 24/110RCMxxx-xx (K) 24/110RCMxxx-xxD (K) 24/110RCMxxx-xxDF (K) 24/110RCMxxx-xxDMQ (K) 24/110RCMxxx-xxDMQF (K) Example: 110RCM150-24DMQ: DC-DC converter, input voltage range 50.4 to 137.5 V continuously, output providing 24 V /6.25 A, monitoring relay, output voltage adjust, shutdown input, interruption time 10 ms, integrated ORing FET, operating ambient temperature TA = –40 to 70 °C, RoHS-compliant for all six sub stances.

tech.support@psbel.com belfuse.com/power-solutions BCD.00791 Rev. AN, 10-Aug-2021 Page 3 of 18 RCM Series 150 / 300 W DC-DC Converters © 2021 Bel Power Solutions & Protection Product Marking Type designation, applicable safety approval and recognition marks, CE mark, pin allocation, and product logo. Input voltage range and input current, nominal output voltage and current, degree of protection, batch no., serial no., and data code including production site, version (modification status) and date of production. Functional Description The converters are designed as active clamp forward con verters with a switching frequency of approximately 120 kHz. The built-in high-efficient input filter together with a small input capacitance generates very low inrush current of short duration. An antiparallel diode acts as reverse polarity pro tection together with the external circuit breaker or fuse. The circuitry providing the interruption time (opt. M) is located after the input filter. The rectification on the secondary side is provided by syn chronous rectifiers, in order to keep the losses as low as possible. The output voltage control logic is located on the secondary side and influences the primary logic through magnetic feedback. An auxiliary converter supplies all circuits with a stable bias voltage. An output ORing FET is available (option Q) and allows for a redundant power supply system. If there are no external circuit breakers, it is possible to order the converter with incor porated fuse (opt. F). Because this fuse is not accessible, a serial diode provides reverse polarity protection (only with option F or M). Opt. D encompasses an additional auxiliary connector and allows for output voltage adjust and a primary shutdown. An output voltage monitor controls a relay with a change-over contact. Vi– Vi+ Isolation Vo– JM194f Auxiliary connector (only with option D) Vo+ Auxiliary converter Cy SD0 SD Cy Cy PE Opt. Q Fuse (option F) OK0 Chu Opt. M Input filter Primary control logic NTC ¹ Series diode, only fitted with opt. F or M ² Bipolar suppressor diode with opt. F or M ³ Relay contact shown under normal operating conditions and output voltage under regulation Output filter OK2Secondary control logic R– R R R+ Isolated driver NTC OK1 Fig. 1 Block diagram

tech.support@psbel.com belfuse.com/power-solutions BCD.00791 Rev. AN, 10-Aug-2021 Page 4 of 18 RCM Series 150 / 300 W DC-DC Converters © 2021 Bel Power Solutions & Protection Electrical Input Data General conditions: - TA = 25 °C, unless TC is specified. Table 2a: Input data of RCM150 models Model 24RCM150 110RCM150 Unit Characteristics Conditions min typ max min typ max Vi cont Operating input voltage continuous Io = 0 – Io max TC min – TC max VVi 2s for ≤ 2 s without shutdown 14.4 52.5 43.2 154 Vi nom Nominal input voltage 24, (36) (72), (96), 110 Vi abs Input voltage limits 3 s without damage 0 55 0 165 Ii Typical input current Vi nom, Io nom 6.8 1.5 A Pi 0 No-load input power Vi min – Vi max, Io = 0 2.5 4 4 2 6 W Pi SD Idle input power Vi min – Vi max, VSD = 0 V 0.7 1.5 0.7 2 1.5 Ci Input capacitance 1 40 10 µF Ri Input resistance 100 100 mΩ Iinr p Peak inrush current Vi = Vi max, Po nom 75 100 A tinr d Duration of inrush current 0.5 0.5 ms ton Start-up time 0 → Vi min, Po nom 1000 1000 Start-up time after removal of shutdown Vi min, Po nom VSD = 0 → 5 V 300 300 Table 2b: Input data of RCM300 models Model 24RCM300 110RCM300 Unit Characteristics Conditions min typ max min typ max Vi cont Operating input voltage continuous Io = 0 – Io max TC min – TC max VVi 2s for ≤ 2 s without shutdown 14.4 52.5 43.2 154 Vi nom Nominal input voltage 24, (36) (72), (96), 110 Vi abs Input voltage limits 3 s without damage 0 55 0 165 Ii Typical input current Vi nom, Io nom 13.9 3 2 A Pi 0 No-load input power Vi min – Vi max, Io = 0 4 6 4 2 6 W Pi SD Idle input power Vi min – Vi max, VSD = 0 V 1.5 1.5 Ci Input capacitance 1 6 12 µF Ri Input resistance 140 140 mΩ Iinr p Peak inrush current Vi = Vi max, Po nom 120 150 A tinr d Duration of inrush current 0.5 0.5 ms ton Start-up time 0 → Vi min, Po nom 1000 1000 Start-up time after removal of shutdown Vi min, Po nom VSD = 0 → 5 V 300 300

1 Not smoothed by the inrush current limiter at start-up (for inrush current calculation)

2 Typ. value at Vi max. At lower Vi, the idle and low-load input power are smaller.

tech.support@psbel.com belfuse.com/power-solutions BCD.00791 Rev. AN, 10-Aug-2021 Page 5 of 18 RCM Series 150 / 300 W DC-DC Converters © 2021 Bel Power Solutions & Protection Input Transient and Reverse Polarity Protection A suppressor diode and a symmetrical input filter form an effective protection against input transients, which typically occur in many installations, but especially in battery-driven mobile applications. If the input voltage has the wrong polarity, the incorporated antiparallel diode causes the external input circuit breaker or fuse to trip. With option M or F (incorporated fuse), an active reverse-polarity protection circuit prevents from any damage. Input Under-/Overvoltage Lockout If the input voltage is out of range, an internally generated inhibit signal dis ables the converter to avoid any damage. Inrush Current and Stability with Long Supply Lines The converter operates with relatively small input capacitance Ci resulting in low inrush current of short duration. If a converter is connected to the power source through supply lines with reasonable length, no additional measures are necessary to ensure stable operation. Only in the case of very long supply lines exhibiting a con siderable inductance Lext, an additional external capacitor Cext connected across the input pins improves the stability and prevents oscillations; see fig. 2. Vi+ Vi– Vo+ Vo– Lext Rext JM085d Cext Load Ci ri ConverterRi Table 3: Recommended values for the capacitor Cext Vi nom RCM150 RCM300 Rated voltage

24 V 1500 μF 3000 μF 40 V

36 V 1000 μF 2000 μF 63 V

72 V 220 μF 440 μF 125 V

110 V 100 μF 200 μF 200 V

Fig. 2 Input configuration Actually, the RCM Series converter with its load acts as negative resistor ri, because the input current Ii rises, when the input voltage Vi is decreased. It tends to oscillate with a resonant fre quency determined by the line inductance Lex t and the input capacitance Ci + Cext, damped by the resistor Rext. The whole system is not linear at all and eludes a simple calculation. One basic condition is given by the formula: Lext • Po max dVi Rext is the series resistor of the voltage source including supply lines. If this condition is not fulfilled, the converter may not reach stable operating conditions. Worst case conditions are at lowest Vi and highest output power Po. Recommended values for Cext for different batteries are listed in table 3, which should allow for stable operation up to an input inductance of 2 mH. Ci is specified in table 2.

tech.support@psbel.com belfuse.com/power-solutions BCD.00791 Rev. AN, 10-Aug-2021 Page 6 of 18 RCM Series 150 / 300 W DC-DC Converters © 2021 Bel Power Solutions & Protection Efficiency The efficiency depends on the model and on the input voltage. 0.4 0.8 Po / Po nom0 JM217 100 η [%] 0.60.2 Vi = 50 V Vi = 110 V 110RCM150-12DMQ Vi = 137 V 0.4 0.8 Po / Po nom0 JM210b 100 η [%] 0.60.2 Vi = 50 V Vi = 110 V 110RCM150-24DMQ Vi = 137 V Fig. 3a Efficiency versus Vi and Po (110RCM150-12DMQ) Fig. 3b Efficiency versus Vi and Po (110RCM150-24DMQ) 0.4 0.8 Po / Po nom0 JM218 100 η [%] 0.60.2 Vi = 50 V Vi = 110 V 110RCM300-24DMQ Vi = 137 V Fig. 3cFig. 3c Efficiency versus Vi and Po (110RCM300-24DMQ)

tech.support@psbel.com belfuse.com/power-solutions BCD.00791 Rev. AN, 10-Aug-2021 Page 7 of 18 RCM Series 150 / 300 W DC-DC Converters © 2021 Bel Power Solutions & Protection Electrical Output Data General conditions: - TA = 25 °C, unless TC is specified - R input not connected Table 4a: Output data of RCM150 models. Output 12 V 15 V 24 V Unit Characteristics Conditions min typ max min typ max min typ max V Vow Worst case output voltage Vi min – Vi max TC min – TC max, 0 - Io nom Vo droop Output voltage droop - 20 - 30 - 40 mV/A Vo L Overvoltage shutdown 6 14 17.5 28 V Io nom Nominal output current 12.5 10.0 6.25 A vo Output noise 3 Switching frequency Vi nom, Io nom BW = 20 MHz 50 60 80 mVppTotal incl. spikes 70 100 120 vod Dynamic load regulation Voltage deviation 5 Vi nom , 0.1 ↔ 0.9 Io nom 700 800 1000 t d 4 Recovery time 5 5 5 ms α vo Temperature coefficient of vo (NTC) 0 - Io nom, TC min – TC max - 0.02 0 - 0.02 0 - 0.02 0 %/K Table 4b: Output data of RCM300 models. Output 12 V 24 V Unit Characteristics Conditions min typ max min typ max V Vow Worst case output voltage Vi min – Vi max TC min – TC max, 0 - Io nom 11.64 12.36 23.28 24.72 Vo droop Output voltage droop - 20 - 40 mV/A Vo L Overvoltage shutdown 6 14 28 V Vo P Overvoltage protection 2 14.3 15 15.8 28.5 30 31.5 Io nom Nominal output current 25 12.5 A Io L Output current limit TC min – TC max 27 30 13.5 15 vo Output noise 3 Switching frequency Vi nom, Io nom BW = 20MHz 60 80 mVppTotal incl. spikes 80 120 vod Dynamic load regulation Voltage deviation 5 Vi nom , 0.1 ↔ 0.9 Io nom 1000 1200 t d 4 Recovery time 5 5 ms α vo Temperature coefficient of vo (NTC) 0 - Io nom, TC min – TC max - 0.02 0 - 0.02 0 %/K 1 If the output voltage is increased above Vo nom through R-input control, the output power should be reduced accordingly, so that Po max and TC max are not exceeded. 2 Breakdown voltage of the incorporated suppressor diode at 1 mA . Exceeding this value might damage the suppressor diode.

3 Measured according to IEC/EN 61204 with a probe described in annex A

4 Recovery time until Vo returns to ±1% of Vo; see fig. 4. 5 No overshoot at switch on. 6 Output overvoltage protection by an electronic circuitry.

tech.support@psbel.com belfuse.com/power-solutions BCD.00791 Rev. AN, 10-Aug-2021 Page 8 of 18 RCM Series 150 / 300 W DC-DC Converters © 2021 Bel Power Solutions & Protection Output Voltage Regulation Line and load regulation of the output is so good that input voltage and output current have virtually no influence to the output voltage. Vod Vod td td Vo ±1% Vo ±1% t t ≥ 10 µs ≥ 10 µs Vo 0.5 Io/Io nom 05102c Fig. 4 Typical dynamic load regulation of output voltage Thermal Considerations and Protection A temperature protection is incorporated in the primary and secondary control logic each. It generates an internal inhibit signal, which disables the converter in case of over tem per a ture. The converter automatically recovers, when the temper a ture drops below the limit. See fig. 5. The relationship between TA and TC depends heavily upon the conditions of operation and integration into a system. Caution: The installer must ensure that under all operating con ditions TC remains within the limits stated in table 8. 120 180 240 50 60 70 80 90 100 Po [W] TA [°C] 300 110RCM300 JM245 TC max Convection cooling 110RCM150 Fig. 5 Typical output power derating versus temperature; vertical mounting position, free convection cooling. Output Current Limitation The output is continuously protected against open-circuit (no load) and short-circuit by an electronic current limitation with rectangular characteristic; see fig. 6. Vo Vo nom 0.98 0.5 0.5 1.0 IoL Io Io nom JM219 Fig. 6 Rectangular current limitation

tech.support@psbel.com belfuse.com/power-solutions BCD.00791 Rev. AN, 10-Aug-2021 Page 9 of 18 RCM Series 150 / 300 W DC-DC Converters © 2021 Bel Power Solutions & Protection Series and Parallel Connection The outputs of several RCM Series converters may be con nected in series. Note: If the sum of the output voltages is greater than 60 V, it cannot be considered as ES1 (Electrical energy source class 1) according to the safety standards. Several RCM models of the same type can be operated in parallel connection. To ensures proper current sharing, the load lines should have equal length and section. The output voltage exhibits a slight droop characteristic, which facilitates current sharing. In addition, the output voltage tends to be lowered with increasing temperature. Redundant Systems For redundant systems, we recommend the options Q and D, see Options. LED Indicator The converters exhibit a green LED “Out OK”, signaling that the output voltage is within the specified range. Description of Options Option D: Output Monitor, Output Adjust, Shutdown Option D consists of several auxiliary functions and en compasses an additional auxiliary connector. Output Voltage Adjust (R) Note: With open R-input, Vo = Vo nom. The converter allows for adjusting the output voltage in the range of 80 to 105% of Vo nom. The adjust is accomplished by an external resistor Rext1 or Rext2, connected to the R-input; see fig. 7. Depending on the value of the required output voltage, the resistor shall be connected: either: Between the R-pin and R– to adjust the output voltage to a value below Vo nom : Vo Note: Rext1 = 0 Ω reduces Vo to 80%. or: Between the R-pin and R+ to adjust the output voltage to a value greater than Vo nom : (Vo – 2.5 V)

2.5 V • (Vo/Vo nom – 1)

Note: Rext2 = 0 Ω increases Vo to 105%. Ra = 300 kΩ for Vo nom = 12 V Ra = xxx kΩ for Vo nom = 15 V Ra = 680 kΩ for Vo nom = 24 V Vo– 4 kΩVref = 2.5 V Rext1 Rext2 JM244 Vi– Vi+ Control logic Bias Ra 15.8 kΩ R Fig. 7 Output voltage control via R-input

tech.support@psbel.com belfuse.com/power-solutions BCD.00791 Rev. AN, 10-Aug-2021 Page 10 of 18 RCM Series 150 / 300 W DC-DC Converters © 2021 Bel Power Solutions & Protection Output Voltage Monitor (D) The output voltage Vo is monitored. When Vo is in range, a relay with a change-over contact is activated, connecting OK0 with OK1. Note: The trigger levels are typ. ±5 % of Vo nom (with open R-input). Data of relay contacts: 0.4 A /150 VDC Primary Shutdown (SD) The output of the converter may be enabled or disabled by a logic signal (e.g. CMOS) applied between the shutdown pin SD and SD0 (= Vi–). If the shutdown function is not re quired, pin SD can be left open-circuit. Voltage on pin SD: Converter operating: 12 to 154 V or open-circuit Converter disabled: –2 to +2 V The output response is shown in fig. 8a. Note: In systems consisting of several converters, this feature may be used to control the activation sequence by logic signals or to enable the power source to start up, before full load is applied. SD 0.1 Vo/Vo nom ton tf t off tr td on Fig. 8a Typical output response to the SD-signal. Option M: Interruption Time The interruption time thu is specified in the railway standard EN 50155:2017 clause 5.1.1.4: It is tested at the nominal battery voltage for interruption and short-circuit of the input. After such an event, the system is ready for another such event after 10 s. Fig. 8b shows the output voltage Vo with option M. thu = 10 ms (Class S2) in all other cases. For less critical applications, option M is not required (class S1, no interruption time). 0.1 Vo /Vo nom ton tr thu td on Vi Fig. 8b Typical output response to Vi If option M is not fitted, thu = 0 ms.

tech.support@psbel.com belfuse.com/power-solutions BCD.00791 Rev. AN, 10-Aug-2021 Page 11 of 18 RCM Series 150 / 300 W DC-DC Converters © 2021 Bel Power Solutions & Protection Option Q: ORing FET for Redundant Systems The outputs of 2 parallel connected converters are separated with ORing diodes (built by FETs). If one converter fails, the remaining one must be capable to still deliver the full power to the load. If more power is needed, the system may be extended to more parallel converters (n+1 re dundancy). Current sharing must be ensured by load lines of equal section and length. In addition, a slight droop characteristic of the output voltage and a negative temperature coefficient are helpful as well. To keep the losses as small as possible, the ORing diode is replaced by a FET. The voltage drop is approx. 22 mV (not dependent of Io). Note: In the case of a failing converter, the output voltage is maintained by the redundant converters. However, the failing item should be identified and replaced. We recommend the Out OK function (option D). Option F: Incorporated Fuse The railway standard EN 50155 disadvises fuses in the con verters. Consequently, the installer must preview an external fuse or circuit breaker. However, when this is not possible, an in corporated fuse is available (option F). This fuse is not accessible and will not trip, except if the converter is defect. Note: Converters with option F or option M are protected against input reverse polarity by a series diode. Table 5: Recommended external fuses (same as with option F) Converter Specification Ordering number 24RCM150 15 A fast acting BEL 0ADE (P) 9150 24RCM300 30 A fast acting BEL 0ADE (P) 9300 110RCM150 5 A fast acting Littelfuse 0507 005.MXEP 110RCM300 8 A fast acting Littelfuse 0507 008.MXEP Option K: Pluggable Connectors This option allows the use of pre-assembled pluggable connectors; for details see Accessories. Note: Female connectors must be ordered separately.

tech.support@psbel.com belfuse.com/power-solutions BCD.00791 Rev. AN, 10-Aug-2021 Page 12 of 18 RCM Series 150 / 300 W DC-DC Converters © 2021 Bel Power Solutions & Protection Electromagnetic Compatibility (EMC) Electromagnetic Immunity Table 6: Electromagnetic immunity (type tests). Corresponds or Exceeds EN50121-3-2:2016 and AREMA Phenomenon Standard Level Coupling mode 1 Value applied Waveform Source imped. Test procedure In oper. Perf. crit.2 Electrostatic discharge (to case) IEC/EN 61000-4-2 4 contact discharge 6000 Vp 1/50 ns 330 Ω 150 pF 10 pos. & 10 neg. discharges yes A air discharge 8000 Vp Electromagnetic field IEC/EN 61000-4-3 x antenna 20 V/m AM 80% / 1 kHz N/A 80 – 800 MHz yes A antenna

20 V/m

AM 80% / 1 kHz N/A 800 – 1000 MHz yes A

20 V/m 1400 – 2000 MHz

5 V/m 2000 – 2700 MHz

3 V/m 5100 – 6000 MHz

61000-4-4 3 capacitive, o/c ±2000 Vp bursts of 5/50 ns; 2.5/5 kHz over 15 ms; burst period: 300 ms 50 Ω 60 s positive 60 s negative transients per coupling mode yes A 3 i/c, +i/–i direct coupling Surges IEC/EN 61000-4-5 i/c ±2000 Vp 1.2 / 50 µs 42 Ω 0.5 μF 5 pos. & 5 neg. surges per coupling mode yes A +i/–i ±1000 Vp i/c, +i/–i ±2000 Vp 12 Ω 9 μF B Conducted disturbances IEC/EN 61000-4-6 3 i, o, signal wires 10 VAC (140 dBµV) AM 80% / 1 kHz 150 Ω 0.15 – 80 MHz yes A Power frequency magnetic field IEC/EN 61000-4-8 3 300 A/m 60 s in all 3 axis yes A 1 i = input, o = output, c = case 2 A = normal operation, no deviation from specs.; B = normal operation, temporary loss of function or deviation from specs possible

tech.support@psbel.com belfuse.com/power-solutions BCD.00791 Rev. AN, 10-Aug-2021 Page 13 of 18 RCM Series 150 / 300 W DC-DC Converters © 2021 Bel Power Solutions & Protection Electromagnetic Emissions All conducted emissions (fig. 9) have been tested as per EN 55011, group 1, class A. These limits are much stronger than requested in EN 50121-3-2:2016, table 2.1, and coin cide with EN 50121-4:2016, table 1.1. The values in fig. 9 are quasipeak values, which are always lower then peak values. The average values must respect a margin of 10 dBµV below the limits for quasipeak. Radiated emissions have been tested according to EN 55011, group 1, class A . These limits are similar to the requi re ments of EN 50121-3-2:2016 and EN 50121-4:2016, both calling up EN 61000-6-4+A1:2011, table 1. The tests were executed with horizontal and vertical polarization. The worse result is shown in fig. 10. Note: The highest frequency of the internal sources of EUT is less than 108 MHz. Hence, Radiated Measurement was made up to 1 GHz. Non-accredited measurement up to 6 GHz are available on request. dBµV 110RCM150-24DMQF; Vi = 110 V, Vo = 24 V; Io = 6.25 A Class A, 3-Oct-2016 JM211 EN 55011 A qp EN 55011 A av 0.2 0.5 1 2 5 10 20 MHz dBµV 110RCM300-24DMQF; Vi = 110 V, Vo = 24 V; Io = 12.5 A Class A, 20-Apr-2017 JM220 EN 55011 A av EN 55011 A qp 0.2 0.5 1 2 5 10 20 MHz Fig. 9a 110RCM150-24: Typ. disturbance voltage at the input (Vi = 110 V, Ii nom, resistive load, quasi peak and average) Fig. 9b 110RCM300-24: Typ. disturbance voltage at the input (Vi = 110 V, Ii nom, resistive load, quasi peak and average) 30 50 100 200 500 1000 MHz dBµV/m VUS EMC Labatory, 110RCM150-24DMQF; Vi = 110 VDC, Vo = 24 V / 6.25 A Testdistance 10 m, Class A, 3-Oct-2016; ESVS 30, Rhode & Schwarz JM212 dBµV/m VUS EMC Labatory, 300RCM150-24DMQF; Vi = 110 VDC, Vo = 24 V / 12.5 A Testdistance 10 m, Class A, 21-Apr-2017; ESVS 30, Rhode & Schwarz 30 50 100 200 500 1000 MHz dBµV/m VUS EMC Labatory, 300RCM150-24DMQF; Vi = 110 VDC, Vo = 24 V / 12.5 A Testdistance 10 m, Class A, 21-Apr-2017; ESVS 30, Rhode & Schwarz JM221 Fig. 10a 110RCM150-24: Typ. radiated disturbances in 10 m distance (Vi = 110 V, Ii nom, resistive load, quasi peak). Fig. 10b 110RCM300-24: Typ. radiated disturbances in 10 m distance (Vi = 110 V, Ii nom, resistive load, quasi peak).

tech.support@psbel.com belfuse.com/power-solutions BCD.00791 Rev. AN, 10-Aug-2021 Page 14 of 18 RCM Series 150 / 300 W DC-DC Converters © 2021 Bel Power Solutions & Protection Immunity to Environmental Conditions Table 7: Mechanical and climatic stress. Air pressure 800 – 1200 hPa Test method Standard Test Conditions Status Ad Low temperature start-up test EN 50155:2017, clause 13.4.4 IEC/EN 60068-2-1 Temperature, duration: - 40 °C, 2 h Not operating Performance test: +25 °C Be Dry heat test, cycle A EN 50155:2017, clause 13.4.5 IEC/EN 60068-2-2 Temperature: 70 °C Operating perf. crit. ADuration: 6 h Db 2 Cyclic damp heat test EN 50155:2017, clause 13.4.7 IEC/EN 60068-2-30 Temperature: 55 °C and 25 °C Not operating Cycles (respiration effect): 2 Duration: 2x 24 h Ka Salt mist test sodium chloride (NaCl) solution EN 50155:2017, clause 13.4.10 IEC/EN 60068-2-11 Temperature: 35 ±2 °C Converter not operatingDuration: 48 h - Functional random vibration test EN 50155:2017 clause 13.4.11.4 EN 61373:2010 clause 8, class B, body mounted 1 Acceleration amplitude: 0.1 gn = 1.01 m/s2 Operating perf. crit. A Frequency band: 5 – 150 Hz Test duration: 30 min (10 min in each axis) - Simulated long life testing EN 50155:2017 clause 13.4.11.2 EN 61373:2010 clause 9, class B, body mounted 1 Acceleration amplitude: 0.58 gn = 5.72 m/s2 Not operating Frequency band: 5 – 150 Hz Test duration: 15 h (5 h in each axis) - Shock test EN 50155:2017 clause 13.4.11.3 EN 61373:2010 clause 10, class B, body mounted 1 Acceleration amplitude: 5.1 gn Operating perf. crit. A Bump duration: 30 ms Number of bumps: 18 (3 in each direction) - Vibration sinusoidal AREMA Part. 11.5.1 class C, D, E, I, J Displacement amplitude: 0.3” (5 – 10 Hz) 0.07” (5 – 20 Hz) Operating perf. crit. A Acceleration amplitude: 1.5 gn = 14.7 m/s2 (10 – 200 Hz) Frequency: 5 – 200 Hz Test duration: 12 h (4 h in each axis) - Mechanical shock AREMA Part. 11.5.1 class C, D, E, I, J Acceleration amplitude: 10 gn = 98 m/s2 Operating perf. crit. A Bump duration: 11 ms Number of bumps: 18 (3 in each direction)

1 Body mounted = chassis of a railway coach

Table 8: Temperature specifications, valid for an air pressure of 800 – 1200 hPa (800 – 1200 mbar) Temperature EN 50155:2017 Class OT4 Unit Characteristics Conditions min max 10 minutes TA Ambient temperature Converter operating - 40 70 85 °CTC Case temperature 1 - 40 90 TS Storage temperature Not operational - 55 85 1 Measured at the measurement point TC ; see Mechanical Data. Reliability Table 9: MTBF Calculation method Model MTBF According to IEC 61709 / SN-29500 24 / 110RCM150-12 / -15 / -24 1 220 000 h 24 / 110RCM300-12 / -24 1 030 000 h

tech.support@psbel.com belfuse.com/power-solutions BCD.00791 Rev. AN, 10-Aug-2021 Page 15 of 18 RCM Series 150 / 300 W DC-DC Converters © 2021 Bel Power Solutions & Protection Mechanical Data Measuring point of case temperatureTC 164.5 152.5 94.9 484.5(4x) ø 29.5 6.1 11.7 68.2 36.1 29.5 6.3 67.5 36.1 RCM150 with option K Standard models RCM150 No Paint Zone for ground screw ø 10 mm Standard models RCM300 RCM300 with option K No Paint Zone for ground screw ø 10 mm 116 188.6 176.6 121.9 76.45 ø 4 .5 (4x) Measuring point of case temperatureTC JM205b 11.15 40.9 75.45 13.1 40.9 74.5 Fig. 11a Case of RCM150 (RCM01) weight approx. 520 g, Aluminum, EP-powder coated Fig. 12a Case of RCM300 (RCM02) weight approx. 820 g, Aluminum, EP-powder coated 6.4 5.9 pluggable connectorJM247 17.7 pluggable connector JM246 Fig. 11b Plugged connector for RCM150 with option K Fig. 12b Plugged connector for RCM300 with option K

tech.support@psbel.com belfuse.com/power-solutions BCD.00791 Rev. AN, 10-Aug-2021 Page 16 of 18 RCM Series 150 / 300 W DC-DC Converters © 2021 Bel Power Solutions & Protection Safety and Installation Instruction Connectors and Pin Allocation of RCM150 - Input connector, 3 pins: Wago 236-403: Vi+, Vi–, PE; wire section: 0.08 – 2.5 mm2, 28 – 12 AWG; with option K: Phoenix Contact 1923762 - Output connector, 2 pins: Wago 236-402: Vo+, Vo–; wire section: 0.08 – 2.5 mm2, 28 –12 AWG with option K: Phoenix Contact 1923759 - Auxiliary connector: Phoenix Contact 1713883; pin allocation see fig. 13. Vo+ Vo– R R+ R R– n.c. n.c. OK OK1 OK OK2 n.c. n.c. SD0 SD Vi– Vi+ PE Pin 1 Fig. 13 Pin allocation of RCM150 Connectors and Pin Allocation of RCM300 - Input connector, 3 pins: Wago 745-353: Vi–, Vi+, PE wire section: 0.2 – 6 mm2, 24 – 10 AWG with option K: Weidmüller 1048500000 - Output connector, 2 pins: Wago 745-602/006, Vo–, Vo+ wire section: 0.2 – 16 mm2, 24 – 10 AWG with option K: Weidmüller 1048390000 - Auxiliary connector: Phoenix Contact 1713883; pin allocation see fig. 14. R R+ R R– n.c. n.c. OK OK1 OK OK2 n.c. n.c. SD0 SD Vo+ Vo– Vi– Vi+ PE Pin 1 Fig. 14 Pin allocation of RCM300 Installation Instruction These converters are components, intended exclusively for inclusion by an industrial assembly process or by a professionally competent person. Installation must strictly follow the national safety regulations in respect of the enclosure, mounting, creepage distances, clearances, markings and segregation requirements of the end-use application. Connection to the system shall only be effected with cables with suitable wire section. The auxiliary connector shall be connected via the suitable female connector; see Accessories. Other installation methods may not meet the safety requi rements. Check that PE is safely connected to protective earth. No fuse is incorporated in the converter (except for option F). An external circuit breaker or a fuse in the wiring to one or both input pins. Do not open the converters, or the warranty will be invalidated. Make sure that there is sufficient airflow available for convection cooling and that the temperature of the bottom plate is within the specified range. This should be verified by measuring the case temperature at the specified measuring point, when the converter is operated in the end-use application. TC max should not be exceeded. Ensure that a failure of the converter does not result in a hazardous condition. Standards and Approvals The RCM Series converters are approved according to the last edition of IEC/EN 62368-1 and UL/CSA 62368-1. They have been evaluated for:

• Class I equipment
• Building in
• Double or reinforced insulation based on 250 VAC or 240 VDC between input and output, and between input and the relay contacts (OK0, OK1, OK2)
• Pollution degree 2 environment. The converters are subject to manufacturing surveillance in accordance with the above mentioned safety standards and with ISO 9001:2015, IRIS ISO/TS 22163:2017 certified quality and business management system..

tech.support@psbel.com belfuse.com/power-solutions BCD.00791 Rev. AN, 10-Aug-2021 Page 17 of 18 RCM Series 150 / 300 W DC-DC Converters © 2021 Bel Power Solutions & Protection Cleaning Liquids and Protection Degree The converters are not hermetically sealed. In order to avoid possible damage, any penetration of liquids shall be avoided. The converters correspond to protection degree IP 30. Railway Applications The RCM Series converters have been designed observing the railway standards EN 50155:2017, EN 50121-3-2:2016, EN 50124-1:2017 and AREMA. All boards are coated with a protective lacquer. The converters comply with the fire & smoke standard EN 45545:2016, HL1 to HL3. Insulation Test The electric strength test is performed in the factory as routine test in accordance with EN 50514, EN 50155:2017 and AREMA. It should not be repeated in the field, and the Company will not honor warranty claims resulting from incorrectly executed electric strength tests. Table 10: Isolation Characteristics Input to Output 1 Input to Case Output to Case OK contacts to Unit Input Case Outputs Insulation resistance 2 >300 >300 >300 >300 >300 >300 MΩ

1 Pretest of subassemblies in accordance with IEC/EN 62368-1

2 Tested at 500 VDC

3 No safety isolation requirements applicable between OK contacts to chassis and OK contacts to output per IEC 62368-1

tech.support@psbel.com belfuse.com/power-solutions BCD.00791 Rev. AN, 10-Aug-2021 Page 18 of 18 RCM Series 150 / 300 W DC-DC Converters © 2021 Bel Power Solutions & Protection Accessories Female Connectors A suitable female auxiliary connector HZZ00145-G (Phoenix Contact 1790344) is available; see fig. 15. Wire section: 0.2 – 1.5 mm2, 24 – 16 AWG. Fig. 15 Female connector 14 pins, HZZ00145-G (Phoenix Contact 1790344) For converters RCM150 with option K, use (see fig. 16):

• HZZ00300-G (3 poles, Phoenix Contact 1942167)
• HZZ00301-G (2 poles, Phoenix Contact 1942154). Wire section: 0.2 – 2.5 mm2, 24 – 12 AWG. For converters RCM300 with option K, use (see fig. 17):
• HZZ00303-G (3 poles, Weidmüller 1060580000)
• HZZ00302-G (2 poles, Weidmüller 1060550000). Wire section: 0.5 – 10 mm2, 24 – 8 AWG Fig. 16 Female connectors for RCM150 with option K Fig. 17 Female connectors for RCM300 with option K DIN-Rail Mounting Bracket DMB A suitable DIN-Rail mounting bracket HZZ00625-G is available; see Fig. 18. Fig. 18 DIN-Rail mounting bracket for RCM series HZZ00625-G NUCLEAR AND MEDICAL APPLICATIONS - These products are not designed or intended for use as critical components in life support systems, equipment used in hazardous environments, or nuclear control systems. TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on the date manufactured. Specifications are subject to change without notice.