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melcher the power partners. rcm series data sheet 150 /300 w dc-dc converters bcd.00791 rev ae, 28-mar-2018 page 1 of 14 features ? rohs lead-free-solder product 2 input voltage ranges, covering all railway batteries single output, 12 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 compliant to en 50155, en 50121-3-2, arema fire and smoke: compliant to en 45545 and nfpa 130 warranty 5 years. description the rcm series converters are reliable power supplies for railway and transportation systems. there are 2 input voltage ranges covering all common railway batteries. the output delivers 150 or 300 w at 12 or 24 v. the converters are designed for chassis mounting and exhibit a closed housing with cooling openings. many options are available, such as an output oring fet for redundant operation, output voltage adjustment, interruption time of 10 ms (class st2), shutdown input, and an output voltage monitor controlling a relay (change-over contact). table of contents page page copyright ? 2018, bel power solutions inc. all rights reserved. description ............................................................................ 1 model selection .................................................................... 2 functional description .......................................................... 3 electrical input data .............................................................. 4 electrical output data ........................................................... 6 description of options ......................................................... 8 electromagnetic compatibility (emc) .................................. 9 immunity to environmental conditions .............................. 11 mechanical data ................................................................. 12 safety and installation instructions .................................... 13 accessories ........................................................................ 14 safety-approved to the latest edition of iec/en 60950-1 and ul/csa 60950-1 1 pending 1 1
melcher the power partners. rcm series data sheet 150 /300 w dc-dc converters bcd.00791 rev ae, 28-mar-2018 page 2 of 14 model selection table 1: model selection input voltage output power efficiency 2 model options v i min 1 v i cont v i max 1 v o nom i o nom p o nom t a = 25 c, v i nom, i o nom , v o nom , only option d fitted. part number description operating input voltage v i cont (continuously): 16.8 ? 45 vdc .......................................................... 24 50.4 ? 137.5 vdc .................................................... 110 series ........................................................................... rcm output power: 150 w .................................................................... 150 300 w .................................................................... 300 nominal output voltage: 12 v .......................................................................... -12 24 v .......................................................................... -24 auxiliary functions and options: out ok, output voltage adjust, shutdown 1 .................. d interruption time .......................................................... m oring fet ................................................................... q fuse built-in ................................................................. f pluggable connectors ................................................ k 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. example: 110 rcm150-24dmq: 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 t a = ? 40 to 70 c, rohs-compliant for all six substances. product marking type designation, applicable safety approval and recognition marks, ce mark, pin allocation, and product logo. 110 rcm 150 -24 d m q f k 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. available combinations of options: 24/110rcmxxx-xx (k) 24/110rcmxxx-xxd (k) 24/110rcmxxx-xxdf (k) 24/110rcmxxx-xxdmq (k) 24/110rcmxxx-xxdmqf (k)
melcher the power partners. rcm series data sheet 150 /300 w dc-dc converters bcd.00791 rev ae, 28-mar-2018 page 3 of 14 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. fig. 1 block diagram 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 c y sd0 sd c y c y pe opt. q fuse (option f) ok0 + c hu opt. m input filter primary control logic ntc 1 series diode, only fitted with opt. f or m 1 output filter ok2 secondary control logic r? r r r+ isolated driver ntc ok1 2 2 bipolar suppressordiode with opt. f or m
melcher the power partners. rcm series data sheet 150 /300 w dc-dc converters bcd.00791 rev ae, 28-mar-2018 page 4 of 14 electrical input data general conditions: ? t a = 25 c, unless t c is specified. table 2a: input data of rcm150 input 24rcm150 110rcm150 unit characteristics conditions min typ max min typ max v i cont i o = 0 ? i o max 16.8 (24) 45.0 50.4 (110) 137.5 v operating input voltage c o ntinuous t c min ? t c max v i 2s for 2 s without shutdown 14.4 50.4 43.2 154 v i nom nominal input voltage 24, (36) (72), (96), 110 v i abs input voltage limits 3 s without damage 0 55 0 165 i i typical input current v i nom , i o nom 6.8 1.5 a p i 0 no-load input power v i min ? v i max , i o = 0 2.5 4 4 2 6w p i sd idle input power v i min ? v i max , v sd = 0 v 0.7 1.5 0.7 2 1.5 c i input capacitance 1 40 10 f r i input resistance 100 100 m i inr p peak inrush current v i = v i max , p o nom 75 100 a t inr d duration of inrush current 0.5 0.5 ms t on start-up time at switch on 0 v i min, p o nom 1000 1000 start-up time after removal v i min , p o nom 300 300 of shutdown v sd = 0 5 v table 2b: input data of rcm300 input 24rcm300 110rcm300 unit characteristics conditions min typ max min typ max v i cont i o = 0 ? i o max 16.8 (24) 45.0 50.4 (110) 137.5 v operating input voltage c o ntinuous t c min ? t c max v i 2s for 2 s without shutdown 14.4 50.4 43.2 154 v i nom nominal input voltage 24 (36) (72) (96) 110 v i abs input voltage limits 3 s without damage 0 55 0 165 i i typical input current v i nom , i o nom 13.9 3 a p i 0 no-load input power v i min ? v i max , i o = 0 4 6 4 6 w p i sd idle input power v i min ? v i max , v sd = 0 v 1.5 1.5 c i input capacitance 1 6 1 2 f r i input resistance 140 140 m i inr p peak inrush current v i = v i max , p o nom 120 150 a t inr d duration of inrush current 0.5 0.5 ms t on start-up time at switch on 0 v i min, p o nom 1000 1000 start-up time after removal v i min , p o nom 300 300 of shutdown v sd = 0 5 v 1 not smoothed by the inrush current limiter at start-up (for inrush current calculation) 2 typ. value at v i max . at lower v i , the idle and low-load input power are smaller.
melcher the power partners. rcm series data sheet 150 /300 w dc-dc converters bcd.00791 rev ae, 28-mar-2018 page 5 of 14 vi+ vi? vo+ vo? + l ext r ext jm085d c ext load c i r i converter r i 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 disables the converter to avoid any damage. inrush current and stability with long supply lines the converter operates with relatively small input capacitance c i 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 l ext , an additional external capacitor c ext connected across the input pins improves the stability and prevents oscillations; see fig. 2. actually, an rcm series converter with its load acts as negative resistor r i , because the input current i i rises, when the input voltage v i is decreased. it tends to oscillate with a resonant frequency determined by the line inductance l ext and the input capacitance c i + c ext , damped by the resistor r ext . the whole system is not linear at all and eludes a simple calculation. one basic condition is given by the formula: l ext p o max d v i c i + c ext > ? ? ? ? ? ? ? ? ? ? ( r i = ? ? ? ) r ext v i min 2d i i r ext is the series resistor of the voltage source including supply lines. if this condition is not fulfilled, the converter may fig. 2 input configuration table 3: recommended values for the capacitor c ext v b nom rc150 rcm300 rated voltage 24 v 1500 f 3000 f 40 v 36 v 1000 f 2000 f 63 v 72 v 220 f 440 f 125 v 110 v 100 f 200 f 200 v fig. 3b efficiency versus v i and p o (110rcm150-24dmq) 60 70 80 90 0.4 0.8 p o / p o nom 0 jm210b 100 [%] 0.6 0.2 v i = 50 v v i = 110 v 110rcm150-24dmq v i = 137 v 60 70 80 90 0.4 0.8 p o / p o nom 0 jm217 100 [%] 0.6 0.2 v i = 50 v v i = 110 v 110rcm150-12dmq v i = 137 v fig. 3a efficiency versus v i and p o (110rcm150-12dmq) 60 70 80 90 0.4 0.8 p o / p o nom 0 jm218 100 [%] 0.6 0.2 v i = 50 v v i = 110 v 110rcm300-24dmq v i = 137 v fig. 3c efficiency versus v i and p o (110rcm300-24dmq) not reach stable operating conditions. worst case conditions are at lowest v i and highest output power p o . recommended values for c ext for different batteries are listed in table 3, which should allow for stable operation up to an input inductance of 2 mh. c i is specified in table 2. efficiency the efficiency depends on the model and on the input voltage.
melcher the power partners. rcm series data sheet 150 /300 w dc-dc converters bcd.00791 rev ae, 28-mar-2018 page 6 of 14 electrical output data general conditions: ? t a = 25c, unless t c is specified. ? r input not connected table 4a: output data of rcm150 output 12 v 24 v unit characteristics conditions min typ max min typ max v o output voltage 1 v i nom , 0.5 i o nom 11.88 12 12.12 23.76 24 24.24 v v ow worst case output v i min ? v i max 11.64 12.36 23.28 24.72 voltage t c min ? t c max , 0 ? i o nom v o droop voltage droop ?20 ?40 mv/a v o l overvoltage shutdown 6 14 28 v o p overvoltage protection 2 14.3 15 15.8 28.5 30 31.5 v i o nom nominal output current 12.5 6.25 a i o l output current limit t c min ? t c max 13.0 15 6.5 7.2 v o output switch. frequ. v i nom , i o nom 40 80 mv pp noise 3 total incl. spikes bw = 20 mhz 60 120 v o d dynamic voltage v i nom 700 1000 load deviation 5 0.1 ? i o nom t d 4 regulation recovery time 5 5 ms v o (ntc) 0 ? i o nom, t c min ? t c max ?0.02 0 ?0.02 0 % /k table 4b: output data of rcm300 output 12 v 24 v unit characteristics conditions min typ max min typ max v o output voltage 1 v i nom , 0.5 i o nom 11.88 12 12.12 23.76 24 24.24 v v ow worst case output v i min ? v i max 11.64 12.36 23.28 24.72 voltage t c min ? t c max , 0 ? i o nom v o droop voltage droop ?20 ?40 mv/a v o l overvoltage shutdown 6 14 28 v o p overvoltage protection 2 14.3 15 15.8 28.5 30 31.5 v i o nom nominal output current 25 12.5 a i o l output current limit t c min ? t c max 27 30 13.5 15 v o output switch. frequ. v i nom , i o nom 60 80 mv pp noise 3 total incl. spikes bw = 20 mhz 80 120 v o d dynamic voltage v i nom 100 1200 load deviation 5 0.1 ? i o nom t d 4 regulation recovery time 5 5 ms v o (ntc) 0 ? i o nom, t c min ? t c max ?0.02 0 ?0.02 0 % /k 1 if the output voltage is increased above v o nom through r-input control, the output power should be reduced accordingly, so that p o max and t c 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 v o returns to 1% of v o ; see fig. 4. 5 no overshoot at switch on. 6 output overvoltage protection by an electronic circuitry.
melcher the power partners. rcm series data sheet 150 /300 w dc-dc converters bcd.00791 rev ae, 28-mar-2018 page 7 of 14 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. fig. 4 typical dynamic load regulation of output voltage v od v od t d t d v o 1 % v o 1 % t t 10 s 10 s v o 0 0.5 1 i o / i o nom 05102c 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. 5. 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 overtempera- ture. the converter automatically recovers, when the tempera- ture drops below the limit. see fig. 5. the relationship between t a and t c depends heavily upon the conditions of operation and integration into a system. caution: the installer must ensure that under all operating con- ditions t c remains within the limits stated in table 8. fig. 6 rectangular current limitation v o v o nom 0.98 0.5 0 0.5 1.0 i ol i o i o no m jm219 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 selv (safety extra low voltage) 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 . le d indicator the converters exhibit a green led "out ok", signaling that the output voltage is within the specified range. 0 60 120 180 240 50 60 70 80 90 100 p o [w] t a [c] 300 110rcm300 jm245 t c max convection cooling 110rcm150 fig. 5 typical output power derating versus temperature; vertical mounting position, free convection cooling.
melcher the power partners. rcm series data sheet 150 /300 w dc-dc converters bcd.00791 rev ae, 28-mar-2018 page 8 of 14 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, v o = v o nom . the converter allows for adjusting the output voltage in the range of 80 to 105% of v o nom . the adjust is accomplished by an external resistor r ext1 or r ext2 , 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 v o nom : v o r ext1 ? ? v o nom ? v o note: r ext1 = 0 ? v o to 80%. or: between the r-pin and r+ to adjust the output voltage to a value greater than v o nom : ( v o ? 2.5 v) r ext2 ? ra 2.5 v ( v o / v o nom ? 1) note: r ext2 = 0 ? v o to 105%. ra = 300 k ? v o nom = 12 v ra = 680 k ? v o nom = 24 v output voltage monitor (d) the output voltage v o is monitored. when v o is in range, a relay with a change-over contact is activated, connecting ok0 with ok1. note: the trigger levels are typ. 5 % of v onom (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 required, 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 fig. 7 output voltage control via r-input the output response is shown in fig. 8. 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. option m: interruption time the interruption time t hu 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. 8 shows the output voltage v o with option m. t hu = 10 ms (class s2) in all other cases. for less critical applications, option m is not required (class s1, no interruption time). 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 redundancy). 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 i o ). 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 incorporated 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. fig. 8 typical output response to the sd-signal. if option m is not fitted, t hu = 0 ms. 0 t 0 sd 1 0.1 1 v o / v o nom t on t f jm193a t off t r t hu t d on r? r+ vo? 4 k ? v ref = 2.5 v r ext1 r ext 2 jm244 vi? vi+ + control logic bias ra 15.8 k ? r
melcher the power partners. rcm series data sheet 150 /300 w dc-dc converters bcd.00791 rev ae, 28-mar-2018 page 9 of 14 option k: pluggable connectors this option allows the use of preassembled pluggabale connectors; for details see accessories . note: female connectors must be ordered separately. table 5: recommended external fuse s (same as with option f) converter specification ordering number 24rcm150-12, -24 15 a fast acting bel 0ade (p) 15-r 24rcm300-12, -24 25 a fast acting bel 0ade (p) 25-r 110rcm150-12, -24 5 a fast acting littelfuse 0507 005.mxep 110rcm300-12, -24 8 a fast acting littelfuse 0507 008.mxep electromagnetic compatibility (emc) electromagnetic immunity table 6: electromagnetic immunity (type tests) phenomenon standard level coupling value waveform source test in perf. mode 1 applied imped. procedure oper. crit. 2 electrostatic iec/en 4 3 contact discharge 6000 v p 1/50 ns 330 ? ? ? ?
melcher the power partners. rcm series data sheet 150 /300 w dc-dc converters bcd.00791 rev ae, 28-mar-2018 page 10 of 14 30 50 100 200 500 1000 mhz dbv/m 10 20 30 40 0 60 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 50 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 coincide 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 dbv below the limits for quasipeak. fig. 10a 110rcm150-24: typ. radiated disturbances in 10 m distance (v i = 110 v, i i nom , resistive load, quasi peak). fig. 9a 110rcm150-24: typ. disturbance voltage at the input (v i = 110 v, i i nom , resistive load, quasi peak and average) 0 dbv 20 40 60 80 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 0 dbv 20 40 60 80 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 fig. 9b 110rcm300-24: typ. disturbance voltage at the input (v i = 110 v, i i nom , resistive load, quasi peak and average) fig. 10b 110rcm300-24: typ. radiated disturbances in 10 m distance (v i = 110 v, i i nom , resistive load, quasi peak). radiated emissions have been tested according to en 55011, group 1, class a . these limits are similar to the requirements 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. 30 50 100 200 500 1000 mhz dbv/m 10 20 30 40 0 60 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 50 jm221
melcher the power partners. rcm series data sheet 150 /300 w dc-dc converters bcd.00791 rev ae, 28-mar-2018 page 11 of 14 immunity to environmental conditions table 7: mechanical and climatic stress. air pressure 800 ? 1200 hpa test method standard t est conditions conv. st atus ad low temperature en 50155:2017, clause 13.4.4 temperature, duration ?40 c, 2 h not operating start-up test iec/en 60068-2-1 performance test +25 c be dry heat test, en 50155:2017, clause 13.4.5 temperature: 70 c operating cycle a iec/en 60068-2-2 duration: 6 h perf. crit. a db 2 cyclic damp heat en 50155:2017, clause 13.4.7 temperature: 55 c and 25 c not operating test iec/en 60068-2-30 cycles (respiration effect): 2 duration: 2 o 4
melcher the power partners. rcm series data sheet 150 /300 w dc-dc converters bcd.00791 rev ae, 28-mar-2018 page 12 of 14 6.4 5.9 pluggable connector jm247 measuring point of case temperature t c 164.5 96 152.5 78 94.9 48 4.5 (4x) 6 ? 6 29.5 6.1 11.7 68.2 36.1 jm203b 29.5 6.3 11 67.5 36.1 rcm150 with option k standard models rcm150 98 116 188.6 176.6 121.9 76.45 ?4 .5 ( 4 x) 12 measuring point of case temperature t c jm205b 11.15 40.9 75.45 7 38 12 13.1 40.9 74.5 7 38 standard models rcm300 rcm300 with option k mechanical data dimensions in mm. european projection 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 17.7 pluggable connector jm246 fig. 12b plugged connector for rcm300 with option k fig. 11b plugged connector for rcm150 with option k
melcher the power partners. rcm series data sheet 150 /300 w dc-dc converters bcd.00791 rev ae, 28-mar-2018 page 13 of 14 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 mm 2 , 28 ? 12 awg; with option k: phoenix contact 1923762 - output connector, 2 pins: wago 236-402: vo+, vo?; wire section: 0.08 ? 2.5 mm 2 , 28 ?12 awg with option k: phoenix contact 1923759 - auxiliary connector: phoenix contact 1713883; pin allocation see fig. 13. - output connector, 2 pins: wago 745-602/006, vo?, vo+ wire section: 0.2 ? 16 mm 2 , 24 ? 10 awg with option k: weidmller 1048390000 - auxiliary connector: phoenix contact 1713883; pin allocation see fig. 14. 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. t c 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 60950-1 and ul/csa 60950-1. 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. 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 mm 2 , 24 ? 10 awg with option k: weidmller 1048500000 fig. 14 pin allocation of rcm300 vo+ vo? r r+. rr ? n.c. n.c. ok ok1 ok ok2 n.c. n.c. sd0 sd vi? vi+ pe r r+ rr ? n.c. n.c. ok ok1 ok ok2 n.c. n.c. sd0 sd vo+ vo? vi? vi+ pe table 10: isolation characteristic input to output ok contacts to unit output 1 case+output to case input case outputs electric factory test >1 s 4.2 2.86 2 2.86 2.86 2.86 2.86 kvdc strength ac test voltage equivalent 3.0 2.0 2.0 2.0 2.0 2.0 kvac test to actual factory test insulation resistance >300 3 >300 3 >300 >300 >300 >300 m ?
melcher the power partners. rcm series data sheet 150 /300 w dc-dc converters bcd.00791 rev ae, 28-mar-2018 page 14 of 14 the converters are subject to manufacturing surveillance in accordance with the above mentioned ul standards and with iso 9001. 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, and arema. all boards are coated with a protective lacquer. accessories female connectors a suitable female auxiliary connector hzz00145-g (phoenix contact 1790344) is available; see fig. 15. wire section: 0.2 ? 1.5 mm 2 , 24 ? 16 awg. the converters comply with the fire & smoke standard en 45545:2013 + a1:2015, 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. nuclear and medical applications - these products are not designed or intended for use as critical components in life support s ystems, equipment used in hazardous environments, or nuclear control systems. technical revisions - the appearance of products, including safety agency certifications pictured on labels, may change dependi ng on the date manufactured. specifications are subject to change without notice. copyright ? 2018, bel power solutions inc. all rights reserved. belfuse.com/power-solutions 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 mm 2 , 24 ? 12 awg. fig. 16 female connectors for rcm150 with option k for converters rcm300 with option k, use (see fig. 17): hzz00303-g (3 poles, weidmller 1060580000) hzz00302-g (2 poles, weidmller 1060550000). wire section: 0.5 ? 10 mm 2 , 24 ? 8 awg. fig. 17 female connectors for rcm300 with option k

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