MEAN WELL RKP-6K1UT-24 is a 24 V, 1U rack AC/DC power supply system with AC terminal blocks. Three RCP-2000-24 rectifiers operate in parallel, providing a listed maximum of 240 A / 5760 W under the applicable input, cooling and load conditions.
Product Datasheet
Download MEAN WELL RKP-1U Datasheet (PDF)
The RKP-1U section is on PDF pages 13, 14, 15, 16, 17, 18, 33, 34, 35, 36, 37. Refer to the complete mechanical drawings and notes when planning installation.
System Configuration and Output
| Nominal DC output |
24 V |
| Installed rectifiers |
3 × RCP-2000-24 |
| Maximum output current |
240 A |
| Maximum output power |
5760 W |
| Per-module rating |
24 V / 80 A / 1920 W; output current range 0–80 A per rectifier. |
| Per-module adjustment / accuracy |
21–28 V adjustment; tolerance ±1%; line regulation ±0.5%; load regulation ±0.5%. |
| Per-module ripple / conversion |
200 mVp-p maximum; typical efficiency 90.5% and power factor 0.98 at 230 VAC / full load. |
| Timing |
RCP-2000 set-up 1500 ms and rise time 60 ms at 230 VAC / full load. Hold-up: 16 ms at 230 VAC / 75% load, 10 ms at 230 VAC / full load. |
All installed rectifier outputs are paralleled. Active current sharing and hot-swap capability support distributed and redundant system arrangements, but redundancy reserve reduces usable load capacity. If component tolerances cause successive overload limiting at full parallel load, the catalogue recommends reducing total output current by 10%. With more than one rack connected, ripple may be higher at light load and returns to the normal level above 10% output load.
The RKP-1U platform describes up to three rack shelves / nine RCP-2000 rectifiers and an 18 kW class expansion. The actual total is limited by the selected output voltage, number of power modules, CMU positions, input and thermal conditions; it is not a guaranteed capacity for every shelf configuration.
Input, Protection and Derating
| Input voltage / frequency |
90–264 VAC, 47–63 Hz. For the installed RCP-2000 modules, the normal specified DC range is 250–320 VDC; operation at 320–370 VDC requires confirmation from MEAN WELL. |
| AC current / leakage |
The rack system table gives 16 A at 115 VAC and 11 A at 230 VAC per module. Rack-system leakage current is <3.5 mA at 230 VAC. The individual rectifier specification separately lists 10 A at 230 VAC and leakage <1.1 mA; size system wiring to the applicable complete-system rating. |
| Inrush / surge |
Installed rectifier cold-start inrush: 50 A. The rectifier feature list states tolerance of a 300 VAC input surge for 5 seconds; this is not a continuous input rating. |
| Overload / short-circuit protection |
RCP-2000 overload range: 105–125% of rated output power, with constant-current limiting followed by output shutdown after 5 seconds. Re-power to recover. The module features include short-circuit protection. |
| Overvoltage / overtemperature |
RCP-2000-24 overvoltage threshold: 29.5–35 V; output shuts down and requires re-powering. Overtemperature shuts down the output and automatically recovers after cooling. |
The RCP-2000 thermal curve is for horizontal installation: full rated load through 50°C, falling to 50% at 70°C. Its operating range starts at −35°C, with −35 to −25°C marked for 230 VAC input only. Do not extend the installed module’s cold-temperature capability solely from the bare-rack temperature table.
At 60 Hz input, full rectifier output is available over the 180–264 VAC portion of the static-characteristic curve. Per-module low-line limits: 115 VAC: 1536 W / 64 A; 100 VAC: 1440 W / 60 A; 90 VAC: 1248 W / 52 A. Apply input and ambient derating together, then multiply only by the number of installed modules.
Built-in fans with fan-speed control cool the rectifiers; preserve the airflow indicated on the drawings. The rectifier includes active PFC, an output OR-ing FET, hot-swap operation and up to 25 W/in³ module power density. These are installed-module features, not independent power conversion performed by an empty rack. Conformal coating is an optional rectifier treatment, not specified by the rack order code.
Rack Control Connections and Status
| CN500 interface |
Right-angle female 25-position D-type connector. 1 / 7 / 16: remote ON/OFF; 2 / 8 / 17: AC OK; 3 / 9 / 18: DC OK; 4 / 10 / 19: PV; 5 / 11 / 20: temperature alarm; 6 / 12 / 21: fan fail, for rectifiers A / B / C respectively. Pins 13: +5V-AUX; 14: +12V-AUX; 15: GND-AUX; 22: +S; 23: −S; 24: +V signal; 25: −V signal. |
| Remote ON/OFF |
For channels A / B / C, short CN500 pin 1 / 7 / 16 respectively to pin 13 (+5V-AUX) for ON; open for OFF. Control channels together or individually as required. |
| Auxiliary outputs |
5 V / 0.3 A (4.5–5.5 V) and 12 V / 0.8 A (10.8–13.2 V), referenced to GND-AUX pin 15. Outputs include OR-ing diodes and are not switched by remote ON/OFF. GND-AUX is isolated from the main +V and −V. |
| Remote sense / local sense |
Connect +S pin 22 and −S pin 23 to the load using a twisted pair; compensation is up to 0.5 V. For local sensing, link 22 to 24 and 23 to 25. Pins 24 and 25 are signal references, not load-current connections. |
Voltage programming uses CN500 PV pins 4 / 10 / 19 relative to pin 25 (−V signal). External control is 0–5 V for the plotted 90–110% nominal-output range; marked points include 1.5 V for 90%, 3 V for 100% and 4.5 V for 110%. Follow the full curve, including its end regions. Above 100% output voltage, reduce load current; the graph shows 90% rated current at 110% voltage.
AC OK / AC LED: input ≥87 Vrms gives 0–0.5 V and green / output ON; input ≤75 Vrms gives 4.5–5.5 V and red / output OFF. DC OK / DC LED: output above the 80% ±5% rated-voltage threshold is low / green; below the threshold is high / red. The DC-low alarm table still shows the PSU output ON; it is not an automatic shutdown declaration.
Temperature status: both internal thermal switches closed gives low / green and output ON; either switch open gives high / red and output OFF. Fan-fail is high on a fan fault and low during normal operation. Other isolated control/status signals are referenced to GND-AUX; do not substitute the main −V reference.
JK1 is a double-layer RJ45 connection: pin 1 DA and pin 2 DB are non-isolated differential parallel-control signals; pin 3 is −V signal reference; pin 4 CONTROL is the remote-PMBus control signal; pin 5 NC; pin 6 SDA; pin 7 SCL; pin 8 GND-AUX. The bus follows PMBus revision 1.1, up to 100 kHz. Do not use the signal-reference pins as load returns.
Mechanical Installation and Module Interface
| Dimensions |
350.8 × 482.6 × 44 mm (L × W × H), with mounting brackets; body width 440 mm. The shelf height is 1U. |
| Catalogue unit weight |
14.1 kg (14100 g), catalogue packing reference per unit; not a measured net or shipping weight. |
| AC and chassis installation |
3 AC terminal blocks, with FG, AC/N and AC/L identified on the rear drawing. Connect protective earth to FG. Follow the drawing for the selected I or T version; AC connections are separate for the module positions. |
| Mounting screws |
Three M5 mounting positions on each side; maximum screw penetration 6 mm. Follow the drawing’s 125 mm longitudinal spacing and dimensional references. The rack drawing recommends 10 kgf·cm tightening torque. General drawing tolerance is ±0.5 mm. |
Use the drawing on PDF page 36 for the actual bracket width, rear connector arrangement and module positions. Maintain access to module handles and unrestricted fan airflow; the rectifier’s 41 mm height is distinct from the shelf’s 44 mm overall height.
The installed RCP-2000 interface is Positronic PCIM34W13M400A1; the printed mating reference is PCIM34W13F400A1. Select the correct mating and wire assembly; this connector reference is not a statement that a separate spare connector is included.
Rectifier CN501: +V pins 1–4; −V pins 5–8; pin 9 −V signal, 10 +V signal, 11 PV, 12 DA, 13 DB, 14 +S, 15 −S; address A0–A4 on 16 / 18 / 19 / 20 / 21; pin 17 remote ON/OFF, 22 NC, 23 SDA, 24 SCL, 25 AC OK, 26 DC OK, 27 temperature alarm, 28 fan fail, 29 +5V-AUX, 30 +12V-AUX, 31 GND-AUX, 32 FG, 33 AC/L and 34 AC/N. The module status outputs are isolated, referenced to GND-AUX and limited to 10 mA sourcing. Rack CN500 numbers are different from these module-interface numbers.
Safety, EMC and Operating Conditions
The rack power-system specification lists UL 62368-1, CSA C22.2 No. 62368-1, TUV BS EN/EN 62368-1 and EAC TP TC 004 approvals. Dielectric withstand: input–output 3 kVAC, input–FG 2 kVAC and output–FG 0.7 kVDC. Insulation resistance for these paths: 100 MΩ at 500 VDC, 25°C and 70% RH.
For the rack power system, BS EN/EN55032 (CISPR32) conducted and radiated emissions are Class A. Harmonic current and flicker are listed under BS EN/EN61000-3-2 and -3-3. Immunity: BS EN/EN55035 and BS EN/EN61000-6-2; ESD level 3 / 8 kV air and level 2 / 4 kV contact; RF, EFT and conducted immunity level 3; surge level 4 / 4 kV line–earth and level 3 / 2 kV line–line; magnetic field level 4. Voltage-dip tests: >95% for 0.5 periods and 30% for 25 periods; interruptions >95% for 250 periods.
Working humidity: 20–90% RH, non-condensing. Storage: −40 to +85°C, 10–95% RH, non-condensing. Temperature coefficient: ±0.03%/°C over 0–50°C. Vibration: 10–500 Hz, 2 G, 10 minutes per cycle, 60 minutes along each X, Y and Z axis. Operating temperature is limited by the installed rectifier and controller as well as the rack.
Above 2000 m, reduce allowable ambient temperature by 5°C per 1000 m for fan-cooled models, or 3.5°C per 1000 m for fanless models; this rule does not establish an unrestricted maximum operating altitude. The product is a component for incorporation into final equipment. EMC tests use a 720 × 360 × 1 mm metal plate, and the final equipment must be rechecked.
Unless specified otherwise, measurements use 230 VAC, rated load and 25°C. Ripple/noise uses 20 MHz bandwidth and a 12-inch twisted pair terminated with 0.1 µF and 47 µF in parallel. Tolerance includes initial setting, line and load regulation. The catalogue lists a 5-year warranty. Applications include industrial automation, distributed power, telecommunications, redundant power, EV-charger and constant-current systems, subject to complete-system requirements.
