MEAN WELL PSC-100B-C is an AC/DC power supply with battery charger in the enclosed version with an L-bracket and cover. It provides a 27.6 V main output rated at 2.4 A and a 27.6 V charging output rated at 1.25 A, within a combined catalogue rating of 100.74 W. An external 24 V nominal battery can supply the connected load during an AC interruption.
Product Datasheet
Download MEAN WELL PSC-100 Datasheet (PDF)
The PSC-100 section is on PDF pages 8, 9, 10. Refer to the complete mechanical drawings and notes when planning installation.
Model and output ratings
Complete model
PSC-100B-C
Configuration
enclosed version with an L-bracket and cover
External battery nominal voltage
24 V
CH1 output voltage
27.6 V
CH1 rated current
2.4 A
CH2 charge voltage
27.6 V
CH2 rated charging current
1.25 A
Rated total output power
100.74 W
CH1 current range
0–3.5 A
CH1 voltage adjustment range
24–29 V
CH1 ripple and noise, maximum
100 mVp-p
CH1 tolerance / line / load regulation
±1.0% / ±0.5% / ±0.5%
CH1 supplies the load and CH2 charges the external battery. The stated power is the combined unit rating, not a separate allowance for each output. Keep the simultaneous load and charging demand within the total power rating and the applicable current and derating limits.
The CH1 current-range ceiling is not an additional output on top of the rated charging load. The CH2 column specifies rated charging current without a separate adjustable current range.
SVR1 adjusts the CH1 output voltage. Ripple and noise are measured with 20 MHz bandwidth using a 12-inch twisted pair terminated with parallel 0.1 µF and 47 µF capacitors. Voltage tolerance includes set-up tolerance, line regulation and load regulation.
Input and timing
Input voltage
90–264 VAC / 127–370 VDC
Input frequency
47–63 Hz
Typical efficiency
88%
Typical AC current
2 A at 115 VAC / 1.2 A at 230 VAC
Typical cold-start inrush current
35 A at 115 VAC / 70 A at 230 VAC
Leakage current
<1 mA at 240 VAC
Set-up / rise time at full load
2400 / 30 ms at 230 VAC; 2400 / 30 ms at 115 VAC
Typical hold-up time at full load
40 ms at 230 VAC / 14 ms at 115 VAC
Unless otherwise specified, catalogue measurements use 230 VAC input, rated load and 25°C ambient temperature. Set-up time is measured at the first cold start; repeated ON/OFF switching can increase the set-up time.
Battery backup and protection
Overload protection
105–150% of rated output power; hiccup mode with automatic recovery after removal of the fault
CH1 overvoltage protection
28.98–37.26 V; shutdown; reapply input power to recover
Battery low-voltage cut-off
20 ± 1 V
Battery low alarm threshold
<22 V
With AC present, the supply powers the load and charges a connected 24 V nominal battery at the same time. When AC fails, the external battery supplies the load through the backup circuit. Connect the battery to Battery + and Battery −, and the load to +V and −V.
The protection features include short circuit, overload, overvoltage, battery low-voltage cut-off and battery reverse-polarity protection by fuse. Verify battery polarity before connection; fuse protection is not a normal operating mode.
The battery is external. Select its capacity and charging requirements for the application; a battery, battery harness and standalone UPS enclosure are not specified as included with this power supply.
AC OK and battery-low relay contacts
Alarm contact rating
30 V maximum / 1 A maximum
AC OK contact, CN3 pins 1–2
Low or short when the supply is ON; high or open when the supply is OFF
Battery-low contact, CN3 pins 3–4
Low or short below 22 V battery voltage; high or open above 22 V
Use an external voltage source and resistor within the contact rating. AC OK indicates the power-supply state; Battery Low indicates the battery threshold. The AC OK relay RL1 also enters hiccup operation while overload protection is active.
Cooling, derating and environment
Cooling
Free-air convection
Working temperature
−20 to +70°C, subject to derating
Working humidity
20–90% RH, non-condensing
Storage temperature and humidity
−20 to +85°C / 10–95% RH
CH1 temperature coefficient
±0.03%/°C over 0–50°C
For this enclosed version with an L-bracket and cover, the horizontal-mounting temperature curve permits 100% load from −20°C through 40°C, then reduces linearly to 50% at 70°C.
The input-voltage curve at 60 Hz permits 80% load at 90 VAC, rising to 100% at 115 VAC and remaining at 100% through 264 VAC. Apply both the input-voltage and ambient-temperature limits.
For fanless operation above 2,000 m, reduce the permitted ambient temperature by 3.5°C per additional 1,000 m. This is an altitude-related thermal derating condition.
Vibration specification: 10–500 Hz, 2 G, 10 minutes per cycle, 60 minutes each along the X, Y and Z axes.
Safety, EMC and reliability
Safety approvals listed
UL62368-1; TUV BS EN/EN62368-1; EAC TP TC 004
Withstand voltage
Input–output: 3 kVAC; input–FG: 2 kVAC; output–FG: 0.5 kVAC
Isolation resistance
100 MΩ between input–output, input–FG and output–FG at 500 VDC / 25°C / 70% RH
Emissions compliance
BS EN/EN55032 (CISPR32) Class B; BS EN/EN61000-3-2 and -3; EAC TP TC 020
Immunity compliance
BS EN/EN61000-4-2, -3, -4, -5, -6, -8 and -11; BS EN/EN55035, light-industry level; EAC TP TC 020
MTBF
2094.5K hours minimum, Telcordia SR-332 (Bellcore); 417.7K hours minimum, MIL-HDBK-217F at 25°C
The supply is a component for installation in final equipment. Reconfirm EMC compliance in the completed equipment. Catalogue EMC testing used the unit mounted on a 230 × 230 mm metal plate, 1 mm thick.
The catalogue specifies a 100% full-load burn-in test and a two-year warranty.
Mechanical installation and mass
Specified dimensions, L × W × H
130 × 85 × 37 mm
Unit mass
440 g — catalogue PACKING reference per unit
Packing entry
0.44 kg; 32 units / 15 kg / 0.73 CUFT
Cover / L-bracket references
946B-T / 946A-D
The PCB drawing uses a 115.8 × 64.75 mm mounting-hole pattern with four Ø3.8 mm holes. The mechanical drawing gives a general ±1 mm tolerance and shows up to 3 mm of underside pin projection; allow installation clearance accordingly.
HS2 and HS3 must not be shorted; maintain a safe isolation distance between both heat sinks and the system case. M1 is the safety-ground point. For improved EMC performance, electrically connect M1, M2, M3 and chassis ground.
Do not short −V to Battery −; keep the load-return and battery-return connections on their designated terminals.
This -C model is the enclosed assembly. Its drawing identifies cover 946B-T and L-bracket 946A-D. Use the corresponding enclosure drawing and mounting details when fitting the unit.
Connections and mating-part selection
CN1 AC input
JST B3P-VH or equivalent; pin 1: AC/N; pin 2: no pin; pin 3: AC/L
CN1 mating parts
JST VHR housing series and JST SVH-21T-P1.1 terminals, or equivalent
CN2 DC and battery output
JST B8P-VH or equivalent; pins 1–2: −V; pins 3–4: +V; pins 5–6: Battery +; pins 7–8: Battery −
CN2 mating parts
JST VHR housing series and JST SVH-21T-P1.1 terminals, or equivalent
CN3 alarm connector
JST B4B-XH or equivalent; pins 1–2: AC OK; pins 3–4: Battery Low
CN3 mating parts
JST XHP housing series and JST SXH-001T-P0.6 terminals, or equivalent
Use the numbered connector drawing when wiring; connector orientation differs between families. Select the complete VHR or XHP housing reference for the required circuit count, wire size and current. Loose mating housings, crimp terminals and wiring assemblies are not stated as included.
Connect the protective earth before operation and preserve the required insulation clearances. Use the manufacturer's installation instructions together with the dimensional and connection drawings.
Application selection
The main DC output and dedicated charging output support battery-backed security equipment, access control, alarm systems, emergency lighting and central monitoring. Size the load and battery charging demand together, and verify the battery charging voltage, alarm interface, mechanical version and environmental derating for the installation.
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