PRA-MPS3

Bosch PRA-MPS3 Multifunction power supply, large, Fully supervised DC‑power supply with integrated fail-safe redundancy, Unique single 12 V battery backup solution, Integrated 6‑port Ethernet switch on RJ45 and SFP, General purpose control inputs and outputs, Backup lifeline for connected amplifiers, Overheat; Overload; Watchdog; RSTP; Lifeline; Backup battery, TCP/IP; OMNEO; AES70, 5x RJ45 (2 with PoE) + 1x SFP, 108 – 264 VAC.

Technical specifications      

Electrical

Power transfer

Mains power supply input

Input voltage range

Input voltage tolerance

Frequency range

Inrush current (EN 61000‑3‑3)

Power factor (PF)

Leakage current to safety ground

 

120 — 240 VRMS

108 — 264 VRMS

50 — 60 Hz

20 ARMS

0.9 — 1.0

< 0.75 mA (120 V), < 1.5 mA (240 V)

Battery power supply input

Nominal DC input voltage

DC input voltage tolerance

Maximum current

Under-voltage protection

 

12.6 V

9 — 15 V

90 A

< 9 V

Battery charger

Nominal charging current

Nominal float voltage

Float voltage control

Temperature sensor NTC

Charging temperature range

 

8.7 A

13.7 V

-21.9 mV/°C

10 kohm / β = 3984 K

-15 — 50 °C

48 VDC outputs (1‑3)

Nominal DC output voltage

Maximum continuous current

Maximum peak current

 

48 V

5.5 A

7.0 A

Power transfer

24 VDC output

Nominal DC output voltage

Maximum continuous current

Maximum peak current

 

24 V

0.7 A

0.9 A

Lifeline DC outputs (1‑3), only when 48 VDC outputs (1-3) are off

Nominal DC output voltage

Maximum continuous current

Maximum peak current

 

18 V

0.7 A

1.0 A

Power over Ethernet (PoE 1‑2)

Nominal DC output voltage

Standard

Maximum PD load

 

48 V

IEEE 802.3af Type 1

12.95 W

Power consumption

  Mains powered

  Active mode, all outputs loaded

Battery powered

  Unloaded

  Active mode, all outputs loaded Per active port

  Per active SFP port

 

 

<1150 W

 

5.2 W

<1000 W

0.4 W

0.7 W

Lifeline / power save interface

Audio level (100 V / 70 V mode)

Frequency response (+0 / -3 dB)

Signal to Noise Ratio (SNR)

 

0 dBV / -6 dBV

200 Hz — 15 kHz

90 dBA

Information related to EN 54-4:1997 / ISO 7240-4:2017 / AS 7240.4:2018

Maximum battery capacity

230 Ah

Lowest discharge voltage

9 V

Continuous output current

(I max. a / I max. b / I min.)

48 VDC outputs (1-3)

24 VDC output

PoE output (1-2)

Lifeline DC outputs (1-3)

 

5.5 A / 5.5 A / 0 A

0.7 A / 0.7 A / 0 A

0.3 A / 0.3 A / 0 A

0.7 A / 0.7 A / 0 A

Continuous output power

(P max. a / P max. b / P min.)

48 VDC outputs (1-3)

24 VDC output

PoE output (1-2)

Lifeline DC outputs (1-3)

 

 

264 W / 264 W / 0 W

16.8 W / 16.8 W / 0 W

15.4 W / 15.4 W / 0 W

12.6 W / 12.6 W / 0 W

Output voltage range

48 VDC outputs (1-3)

24 VDC output

PoE output (1-2)

Lifeline DC outputs (1-3)

 

46 — 50 V

23 — 25 V

44 — 57 V

9 — 18 V

Information related to EN 54-4:1997 / ISO 7240-4:2017 / AS 7240.4:2018

Maximum impedance of battery circuit

230 Ah battery

180 Ah battery

140 Ah battery

100 Ah battery

 

7.1 mohm

8.6 mohm

9.8 mohm

11.0 mohm

Control interface

Control input contacts (1-8)

Principle

Galvanic isolation

Supervision

Contact closed

Contact open

Cable fault detection

Minimum hold time

Maximum voltage to ground

 

Contact closure No

Resistance

measurement

8 — 12 kohm

18 — 22 kohm

<2.5 kohm / >50 kohm

100 ms

24 V

Control output contacts (1-8)

Principle

Galvanic isolation

Maximum contact voltage

Maximum contact current

Maximum voltage to ground

 

Contact switch over (Relay SPDT)

Yes

24 V

1 A

500 V

Supervision

Battery

Disconnect Short circuit Charging state Impedance

Power supplies

Converter voltages Output voltages

Lifeline connection

Impedance

Control input connections

Open / short

Temperature

Per section

Fan

Rotation speed

Controller continuity

Watchdog

Network interface

Link presence

Network interface

Ethernet type

100BASE-TX; 1000BASE- T

Protocols / standards

TCP/IP; OMNEO; AES70

Network Audio Latency (ms)

10 ms

Audio encryption

AES 128

Control data security

TLS

Number of Ethernet ports

5x RJ45 (2 with PoE) + 1x SFP

Mean time between failures (MTBF) (h) extra- polated from calculated MTBF of PRA-AD608

350,000 h

Environmental

Operating temperature (°C)

-5 °C – 50 °C

Operating temperature (°F)

23 °F – 120 °F

Storage temperature (°C)

-30 °C – 70 °C

Storage temperature (°F)

-22 °F – 158 °F

Operating relative humidity, non-condensing (%)

5% – 95%

Air pressure (hPa)

560 hPa – 1,070 hPa

Installation altitude (m)

-500 m – 5,000 m

Installation altitude (ft)

-1,640 ft – 16,404 ft

Operating vibration

Amplitude

< 0.7 mm

Acceleration

< 2 G

Bump (transport)

< 10 G (IEC 60068-2-27)

Fan airflow

Front to sides/rear

Fan noise, idle condition, 1 m distance

< 30 dBSPLA

Fan noise, rated power, 1 m distance

< 53 dBSPLA

Mechanical

Dimensions (H x W x D) (mm) with mounting brackets

88 mm x 483 mm x 400 mm

Dimensions (H x W x D) (in) with mounting brackets

3.50 in x 19 in x 15.70 in

Rack unit (U) (in)

2 U (19 in)

IP rating

IP30

Material of the enclosure

Steel; Zamak

Color in RAL

RAL 9017 Traffic black;

RAL 9022 Pearl light grey

Weight (kg)

11.80 kg

Weight (lb)

26 lb

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