+44 203 286 8189 steve.jones@westside-int.com

Open and enclosed power supplies

To ensure reliable operation of Rosahl membrane dehumidifiers under all operating conditions it is important to use a switching power supply (PSU) with the performance specified in the relevant membrane specification sheet.

Service life and reliability of the power supply are affected by the ambient temperature. Depending on the ambient temperature of the power supply installation and the supply voltage used, the PSU may require derating. (Please refer to the specification)

Westside offers a range of CE and UL marked PSUs in open and semi-enclosed construction. Go here for the catalogue page

 

Open construction: Otherwise known as an open board type PSU has an IP00 rating. The open board PSU has four mounting points on the circuit board.

When using mounting posts to install the open board switching power supply, ensure the posts do not exceed the 8mm hatched area indicated in the installation information.  Allow minimum 8mm clearance from the mounting surface.

Model BWT3.3SX-U1A for size 7 membranes
Model BWT3.3SX-P-U1A for size 7 membranes

Semi-enclosed: The semi-enclosed version is also IP00, but with cover plates to provide additional mechanical protection and simpler installation.

The enclosed PSU has four tapped mounting points in the base and two along one side. Use all mounting points and do not over tighten fixings. The semi-enclosed PSU is not suitable for mounding on the underside of the mounting plate

Open-board type power supplies

MembraneDimensionsModel
M-2J1R
M-3M1R
M-3J1R
MDL-3
50W x 105L x 21H @ 73g
BWS3.3SX-U1A
M-5J1R
MDL-5
50W x 125L x 22H @ 95g
BWM3.3SX-U1A
M-7J1R
MDL-7
56W x 133L x 26H @ 135g
BWT3.3SX-U1A
M-10J1R
56W x 195L x 31.6H @ 210g
BWB3.3SX-U1A
Optional cable harness
The cable harness includes input and output terminals with 400mm cables

Semi-enclosed type power supplies

MembraneDimensionsModel
M-2J1R
M-3M1R
M-3J1R
MDL-3
32 x 57 x 125 @ 175gBWS3.3SX-P-U1A
M-5J1R
MDL-5
32 x 57 x 145 @ 240gBWM3.3SX-P-U1A
M-7J1R
MDL-7
36 x 66 x 165 @310gBWT3,3SX-P-U1A
M-10J1R
41 x 65 x 225 @ 450gBWB3.3SX-P-U1A