3.3. Rack Installation
The 3U, 4U, and 6U TS Series MagnaDC power supply is intended for rack mount installations only into standard 19-inch EIA equipment racks. The 8U, 12U, and 16U TS Series MagnaDC power supply comes on casters and is designed to be used either standalone or installed into standard 19-inch EIA equipment racks.
Additional support, other than that provided by the front panel, is required when installing the TS Series MagnaDC power supply into an equipment rack. Fixed rear support rails are provided for all models, which can be adjusted at time of installation to fit a variety of equipment rack depths. These included rails are designed to mate to inserts on the TS Series side panels using included hardware. Alternatively, angle slides, shelves, or cross beam supports can be used to securely fasten the product to the rack and support the rear weight. The unit should always be horizontally mounted.
When using Magna-Power’s provided fixed rear support rails, it’s recommended to install these rear rails into the rack first, at the location desired. Using a pallet jack or fork lift, lift the power supply into the rack and align the holes of the rear rails with the inserts on the rear of the power supply’s side panels. Once the holes are aligned, secure the rear support rails to the power supply side panel inserts using the provided 10-32 1/2” mating hardware, including screws, flat washer, and lock washers. Remove the casters of the 8U, 12U, and 16U models.
3.3.1. Cooling Requirements
Each TS Series MagnaDC power supply is cooled by suitable fans exhausting warm air to the rear of the cabinet. Depending on the power level, fresh air intake is either from the sides or from both the front and sides, allowing two or more TS Series supplies to be stacked without any clearance required. Equipment racks should be equipped with fans or blowers to remove heat generated by the power supplies. Magna-Power recommends fresh air intake at the bottom of the cabinet and exhaust fans at the top pulling air out of the cabinet.
The TS Series MagnaDC power supply features integrated fans that pull in cool air from the front and/or sides and exhausts warm air from the rear. Equipment racks housing the TS Series MagnaDC power supply should be equipped with either an open back, back with grills, or closed back with cabinet fans to remove heat generated by the TS Series MagnaDC power supply. For fully enclosed cabinets, Magna-Power recommends fresh air intake from the bottom of the cabinet and exhaust at the top.
For cabinet fans to be effective, the ambient intake air temperature outside the rack must be less than the air temperature inside the rack. The TS Series MagnaDC power supply is rated for 50 °C ambient operating temperature. In the case of rack installation, this corresponds to the temperature inside the rack and adequate cooling measures must be taken to ensure the rack’s internal temperature stays below 50 °C.
The following table provides Magna-Power’s recommended per unit cabinet air flow when installing the TS Series MagnaDC power supply in a fully enclosed cabinet:
TS Series Model Power Level |
Maximum Heat Produced |
Recommended Cabinet Air Flow
77 °F (25 °C) Room Temperature
|
Recommended Cabinet Air Flow
104 °F (40 °C) Room Temperature
|
|---|---|---|---|
5 kW |
1.7 kBTU/hr |
40 CFM |
100 CFM |
10 kW |
3.4 kBTU/hr |
80 CFM |
200 CFM |
15 kW |
5.1 kBTU/hr |
120 CFM |
290 CFM |
20 kW |
6.8 kBTU/hr |
160 CFM |
390 CFM |
25 kW |
8.5 kBTU/hr |
200 CFM |
490 CFM |
30 kW |
10.2 kBTU/hr |
240 CFM |
580 CFM |
40 kW |
13.6 kBTU/hr |
310 CFM |
775 CFM |
50 kW |
17.1 kBTU/hr |
390 CFM |
965 CFM |
75 kW |
25.5 kBTU/hr |
590 CFM |
1450 CFM |
100 kW |
34.2 kBTU/hr |
780 CFM |
1930 CFM |
Note
The table above accounts for only a single power supply at each respective power level. When sizing cabinet fans, it is necessary to account for the heat produced by all the products in the cabinet.
Caution
Do not block the air intake on the front or sides of the instrument, nor the exhaust at the rear of the instrument. Blocking these vents could cause the product to overheat. The recommended minimum clearances are 2 inches (5.1 cm) along the sides and back.