Operating The Ni Ps-12/13; External Input Protection; Hazardous Risks; Service Parts - National Instruments NI PS-13 User Manual And Specifications

Operating the NI PS-12/13

This section provides general information on the operation of the NI PS-12/13 power supply.

External Input Protection

The NI PS-12/13 power supply is tested and approved for branch circuits up to 20 A. External
protection is only required if the supplying branch has an ampacity greater than 20 A. In some
countries, local regulations might apply, so check local codes and local requirements.
If an external fuse is utilized, a minimum value is required to avoid undesired tripping of the
fuse, shown in Table 2.
Table 2. Maximum and Minimum Ampacities for External Fuses
Ampacity
Minimum
Maximum

Hazardous Risks

Caution
Use the PE pin on the front panel terminal block for earth connection instead of one
of the screws on the housing.
Turn the power off before working on the power supply. Protect against inadvertent
re-powering.
Make sure the wiring is correct by following all local and national codes.
Do not open, modify, or repair the unit.
Use caution to prevent any foreign objects from entering into the housing.
Do not use in wet locations or in areas where moisture or condensation can be
expected.

Service Parts

The NI PS-12/13 power supply does not contain any serviceable parts. If an internal fuse trips,
it is caused by an internal defect. If damage or malfunction occurs during operation, immediately
turn the power off and send the power supply to National Instruments for inspection.
Attempting to repair or modify the power supply will void your warranty.
Note
8 | ni.com | NI PS-12/13 Power Supply User Manual and Specifications
B-Characteristic
10 A
20 A
Do not use the unit without the proper earth connection (Protective Earth).
C-Characteristic
6 A
20 A