Switch mode Power Supply

S82K

L-23

Wiring

Carefully wire the input/output terminals while paying attention to

their polarities so as to prevent incorrect wiring.

Battery Charging/Backup

With S82K-

@09024/-@10024/-24024T models, a reduction in lifetime

due to over discharge of the battery can be prevented using the DC

LOW output. (Discharge can be interrupted at 0.75 to 0.9

× 24 V.)

Note: 1. For details of charging voltages and charging currents, refer

to the specifications for the battery.

2. In order to prevent overvoltage to the battery, install an ov-

ervoltage protection circuit (90/100-W models).

3. To protect the battery in the event of incorrect operation,

such as load short-circuiting, be sure to install a fuse or cir-

cuit breaker.

4. To limit the level of charging current to the battery, install an

overcurrent limit circuit.

With other models, when connecting a battery to the load, install an

overcurrent limit circuit and overvoltage protection circuit.

Series Operation

S82K 90-W/100-W/240-W model can be operated in series.

It must be noted that the + output of the 7.5-W dual output model

cannot be connected in series to its – output.

Parallel Operation

S82K 100-W/240-W models can be operated in parallel.

Perform parallel operation with power supplies satisfying the same

specifications.

Note: When operating the S82K-P10024 or S82K-

@24024@ in paral-

lel operation, set the switch to “PARALLEL.” Refer to the derat-

ing curve for the rated current under this operation.

Parallel Operation Precautions

• The length and thickness of each wire connected to the load must

be the same so that there is no difference in voltage drop value

between the load and the output terminals of each Power Supply.

• Adjust the output voltage of each Power Supply so that there will be

no difference in output voltage between each Power Supply.

• If the S82K-P10024 or S82K-

@24024@ models are used in single

operation under the parallel operation setting, the overcurrent pro-

tection will be actuated at an output of 90% to 95% (in current), and

will not allow a 100% output.

• If the S82K-P10024 or S82K-

@24024@ models are used in parallel

operation under the single operation setting, one of them will oper-

ate at 110% output, causing severe heat derating and shortening

the service life.

14

15

16

+V

−V

9

10

11

12

13

Example: Lead Storage Battery Backup Circuit

Fuse/Circuit breaker

DC Low

+V

−V

+V

−V

+V

−V

+V

−V

90-, 100-, and 240-W Models

3-, 7.5-, 15-, 30-, 50-W Models

INPUT

INPUT

INPUT

INPUT

+V

−V

+V

−V

INPUT

INPUT

Load

100- and 240-W Models

+V

−V

+V

−V

INPUT

INPUT

Load

3-, 7.5-, 15-, 30-, 50- and 90-W Models