Delta 23-730 Specifications download pdf (Page 13)

50 Hz Mini/Micro

Computer Regulator (MCR) Series

Installation and Operation Manual

Contact Technical Services at (800) 377-4384 with any questions.

Fax-on-Demand: (877) 888-9329, Document #: 8412

Physical Characteristics of Operation – All Units

Operating Temperature

Standard units are designed to operate in ambient temperatures of -20

to +50

C. In operation, a temperature rise will occur whether or not the

transformer is serving a load. Normally, this rise may fall anywhere in the

range of 45-100

C. depending on the regulator type and rating. In any case,

the maximum operating temperature at an ambient of 50

C is always within

safe operating limits.

Magnetic Fields

In almost all applications, this effect may be disregarded. In certain

applications, care should be exercised in the orientation of the core with

respect to critical circuits, in order to minimize the effect in the field.

Electrical Characteristics of Operation – All Units

Checking with Voltmeters

All checks on output voltages should be made with a true RMS voltmeter.

Rectifier type voltmeters will not give accurate readings due to the small

amount of output harmonics present.

Load Regulation

Changes in output voltages resulting from changes in resistive loads from no

load to full load (at a 100% power factor) are approximately four percent.

Effect of Load Power Factor

The median value of output voltage will vary from the nameplate rating if the

load has a power factor other than that for which the regulator was designed.

Load regulation will also be greater as the inductive load power factor is

decreased. However, the resulting median values of output voltage will be

regulated against supply line changes at any reasonable load or load power

factor.

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Delta 23-730 Specifications Page 13