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POWER EQUIPMENTS

Single-Range Digital Ohmmeters (DMZ-I)

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Panel-mounting Digital Ohmmeters, series DMZ-1, by 'Delta' represent a new generation of digital ohmmeters, wherein four-wire precision has been retained in compact & simplified single-range instruments. These ohmmeters are very useful, where or resistance variation falls within a decade.

Specifications

Aux Supply : 230VAC +10%

Display : 3½ digits,0.5" LEDs

Accuracy : Class: 0.25

Dimensions : 96mm w × 48mm H ×120mm D

Type of Measurement : Four-wire

Model	Range	Resolution
DMZ-I ( i )	2.000 Ohms	1 milliohm
DMZ-I ( ii )	20.00 Ohms	10 milliohm
DMZ-I ( iii )	200.0 Ohms	0.1 Ohms
DMZ-I ( iv )	2000 Ohms	1 Ohms

PORTABLE PRECISION 3Ø WATTMETERS

"DELTA" have been manufacturing precision 3Ø portable digital wattmeters for very wide-range of applications .These wattmeters offer not only very high resolution, especially for low p. f applications, but are useful for very wide range of p.f applications. For 3Ø-3 Wire applications, two-element wattmeter is used; for 3Ø-4wire applications, three-element wattmeter is used. Both have algebraic sum "TOTAL" readout as well. In 3Ø-3Wire applications, from W1 & W2 reading, very precise
p. f. calculations can also be done. All of DELTA's digital wattmeter are of TRUE-RMS type; these wattmeter are very useful when the harmonics are present in the power to be measured. Some of the typical applications are:

Motor testing from no-load to bloked-rotor test.
Distribution transformers testing.
Audit of power-distribution points and major loads with the use of external precision clmp-on C.y's.
Switchgear Testing.
Cross checking of wattmeters of lesser precision.

	3Ø-3WIRE		3Ø-4 WIRE
MODEL	3 WT-1A	3 WT-5A	4WT-1A	4 WT-51
MAX.INPUTS	440 V/1A	440 V/ 5A	440 V/1A	440 V/5A
RANGE	0-762.0 W	0-3810 W	0-762.0 W	0-3810 W
RESOLUTION	0.1 W	0 W	0.1 W	1 W

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