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 All Categories    Big Look Taut Band 250 - AC Ammeter Configurator - Yokogawa
Weschler Instruments is a manufacturer and distributor of electrical and electronic measurement equipment. Customers worldwide use our products in power plants, steel mills, chemical plants, paper mills and other industrial applications that require rugged, reliable and accurate instrumentation.
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Big Look Taut Band 250 - AC Ammeter Configurator - Yokogawa


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BIG-LOOK-AC-AMMETER

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 Product Overview  

Accuracy

All DC and AC iron-vane; ±2% of full-scale AC rectifier type; ±3% of full scale (with 60 Hz sine wave at 25º C). When standard 60 Hz iron vane ammeters are used at the extreme limits of 25 or 400 Hz, additional error (approx. .75%) may be experienced. Expanded-scale voltmeters: ±.5% of full scale value.

ANSI Specification

All meters meet ANSI Specifications C-39.1

Overload

Ammeters (AC and DC) momentary: 10 times the rated current for 10 consecutive intervals of 0.5 second with a 1 minute interval between successive applications; sustained: 20% for six hours
Voltmeters (AC and DC) - 50% momentary, 20% sustained

Scale Data

90º rotation

Scale Length

Size Length
1 1/2"1.40"
2 1/2"2.06"
3 1/2"2.88"
4 1/2"3.93"

Insulation Level

1 1/2" -1500 VRMS Hi-pot
All meters (except 1 1/2") 2600 VRMS Hi-pot

Burden Data

AC ammeter-5 amps. 0.5 VA max. 0.5 power-factor lagging @60 Hz
AC Voltmeter-unity power factor

Response Time

2.5 seconds (max.) for AC ratings
3 seconds (max.) for 2 1/2", 3 1/2", 4 1/2" size
For microammeters; 2 seconds (max.) for all other DC ratings

Overshoot

Max. of 40%


 DOWNLOADS 

 width= Dim Dwg - 250 Series - 1.5" Model
(PDF, 17KB)

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(PDF, 19KB)

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