YS-8NAA(0-5-15A) | AC Ammeter YS-8NAA Series | MITSUBISHI

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Scale Connection method or CT ratio Days to Ship

Specification/Dimensions

Scale
0-7.5-22.5A

0-5-15A
Clear
Connection method or CT ratio
5/5A

7.5/5A
Clear

Days to Ship

All

67 Day(s) or Less
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YS-8NAA(0-5-15A)

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(i)Caution

This product belongs in RoHS Directive under Category 9 "Monitoring and control equipment" with exclusion from the usage restriction of phthalate esters until 21 July 2021.

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Product Description

YS-8NAA series AC ammeter (mechanical indicator.)
[Features]
· Used for measuring current in power transmission/distribution lines, load equipment, etc.
· Size: W82 × H82mm.
· Operating principle: movable iron core type.
[Applications]
· An instrument for measuring and displaying current from AC and DC circuits.

Product Specifications
Part Numbers

AC Ammeter Specification

	Rectangular Meter
	Y-N Series
Size (Width × Height) mm	82 × 82
Model Name	YS-8NAA
Operating Principle	Movable iron core type
Accuracy Class (Grade)	2.5
Frequency	50-60Hz dual use
Scale Length (mm)	70
Consumption VA (VA)	1.0
Weight (kg)	0.1

Remark 1. Scale intervals for the movable iron core-type meters are non-uniform, and scale lines near the 0 point of the scale are omitted.
Remark 2. Scale lines and number positions may differ slightly between individual meters, even with the same scale specifications.

Expanded Scale Meters

Use in locations where overcurrents flow temporarily, such as motor circuits.
The effective measurement range covers up to the meter rating value (1x value.) The expanded scale portion is displayed to provide reference values.
Ensure that during application of a current exceeding the rating (applied current [A] / rated current [A])² × the application time (s) does not exceed 500.

Expanded scale example image (YS-206NAA-type)

Expanded Scale Meter Specifications

	Rated Scale Value	Expanded Scale Value
	Rated Scale Value	2x Expansion	3x Expansion	5x Expansion
Direct	1A	2A	3A	5A
	3A	6A	9A	15A
	5A	10A	15A	25A
	10A	20A	30A	50A
	15A	30A	45A	75A
	20A	40A	60A	-
	30A	60A	90A	-
C T Combination	Meter Rating: 5A	CT ratio × 10A	CT ratio × 15A	CT ratio × 25A
C T Combination	Meter Rating: 1A	CT ratio × 2A	CT ratio × 3A	CT ratio × 5A

The manufacturer uses the 3x expanded scale meter as the standard.

Recommended Ammeter Scale Values For Electric Motor Circuits

200‑V three-phase induction motor

Motor Output (kW)	Rated Current (Reference Value A)	Recommended Scale
Motor Output (kW)	Rated Current (Reference Value A)	Ammeter Scale (3x Expansion)	CT Ratio
0.2	1.8	0-3-9A	-
0.4	3.2	0-5-15A	5/5A
0.75	4.8	0-7.5-22.5A	7.5/5A
1.5	8	0-10-30A	10/5A
2.2	11.1	0-15-45A	15/5A
3.7	17.4	0-20-60A	20/5A
5.5	26	0-30-90A	30/5A
7.5	34	0-40-120A	40/5A
11	48	0-60-180A	60/5A
15	65	0-75-225A	75/5A
18.5	79	0-100-300A	100/5A
22	93	0-120-360A	120/5A
30	125	0-150-450A	150/5A
37	160	0-200-600A	200/5A