AYR.160 - Residual current circuit breaker ENTES - Free user manual and instructions

Product Type	Earth Resistance Tester
Model	AYR.160
Brand	ENTES
Measuring Range	0.01 Ω to 2000 Ω
Resolution	0.01 Ω
Accuracy	±2% of reading ±3 digits
Test Frequency	128 Hz
Power Supply	6 x 1.5 V AA batteries
Battery Life	Approx. 2000 measurements
Display	LCD, 4 digits
Overload Protection	250 V rms for 10 seconds
Operating Temperature	0°C to 40°C
Storage Temperature	-10°C to 50°C
Humidity	80% RH max
Dimensions (W x H x D)	180 x 140 x 70 mm
Weight (including batteries)	Approx. 600 g
Safety Standards	IEC 61010-1, CAT II 300 V
Functions	Earth resistance measurement, ground voltage measurement, continuity test
Accessories	Test leads, alligator clips, carrying case, user manual
Maintenance	Clean with dry cloth, avoid moisture, calibrate annually
Spare Parts	Test leads, batteries, fuses (if applicable)

Frequently Asked Questions - AYR.160 ENTES

How do I measure earth resistance with the AYR.160?

Connect the test leads to the E, P, and C terminals. Insert the probes into the ground at recommended distances. Press the test button. Read the resistance value on the LCD.

What is the maximum earth resistance that can be measured?

The AYR.160 can measure up to 2000 Ω with a resolution of 0.01 Ω.

What batteries does the device use?

It requires 6 AA batteries (1.5 V each). Alkaline batteries are recommended for longer life.

How long do the batteries last?

Battery life is approximately 2000 measurements, depending on usage and battery type.

Can I use this device to measure ground voltage?

Yes, the AYR.160 can measure ground voltage in addition to earth resistance.

What safety precautions should I take when using the AYR.160?

Always ensure the circuit is de-energized before connecting. Do not exceed the maximum input voltage of 300 V. Use insulated gloves and follow local safety regulations.

How do I clean and maintain the instrument?

Clean the exterior with a dry cloth. Avoid using solvents. Store in a dry environment. Calibration should be performed annually.

What is the accuracy of the AYR.160?

The accuracy is ±2% of reading ±3 digits for resistance measurements.

Can I replace the test leads?

Yes, test leads are spare parts and can be ordered from ENTES or authorized distributors.

The display shows 'OL'. What does that mean?

'OL' stands for overload. This indicates the resistance value is beyond the measuring range (over 2000 Ω) or the input voltage is too high.

USER MANUAL AYR.160 ENTES

Technical line drawing of a mechanical housing or enclosure with mounting holes and a central rectangular component (no text or symbols)

Technical line drawing of a mechanical component with internal channels and mounting brackets (no text or symbols)

Technical line drawing of a mechanical component with mounting holes and a rectangular housing (no text or symbols)

Technical line drawing of a mechanical component or enclosure with vertical ribs and a rectangular base (no text or symbols)

Teknik Parametreler

Technical line drawing of a mechanical housing or enclosure with mounting holes and a central rectangular component (no text or symbols)

Technical line drawing of a mechanical component or bracket (no text or symbols)

Technical line drawing of a mechanical component with mounting holes and a rectangular housing (no text or symbols)

Line drawing of a cabinet or enclosure with vertical slats and a door, no text or symbols present

Technical Parameter

Technical Parameter	Electrical parameter			AYR.400		AYR.250		AYR.160
	Rated working voltage	Ue	V	AC400	AC690	AC400	AC690	AC400	AC690
	Rated working current	le	A	400	315	250	200	160	100
	Conventional thermal current	Ith	A	400	315	250	200	160	100
	Rated limited short-circuit current(with fuse link )		KA	100	50	100	50	100	50
	Utilization Category (with fuse link )			AC-23B	AC-21B	AC-23B	AC-21B	AC-23B	AC-21B
	Rated insulation voltage	Ui	V	AC1000	AC1000	AC1000	AC1000	AC1000	AC1000
	Rated surge-resistant voltage	Uimp	KV	12	12	12	12	12	12
	Rated frequency		Hz	50/60	50/60	50/60	50/60	50/60	50/60
	Electrical durability times		times	200	200	200	200	200	200
	Maximum torque		N.m	20	20	15	15	12	12
	Fuse	Size : IEC60269-2		2	2	1	1	00	00
		Rated working current	In A	400	315	250	200	160	100
		Loss power	Pn W	34	45	23	32	12	12

AYR.160

Configuration & installation dimension

AYR.250

Specification table

model	a	b	c	d	e	f	g	h	i	j	k
AYR.250	185	247	111	295	185	42.5	22.5	57	110	/	114
AYR.400	210	288	129	344	210	52	26	65	132	/	130

Product installation(160A)

Fixed type's installation

A

Fixed type's installation

A