UT501A - équipements de mesure Uni-T - Notice d'utilisation et mode d'emploi gratuit

Type de produit	Mégohmmètre numérique (testeur d'isolement)
Marque	Uni-T
Modèle	UT501A
Dimensions (L x l x h)	Environ 130 x 70 x 35 mm
Poids	Environ 200 g (sans piles)
Alimentation	6 piles 1,5 V AA (LR6)
Tensions d'essai	500 V / 1000 V
Plage de mesure d'isolement	0,1 MΩ à 2000 MΩ
Continuité	Oui, avec alarme sonore
Fonctions principales	Test d'isolement, continuité, mesure de tension AC/DC (facultatif)
Affichage	Écran LCD rétroéclairé
Entretien et nettoyage	Nettoyer avec un chiffon humide, pas de solvants
Sécurité	CAT II 300 V, double isolation
Pièces détachées et réparabilité	Piles et fusibles remplaçables par l'utilisateur
Informations générales	Utilisation intérieure, altitude max 2000 m

FOIRE AUX QUESTIONS - UT501A Uni-T

Comment utiliser le testeur d'isolement UT501A ?

Assurez-vous que l'appareil est allumé, sélectionnez la tension de test (500V ou 1000V), connectez les cordons de mesure à l'équipement hors tension et appuyez sur le bouton de test. Lisez la valeur de résistance d'isolement sur l'écran.

Quelle est la signification des symboles sur l'écran ?

Les symboles incluent l'icône de batterie, l'unité de mesure (MΩ), le symbole de tension, et le symbole de continuité. Consultez le manuel pour une description complète.

L'appareil ne s'allume pas, que faire ?

Vérifiez les piles : ouvrez le compartiment et remplacez les 6 piles AA si nécessaire. Assurez-vous que les piles sont insérées avec la bonne polarité.

Comment remplacer le fusible de l'UT501A ?

Débranchez tous les cordons, ouvrez le compartiment des piles, retirez le fusible grillé et installez un fusible de remplacement identique (généralement 0,5A/250V). Refermez le compartiment.

Quelles précautions de sécurité dois-je prendre ?

Ne jamais utiliser le testeur sur des circuits sous tension. Déchargez toujours les capacités avant de mesurer. Portez un équipement de protection individuelle et respectez les CAT II 300V .

Comment interpréter une mesure d'isolement ?

Une valeur de résistance d'isolement élevée (supérieure à 1 MΩ) indique une bonne isolation. Les valeurs inférieures à 0,5 MΩ suggèrent un défaut d'isolation. Comparez avec les normes applicables.

Peut-on mesurer la tension avec l'UT501A ?

Oui, certains modèles UT501A mesurent la tension AC/DC en dehors du test d'isolement. Sélectionnez le mode approprié à l'aide du commutateur rotatif.

Comment nettoyer l'appareil ?

Éteignez l'appareil et retirez les piles. Nettoyez le boîtier avec un chiffon doux légèrement humide. N'utilisez pas de solvants ou de produits abrasifs.

Que faire si l'écran affiche 'Err' ?

Cela peut indiquer une surcharge ou une connexion incorrecte. Vérifiez les cordons, assurez-vous que la résistance mesurée est dans la plage de l'appareil, et que les piles sont suffisamment chargées.

Quelle est la garantie de l'UT501A ?

Uni-T offre généralement une garantie de 1 an à compter de la date d'achat. Conservez votre preuve d'achat pour le service de garantie.

MODE D'EMPLOI UT501A Uni-T

UT501A

Operating Manual

Insulation resistance tester

I. Overview

UT501A Insulation Resistance Tester is designed with brand-new design and combination of massive integrated and digital circuits; it can measure insulation resistance, AC voltage, etc. and enjoys high degree of accuracy, stable performance, easy operation and reliability. It is used for insulation resistance measurement for insulation materials and various kinds of electric equipments such as transformer, electric machines, cables, switches, electrical appliances, a ideal tool for electric equipment maintenance, testing and inspection.

II. Safety Information

UT501A is designed and manufactured in compliance with: IEC61010-1 CATIII 600V, Double Insulation and Pollution Degree 2 standards. Operate as specified in the manual, otherwise the protection offered by the tester would be impaired.

Compliance Standards: EN61010-1:2010 ; EN61010-2-030:2010 ; EN61557-1:2007

EN61557-2:2007 ; EN61326-1:2013 ; EN61326-2-2:2013

Safety Symbols 1

	Danger	Identifies conditions and actions that may pose hazard to the users.
	Warning	Alerts users to avoid electric shock.
	Caution	Identifies conditions and actions that may cause damage to the instrument or affect accurate measurement.

Danger

• Do not measure any AC circuit with voltages above 750V.
• Do not measure in flammable places. Spark may cause explosion.
• In case that the surface of the instrument is wet or the operator's hands are wet, please do not operate this instrument.
  ● Do not touch the electric conduction parts of test leads when testing.
  ● Do not open the battery cover when testing.
• When insulation resistance is measured, do not touch the electric wire under test.

Warning

• Stop using the instrument if it works abnormally. For example: the equipment is damaged or metal parts are exposed.
  ● Operator must be careful when voltage exceeds 33Vrms, 46.7Vacrms or 70Vdc. Such kinds of voltage may cause electric shock.
• Do not replace the battery in wet conditions.
• Ensure that all test wires are connected to the test ports of tester securely.
• When opening the battery cover, make sure that the instrument is turned off.
• Please read carefully and understand the manual before using the instrument.
• Use the instrument as specified in the manual at any time and store the manual for further reference.
• When the instrument is testing, misoperation may lead to an accident and damage of equipment.

Caution

● Before testing insulation resistance, the circuit under test must be completely discharged and completely isolated with other power circuits.
- In case the test pen is damaged and needs to be replaced, use only the test leads with the same model or identical electrical specifications.
- When the battery indicator (☐) indicates that the power runs out, do not use the instrument. Remove the battery and store the instrument if it is not in use for a long time.
- Do not store or use this instrument in heat, humid, flammable, explosive and strong electromagnetic field environments.

Safety Symbols 2

	The instrument has double insulation or reinforced insulation.
ACV	AC Voltage
1/2	Ground
CE	Comply with European Union standards

III. Technical Specification

Accuracy	±(a% reading + digits); calibration per year.
Ambient temperature:	(23 ± 5)° C
Environmental humidity:	45% to 75%

1. Insulation Resistance Measurement

Rated Voltage	100V	250V	500V	1000V
Test Range	0.00MΩ~5.5GΩ(When it is about less than 4.0MΩ, buzzer outputs alarming sounds). Notes: (100V) 0.00MΩ~100MΩ
Opened Voltage	DC100V±10%	DC250V±10%	DC500V±10%	DC1000V±10%
Rated Test Current	When load is 100KΩ, the rated testing current is 0.9mA ~1.1mA.	When load is 250KΩ, the rated testing current is 0.9mA ~1.1mA.	When load is 500KΩ, the rated testing current is 0.9mA ~1.1mA.	When load is 1 MΩ, the rated testing current is 0.9mA ~1.1mA.
Shorted Current	About less than 1.8mA.
Accuracy	0.00MΩ~99MΩ: ±(3%+5digits); 100MΩ~5.5GΩ: ±(5%+5digits)

1. Voltage Measurement

AC Voltage
Test Range	30V~750V(50Hz/60 Hz)
Resolution	1V
Accuracy	± (2%+3digits)

● Display: LCD, 1999 count.
● Low Battery Indication: " [REDACTED] "
● Overload Indication: ">5.5GΩ" for insulation resistance measurement; "OL V" for voltage measurement.
● Autoranging.
● Discharge voltage automatically.
● Backlight, suitable in dark site.
● Red warning light (warning light is on when high voltage outputs).
● Working conditions: 0°C\~35°C; relative humidity is 75% or less; altitude: 2000m.
● Storage conditions: -20°C\~60°C/ relative humidity is 80% or less.
● Dimensions: 150mm (L) × 100mm (W) × 71mm (D).
● Power supply: alkaline batteries, 1.5V (5#) ×6.
● Weight: 0.5kg (with battery).
● Accessories: test leads, instruction manual, carrying case, gallus.

IV. Tester's Structure (See Diagram 1)

1. EARTH : Insulation resistance input jack.
2. G: Negative voltage input jack.
3. V: positive voltage input jack.
4. LINE: Insulation resistance input jack(high voltage output)

5. LCD screen

6. Backlight button

7. Data-hold button

8. Insulation resistance test button
9. Functional knob

V. Functions of Keys and Knobs

1. HOLD: data hold;
2. LIGHT: turn on or off the backlight source;
3. TEST: turn on or off high voltage test;
4. Test AC voltage when function knob points to ACV;
5. Test DC voltage when function knob points to DCV;
6. Test insulation resistance when the function knob points to 100V/250V/500V/1000V (select the desired output voltage).

VI. Voltage Measurement (See Diagram 2)

To measure AC voltage, do the following:

(1) Insert the red test lead into the "V" input port and the black test lead into the "G" input port.
(2) Place the function knob in the ACV function position to test AC voltage.

Caution

• Do not input AC voltage over 750Vrms. It is possible to display a higher voltage but it may cause damage to the instrument or electric shock.
  ● After all the testing operations, disconnect the test leads and the circuit under test, and remove the test leads from the instrument input jack.
  ● In case the battery cover is opened, do not conduct any test.

VII. Insulation Resistance Measurement (See Diagram 3)

Caution

a. When measuring insulation resistance, please strictly place the two test probes separately. Do not mix them up.
b. Neither short circuit the two test probes under high voltage output state nor measure insulation resistance after high voltage outputs.
c. In case the battery cover is opened, do not conduct any test.

Diagram 3

1. Turn the function knob to select one of test voltages 100V/250V/500V/1000V.

(1) Before testing insulation resistance, the circuit under test must be completely discharged and completely isolated from power supply circuit.
(2) Insert the red test wire into the "LINE" input port and the black test wire into the "EARTH" input port.
(3) Connect the red and black alligator clip to the circuit under test. The voltage is output from the LINE port.

2. Continuous Measurement

After function knob is set to one of test voltages 100V/250V/500V/1000V, press the TEST key, the instrument will be self-locked to measure continuously. The test voltage will be output and TEST button will light up. With the measurement finished, press TEST button to unlock and stop the measurement.

Caution

● Make sure the tested circuit is de-energized before measurement. Do not measure the insulation of any energized equipment or wire.
● After the measurement is completed, do not touch the circuit by your hand. The capacitance stored in the circuit can cause electric shock.
- Do not touch test wires when they are disconnected from tested circuit, wait until the test voltage is completely discharged.
● In case the battery cover is opened, do not conduct any test.

VIII. Battery Replacement (See Diagram 4)

Low Voltage Symbol	Battery Voltage
	7V or less

Please follow these steps to replace batteries:

(1) In order to avoid the risk of electric shock, firstly turn off the power source before replacing the battery (i.e. the function knob points at OFF) and remove the test wires.
(2) Unscrew the screws on the cover of battery compartment and remove the battery compartment. Replace six batteries.
(3) After the batteries are replaced, ensure to fasten the screws.

Diagram 4

Caution

• Please do not mix old and new batteries up.
• Please note battery's polarity when installing batteries.

Danger
● In case the battery cover is opened, do not conduct any test.

IX. Maintenance

Clean the casing:

1. Clean the surface by a piece of moist soft cloth or sponge with clean water.
2. To avoid any damage to the instrument, do not submerge it into water.
3. When the instrument is wet, please dry it before storing.
4. When there is need to calibrate or repair the instrument, please have it serviced by professional personnel or designated service center.

*END*

The manual information is subject to changes without prior notice.

UNI-T®

UNI-TREND TECHNOLOGY (CHINA) CO., LTD.

No6, Gong Ye Bei 1st Road,

Songshan Lake National High-Tech Industrial

Development Zone, Dongguan City,

Guangdong Province, China

Tel: [phone]

http://www.uni-trend.com