Megger WM6 Operation & User’s Manual

made for any test. # Do not touch the circuit during an insulation test. # After insulation tests, capacitive circuits MUST be allowed to discharge BEFORE disconnecting the test leads. # Test leads, including prods and crocodile clips, must be in good order; clean and having no broken or cracked insulation. # Replacement fuses must be of the correct type and rating. Refe ...

10 Preventive maintenance 10 Insulation Testing concepts 11 Mode d’Emploi 12 Betriebsanleitung 14 Instrucciones de Uso 16 Setting-up Procedure 18 Repair and Warranty 19 3 ...

is a completely self contained instrument designed to give rapid and accurate measurement of insulation resistance and continuity resistance. The WM6 uses a low voltage hand-cranked a.c. brushless generator as the power supply. This generator is easy to turn and is connected to a rectifier and d.c. to d.c. converter to provide the test voltage. The WM6 uses a moving coil met ...

continuity 0–100 Ω Terminal Voltage insulation range <600 V on Open Circuit (d.c.) continuity range 800 mV approx. Terminal Voltage at insulation range 500 V + 10% –5% 1 MΩ Load (d.c.) Terminal Current insulation range 1,3 mA approx. on Short Circuit continuity range 55 mA approx. Voltage Stability insulation range <±1% 160 r.p.m. to 240 r.p.m. Ripple Content at 160 r.p.m. insulation range ...

Dimensions 131 x 98 x 61 mm (51/8 x 37/8 x 23/8 in) Weight 650 g (1 lb 7 oz) Terminal Voltage Characteristics 6 WM6 Terminal voltage (volts d.c.) Resistance under test (MΩ) ...

WM6 SUPPLIED WITH THE INSTRUMENT Test lead set including shrouded crocodile clips User Guide Part No. 6171-685 Test Record Card (5 supplied) Part No. 6172-111 AVAILABLE AS AN OPTIONAL EXTRA A ‘test-and-carry’ case with a special compartment for test leads Part No. 6420-088 Test Lead set red/black Part No. 6220-437 Test Record Card (Pack of Twenty) Part No. 6111-216 7 ...

isolated before insulation or continuity tests are made. 2. When capacitive circuits have been tested allow a suitable time to elapse before disconnecting the test leads, for the circuit to discharge. 3. Instruments used in dusty environments should be stripped and cleaned periodically. 4. Do not leave the instrument exposed to direct heat from the sun for long periods. 5. The instrument ...

fuse, use a screwdriver to release the centre part of the holder containing the fuse. Replace with a 1 A 20 x 5 mm ceramic fuse part no. 25413-286. An alternative fuse should not be used as the fuse resistance will affect the lower continuity readings. INSULATION TESTING After connecting the test leads to the instrument and making the preliminary checks as detailed above, set the slider ...

title of an Megger Limited booklet on insulation testing, as it neatly sums up the benefits of preventative maintenance. The savings come in financial terms from costly repairs, lost production, lost profits and in human terms, from lives saved in the event of dangerous electrical faults. Regular insulation testing of electrical equipment can help to detect deteriorating insu ...

Insulation resistance can be considered by applying Ohm’s Law. The measured resistance is determined from the applied voltage divided by the resultant current, V R = I There are two further important factors to be considered. These are: (i) the nature of the current through and/or over the insulation, and : (ii) the length of time for which the test voltage is applied. These two factors are linked. The total current that ...

isolé, préalablement à toute mesure. 2) Après l’essai de circuits capacitifs, attendre le temps nécessaire à la décharge avant de retirer les cordons de mesure. 3) Les appareils utilisés dans les environnements poussiéreux doivent être démontés et nettoyés périodiquement. 4) Ne pas laisser l’appareil trop longtemps exposé au soleil. VERIFICATIONS PRELI ...

— Relier le cordon rouge à la terre ou au bâti de la structure en essai, et le cordon noir à la partie du circuit à mesurer. (b) Pour les essais entre fils — Relier un cordon à chacun des deux fils. Tourner le manivelle à une vitesse comprise entre 160 et 240 t.p.m. La valeur d’isolement sera lue sur l’échelle ‘MΩ’ de l’indicateur. (Lors d’essais sur circuits capacitifs, l� ...

die zu prüfende Schaltung entladen und von der Stromquelle getrennt werden. 2. Nach der Prüfung kapazitiver Schaltungen sind die Testkabel kurzzeitig angeschlossen zu lassen, damit sich die Schaltung entladen kann. 3. In staubiger Umgebung eingesetzte Geräte sind regelmäßig zu warten und zu reinigen. 4. Das Gerät niemals längere Zeit direkter Wärme durch Sonneneinstrahlu ...

Nach Anschließen der Testkabel an das Gerät und Ausführen der oben genannten Vorprüfungen den Schiebeschalter auf ‘MΩ’ stellen. Nachdem die zu prüfende Schaltung von der Stromquelle getrennt ist, die Tedstkabel wie folgt anschließen: (a) Isolierungsprüfungen gegen Erde — das rote Kabel auf Erde bzw. Rahmenmasse der jeweiligen Ausrüstung legen und das schwarze Kabel an den Teil der Schaltung anschließen ,der getestet ...

ADVERTENCIA 1. El circuito bajo prueba debe ser descargado y aislado antes de efectuar las pruebas de aislamiento o continuidad. 2. Cuando se han probado circuitos capacitivos, dejar transcurir un periodo de tiempo adecuado antes de desconectar los cables, de modo que se descargue el circuito, a través del instrumento. 3. Los instrumentos usados en condiciones polvorientas, deben ser despiezados y limpiados periodicamente. 4. Nos dej ...

Después de conectar las sondas de prueba en el instrumento y de efectuar las verificaciones indicadas previamente, seleccionar el interruptor deslizante en la posición “MΩ”. Con el circuito que ha de comprobarse aislado, conectar los conductores de prueba que sigue: (a) Para las pruebas de aislamiento a tierra: Conectar el conductor rojo a tierra o al bastidor del equipo y el conductor negro en la parte del circuito que ...

the table below. See ‘Repair and Warranty’ notes opposite. 18 Step Adjustment potentiometer Adjustment for Conditions for adjustment 1. R15 scale 10 MΩ mark (a) switched to ‘MΩ’ (b) 10 MΩ (500 V rating) resistor across (b) terminals. 2. R16 scale 0 MΩ mark (a) switched to ‘MΩ’ (b) short circuit across terminals. 3. R14 scale 1 MΩ mark (a) switched to ‘MΩ� ...

The instrument circuit contains static sensitive devices, and care must be taken in handling the printed circuit board. If the protection of an instrument has been impaired it should not be used, and be sent for repair by suitably trained and qualified personnel. The protection is likely to be impaired if, for example, the instrument shows visible damage, fails to perform the intended measurements, has been subjected to prolonged storag ...