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Measurement categories (Over-voltage categories) 

To ensure safe operation of measuring instruments, IEC61010 establishes safety standards for various electrical 

environments, specified as CAT I through CAT IV, and called measurement categories. Higher-numbered categories 

correspond to electrical environments with greater momentary energy, so a measuring instrument designed for CAT III 

environments can endure greater momentary energy than one designed for CAT II.
• CAT I: Secondary electrical circuits connected to an AC electrical outlet through a transformer or similar device. 

• CAT II: Primary electrical circuits of equipment connected to an AC electrical outlet by a power cord. 

•  CAT III: Primary electrical circuits of the equipment connected directly to the distribution panel, and feeders  

from the distribution panel to outlets. 

•  CAT IV: The circuit from the service drop to the service entrance, and to the power meter and primary over  

current protection device (distribution panel).

Incoming wire

Interior wiring

CAT. III

Transformer CAT. II

CAT. I

CAT. IV

Socket

Symbols

Caution, risk of danger, refer to the operating manual before use

Caution, risk of electric shock

AC (Alternating Current)

DC (Direct current)

AC/DC Selectable (Alternating Current/Direct Current)

Earth (ground) Terminal

The equipment is protected throughout by  
double insulation or reinforced insulation

Application around and removal from hazardous  
live conductors is permitted.

Conforms to Standards of European Union

Designates the product as recyclable  

electronic waste per WEEE Directive

III. GENERAL SPECIFICATIONS 

•  Maximum Voltage between any Terminals and Grounding: 

Refer to the different ranges input protection voltage ..

•      Fused Protection for mA / μA Input Terminal:600mA H 1000V Ø6.35x31.8mm.
•      Fused Protection for 1 OA Input Terminal:10A H 1000V Ø10.3x38.1 mm.
• Display: Maximum reading 6000 (frequency 9999), analogue bar graph 61 segments.
• Measurement Speed: Updates 2-3 times/second.
• Range: Auto or Manual
• Polarity Display: Auto
• Overload indication: Display OL
• Battery Deficiency: Display
• Temperature:
  - Operating: 0˚C to +40˚C (32˚F to +104˚F)
  - Storage: -10˚C to +50˚C (14˚F to +122˚F) 
• Relative Humidity:
 - 

75% @ 0˚C - 30˚C below

 - 

50%@ 30˚C~40˚C 

• Battery Type: One piece of 9V (NEDA1604 or 6F22 or 006P).
• Dimensions (HxWxL): (180 x 87 x 47)mm.
• Weight:Approximate 370g (battery included).
•   Safety/Compliances: 

EN 61010-1,EN 61010-2-030 CAT 1111000V, CAT IV 600Vovervoltage and double insulation standard.

• Certifications: 
• Accuracy Specifications:
  - Accuracy ± a% r b digits guarantee for 1 year. 
  - Operating temperature 18˚C~28˚C
  - Relative Humidity <75%

INTE

RTEK

LISTED

CM

C

US

Summary of Contents for DM6650T

Page 1: ...ave AC DC Voltage Capacitance Test AC Alternating Current Hz Frequency and Duty Cycle Test DC Direct Current mA Millamp Ohm Resistance A Amp Diode Test NCV Non Contact Voltage Sensing Continuity Test...

Page 2: ...g mode OL The input value is too large for the selected range Test of diode The continuity buzzer is on Maximum and Minimum reading The battery is low Warning To avoid false readings which could lead...

Page 3: ...may cause sparking which can lead to an explosion Never use the instrument if its surface or your hand is wet Do not exceed the maximum allowable input of any measuring range Never open the battery co...

Page 4: ...rect current AC DC Selectable Alternating Current Direct Current Earth ground Terminal The equipment is protected throughout by double insulation or reinforced insulation Application around and remova...

Page 5: ...stated below Input Amplitude DC electric level is zero lnputAmplitude rangeX30 Frequency response 1kHz NOTE If the value of current to be measured is unknown use the maximum measurement position and...

Page 6: ...F CAPACITANCE MEASUREMENT See Figure 7 To measure capacitance connect the Meter as follows 1 Insert the red test lead into the input terminal and the black test lead into the COM terminal 2 Set the ro...

Page 7: ...mum values This sets the display to show high MAX and low MIN readings The Meter enters the manual ranging mode after pressing MAX MIN button Press and hold MAX MIN for over 2 seconds to exit the MAX...

Page 8: ...n 15 minutes AC CURRENT RANGE RESOLUTION ACCURACY 600 A 0 1 A 1 2 5 6000 A 1 A 60mA 0 01mA 1 5 5 600mA 0 1mA 6A 0 001A 2 0 5 10A 0 01A When 5A Continuous measurement is allowed When 5A Continuous meas...

Page 9: ...hen the fuse test has been completed disconnect the connection between the testing leads and the circuit under test and remove the testing leads from the input terminals of the Meter C Replacing the F...

Page 10: ...ts original purchasers in connection with the sales of Sperry products provided that such products shall not have been altered by the distributor The distributor shall be fully responsible for any war...

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