• KEWTECH KEW 6310 Electrical Power Analyser
  
  12 kinds of Power Measurements (See Below)
   
• Extremely compact design
• Comprehensive measurements
  - Instantaneous Values
  - Energy consumed
  - Demand monitor / prediction
  - Wave form and vector diagrams
  - Harmonic measurements and analyser
  - Power quality analyser
  - Displays and calculates power factor and corrective capacitors
   
• Includes three 3000A flexi-clamps.
   
• Print screen function saves any screen, including connection diagram – for fast report writing.
   
• Fourth current channel for measured neutral current (neutral current also calculated) or earth leakage.
   
• Test leads colour coded to current British Standard.
   
• Will work from alkaline batteries, rechargeable batteries or direct from mains.
   
• When running direct from mains rechargeable batteries will be charged.
• User friendly intuitive software suppled with tester.
• Internal memory plus flash card memory – up to 1GB
• Digital output for use to control max demand.
• Two additional inputs for external sensors. For instance to monitor lighting levels.
   
• Complies fully to IEC61010-1 Cat. III 600
• Kyoritsu KEW6310 2 year warranty.

The Kewtech KEW6310 Measures:
 

• Voltage
• Current
• Active power
• Reactive power
• Apparent power
• Power factor
• Frequency
• Current flowing on the neutral line (Only on 3 phase 4 wire measurement)
• Active power energy
• Reactive power energy
• Apparent power energy
• Demand measurement

Transients / Over Voltage (Impulse):

● Can Set Detecting Level Value (Threshold Value).
● Easy-to-Use Checking the Occurrence data On The Display.
Cause of Transients Over Voltage
Arises from defective contact etc. of Breakers, Magnets and Relays.
Reaches highest value (peak value) of voltage in a very short time from inputting voltage and this is a unipolar type voltage change (Spike) that attenuates slowly.
Bad Effect of Transients Over Voltage
Destroys the instrument’s power source and causes reset action due to sudden voltage change (Spike).

Inrush Current:

● Can Set Detecting Level Value (Threshold Value).
● Easy-to-Use Confirming the Occurrence data On The Display.
Cause of Inrush Current
Large current (Surge current) flows transiently at the time of starting of instruments etc. which have built-in motor, incandescent lamp, larger capacity smoothing condenser.
Bad Effect of Inrush Current
Causes bad effect to power switch's welding, fusing, breaker’s trip and converter circuit etc. and also causes unstable power voltage.

Harmonics Analysis:

● Can Measure and Analyze from 1st to 63rd Harmonics.
● Harmonics Contents (THD: Total Harmonics Distortion Display)
● Can Judge Inflow / Outflow.
● Can Set Detecting Level Value (Threshold Value).
Cause of Harmonics
Control circuits of instruments use inverter circuit (condenser input type converter circuit) and thyristor control circuit (phase control circuit). These circuits cause distortion in the current. The distortion causes harmonics.
Bad Effect of Harmonics
Causes burning of phase advance condenser and reactor, beat of transformer, wrong way of breaker, flicker of TV image, noise of audio players etc.

Swells / Dips / Instantaneous Stop:

● Can Set Detecting Level Value (Threshold value).
● Easy-to-Use Confirming the Occurrence data such as Swells/Dips/Instantaneous Stop on the Display.Cause of Swells (Voltage rise)
Voltage rises instantaneously by Inrush Current caused at the time of power input of the power line switchgear.
Cause of Dips (Voltage drop)
Voltage drop happens by Inrush Current caused at the time of starting of load of motors etc.
Cause of Instantaneous Stop
Power supply stops instantaneously due to thunderbolt etc. (Under 1 sec.) (Interruption of Service > Power supply stop more than 1sec.)
Bad Effect of Swells / Dips / Instantaneous Stop
Stops operation of instruments / welding robots and causes reset of OA appliances like PC.

Unbalance Rate

● One Touch Switch to Vector display and Power display
● Easy-to-Use Confirming Phase angle difference thanks to Vector display
Cause of Unbalance
Specific Phase gets over loaded due to fluctuation of power line load and unbalanced equipment built. These cause distortion of voltage / current, voltage drop and antiphase voltage.
Bad Effect of Unbalance
Causes unbalance of voltage / current, uneven turning of motor, antiphase voltage, harmonics etc.