Major tech MT930 User manual
INSTRUCTION MANUAL
PHASE ROTATION INDICATOR
MT930
2
3
Contents Page no
1. Introduction .....................................................................................4
2. Symbols ..........................................................................................4
3. Safety Information ............................................................................4
4. The Phase Rotation Indicator Ships with the Following Items ..................5
5. Elements of the Phase Rotation Indicator .............................................5
6. Determine Rotary Field Direction ........................................................6
7. Specifications ...................................................................................6
4
1. INTRODUCTION
The phase rotation indicator is a handheld instrument designed to detect
the rotary field of three-phase systems.
2. SYMBOLS
The following symbols appear on the Motor and Phase Rotation indicator
or in this manual.
3. SAFETY INFORMATION
CAUTION identifies conditions and actions that may damage the
phase rotation indicator.
WARNING identifies conditions and actions that pose a hazard to
the user. To avoid possible electric shock or fire, do the following:
• Read the following safety information carefully before using or servicing
the instrument.
• Adhere to local and national safety codes.
• Individual protective equipment must be used to prevent shock and
injury.
• Use of instrument in a manner not specified by the manufacturer may
impair safety features/protection provided by the equipment.
• Avoid working alone.
• Inspect the test leads for damaged insulation or exposed metal. Check
test lead continuity, damaged leads must be replaced, do not use the
phase Rotation indicator if it looks damaged.
• Be careful when working above 30V AC RMS, 42V AC peak and 60V DC,
Such voltages pose a shock hazard.
• When using the probes, keep fingers away from probe contacts, keep
fingers behind the finger guards on the probes.
Risk of electric shock
Risk of Danger, Important information see manual.
Hazardous Voltage.
Equipment protected by double or reinforced insulation
Earth
AC or DC
Conforms to EU directives
Overvoltage (Installation) Category III. Pollution Degree 2 per
ICE 1010-1 refers to the level of Impulse withstand voltage
protection provided. Equipment of Overvoltage Category III is
equipment in fixed installations (e.g.,electricity meter and
primary over-current protection equipment).
5
• Measurements can be adversely affected by impedances of additional
operating circuits connected in parallel or by transient currents.
• Verify operation prior to measuring hazardous voltages (voltages above
30V AC RMS, 42V AC peak and 60V DC).
• Do not use the phase rotation indicator with any of the parts removed.
• Do not use the phase rotation indicator around explosive gas, vapor, or
dust.
• Do not use the phase rotation indicator in a wet environment.
4. THE PHASE ROTATION INDICATOR SHIPS WITH THE
FOLLOWING ITEMS
• 3 pieces self-retaining test probes
• 3 Alligator Clips
• Users Manual
Note: If an item is damaged or missing, contact the place of purchase
immediately.
5. ELEMENTS OF THE PHASE ROTATION INDICATOR
1 - L1, L2, L3 Indicators
2 - Clockwise Rotation LCD Indicator
3 - Counter Clockwise Rotation LCD Indicator
4 - Test Lead lnput Jack
5 - Brief Instructions on Instrument Rear
6
5
6. DETERMINE ROTARY FIELD DIRECTION
1. Connect the test probes to the end of the test leads.
2. Connect the test probes to the three mains phases.
3. The green ON indicator shows that the instrument is ready for testing.
4. Either the clockwise or counter-clockwise rotary indicator illuminates
showing the type of rotary field direction present.
5. The rotary indicator lights up even if the neutral conductor, N, is
connected instead of the Test lead input jacks.
Nominal Voltage 40V to 850V AC between Phases
Frequency Range (fn) 15Hz to 400Hz
Current Pickup 1mA
Nominal Test Current (In per phase) 1mA
Maximum Operating Voltage (Ume) 850V AC
Operating Temperature 0°C to 40°C
Type of Protection IP40
Dimensions (HxWxD) 135x75x31mm
Weight 135.6g
Approvals CE (EU directives)
Safety For indoor use and in accordance
with the requirements for double
insulation to IEC61010-1/
EN61010-1 IEC61557-7/
EN61557-7 Over voltage Category
III 1000V and Category IV 600V,
Pollution Degree 2.
7. SPECIFICATIONS
Function Range
7
www.major-tech.com www.majortech.com.au
MAJOR TECH (PTY) LTD
South Africa Australia
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