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PR570 POWERITE II TRAINING
Dedicated to Success in ElectronicServicing for 50 Years
“POWERITE II”6 WAY SAFETY
ANALYZER
1. AC Receptacle Tester & Voltage Monitor
2. AC Variable Power Supply
3. Isolation Transformer
4. Output Current/Power Monitor
5. Output Circuit Breaker
6. Safety Leakage Tester
IndicatesIsolated Output
is Active
AC VOLTS
AC VOLTS
HOT TOSAFTEY GND
HOT TONEUTRAL
ISOLATEDOUTPUT
HOT TOEXTERNAL
EARTH GNDValid only when
connected toExternal Earth Gnd
CURRENT/POWER
CURRENT/POWER
TRIP RESET CURRENT
POWER
LEAKAGE
TRIP SET
HOTCHASSIS
Amps
Amps
uAmps
Watts
uAmps
VARIABLE ISOLATION TRANSFORMER &SAFETY ANALYZER
PR570
MIN MAXMAXMIN
ONOFF
ISOLATED OUTPUTVOLTAGE
TRIP SET
100 uAMP LEAKAGECAL CHECK
Set Output to 120VAC &Touch Safety Probe Here.
3 Amps At 117VAC Continous, 4 Amps Intermittent Use
TO EXTERNALEARTH GND
Refer ToPull Chart
Isolated OutputOn When Lit
AUTO-TOGGLE
AC Line Safety GndBoth Must Light
SAFETY PROBEINPUT
POWER
POWERITE II
WARNING:For EquipmentUnder TestOnly!
!
ISOLATED OUTPUT
Displays AC Receptacle& Isolated Output
AC Voltages
Adjusts ACV atIsolated Output
Measures Current or Power Delivered to
Isolated Output
Displays Current, Power, & Voltage at
Isolated Output
Measures Input ACV to Safety Ground
ResetsIsolated Output
Trip Current
Measures Variable ACV at Isolated Output
Isolated VariableAC Output
Select to ViewTrip Current
Measures ACLeakage
AdjustsIsolated Output
Trip Current Level
PR570Equipment
Familiarization
H ot
N eutra l E arthG round
AC outlet120VAC
AC Electrical Outlet
ElectricBox
Neutral
Hot (120V)Hot(120VAC)
EarthGround
Rod
B lack
W hite
G reen
AC Electric Box
AC VOLTS
AC VOLTS
HOT TOSAFTEY GND
HOT TONEUTRAL
ISOLATEDOUTPUT
HOT TOEXTERNAL
EARTH GNDValid only when
connected toExternal Earth Gnd
CURRENT/POWER
CURRENT/POWER
TRIP RESET CURRENT
POWER
LEAKAGE
TRIP SET
HOTCHASSIS
Amps
Amps
uAmps
Watts
uAmps
VARIABLE ISOLATION TRANSFORMER &SAFETY ANALYZER
PR570
MIN MAXMAXMIN
ONOFF
ISOLATED OUTPUTVOLTAGE
TRIP SET
100 uAMP LEAKAGECAL CHECK
Set Output to 120VAC &Touch Safety Probe Here.
3 Amps At 117VAC Continous, 4 Amps Intermittent Use
TO EXTERNALEARTH GND
Refer ToPull Chart
Isolated OutputOn When Lit
AUTO-TOGGLE
AC Line Safety GndBoth Must Light
SAFETY PROBEINPUT
POWER
POWERITE II
WARNING:For EquipmentUnder TestOnly!
!
ISOLATED OUTPUT
Hot To External Earth Ground
Earth Ground
AC VOLTS
AC VOLTS
HOT TOSAFTEY GND
HOT TONEUTRAL
ISOLATEDOUTPUT
HOT TOEXTERNAL
EARTH GNDValid only when
connected toExternal Earth Gnd
CURRENT/POWER
CURRENT/POWER
TRIP RESET CURRENT
POWER
LEAKAGE
TRIP SET
HOTCHASSIS
Amps
Amps
uAmps
Watts
uAmps
VARIABLE ISOLATION TRANSFORMER &SAFETY ANALYZER
PR570
MIN MAXMAXMIN
ONOFF
ISOLATED OUTPUTVOLTAGE
TRIP SET
100 uAMP LEAKAGECAL CHECK
Set Output to 120VAC &Touch Safety Probe Here.
3 Amps At 117VAC Continous, 4 Amps Intermittent Use
TO EXTERNALEARTH GND
Refer ToPull Chart
Isolated OutputOn When Lit
AUTO-TOGGLE
AC Line Safety GndBoth Must Light
SAFETY PROBEINPUT
POWER
POWERITE II
WARNING:For EquipmentUnder TestOnly!
!
ISOLATED OUTPUT
AC Receptacle Tests
H ot
N eutra l E arthG round
V ariac o r A uto transform er
A variac or autotransform er provides an AC outputvoltage variable from 0 to approxim ately 140 VAC.
A variac does not provide isolation.
A Variable AC Transformer
Variable AC Power Supply0-140 VAC
AC VOLTS
AC VOLTS
HOT TOSAFTEY GND
HOT TONEUTRAL
ISOLATEDOUTPUT
HOT TOEXTERNAL
EARTH GNDValid only when
connected toExternal Earth Gnd
CURRENT/POWER
CURRENT/POWER
TRIP RESET CURRENT
POWER
LEAKAGE
TRIP SET
HOTCHASSIS
Amps
Amps
uAmps
Watts
uAmps
VARIABLE ISOLATION TRANSFORMER &SAFETY ANALYZER
PR570
MIN MAXMAXMIN
ONOFF
ISOLATED OUTPUTVOLTAGE
TRIP SET
100 uAMP LEAKAGECAL CHECK
Set Output to 120VAC &Touch Safety Probe Here.
3 Amps At 117VAC Continous, 4 Amps Intermittent Use
TO EXTERNALEARTH GND
Refer ToPull Chart
Isolated OutputOn When Lit
AUTO-TOGGLE
AC Line Safety GndBoth Must Light
SAFETY PROBEINPUT
POWER
POWERITE II
WARNING:For EquipmentUnder TestOnly!
!
ISOLATED OUTPUT
Hot Ground
TestEquipment
V
67 VDC
Direct off-line DC supply with bridge rectifier results in a “HOT” chassis
“HOT” ground has direct path to electrical hot side of electrical outlet
Approximately 67 VDC between “HOT” ground and Earth ground
Connecting a ground from a test instrument to a “HOT” ground causes high current through the diode
• An isolation transformer electrically isolates the “HOT” side of the AC plug, eliminating the voltage difference and current that may result between ground references
TestEquipm ent
V
IsolationTransform er
120VACBetw eenC hassisG rounds
V
Defeating Isolation
The isolation transformer can be defeated if twohot chassis are connected at the same time.
Isolated Output On/Off Control
AC VOLTS
AC VOLTS
HOT TOSAFTEY GND
HOT TONEUTRAL
ISOLATEDOUTPUT
HOT TOEXTERNAL
EARTH GNDValid only when
connected toExternal Earth Gnd
CURRENT/POWER
CURRENT/POWER
TRIP RESET CURRENT
POWER
LEAKAGE
TRIP SET
HOTCHASSIS
Amps
Amps
uAmps
Watts
uAmps
VARIABLE ISOLATION TRANSFORMER &SAFETY ANALYZER
PR570
MIN MAXMAXMIN
ONOFF
ISOLATED OUTPUTVOLTAGE
TRIP SET
100 uAMP LEAKAGECAL CHECK
Set Output to 120VAC &Touch Safety Probe Here.
3 Amps At 117VAC Continous, 4 Amps Intermittent Use
TO EXTERNALEARTH GND
Refer ToPull Chart
Isolated OutputOn When Lit
AUTO-TOGGLE
AC Line Safety GndBoth Must Light
SAFETY PROBEINPUT
POWER
POWERITE II
WARNING:For EquipmentUnder TestOnly!
!
ISOLATED OUTPUT
Isolated Output On Indicator (On when Lit.)
Output Off - Output OnSwitch(Switches Isolated Output Voltage On or Off)
Isolated Output Current & Power Monitoring
AC VOLTS
AC VOLTS
HOT TOSAFTEY GND
HOT TONEUTRAL
ISOLATEDOUTPUT
HOT TOEXTERNAL
EARTH GNDValid only when
connected toExternal Earth Gnd
CURRENT/POWER
CURRENT/POWER
TRIP RESET CURRENT
POWER
LEAKAGE
TRIP SET
HOTCHASSIS
Amps
Amps
uAmps
Watts
uAmps
VARIABLE ISOLATION TRANSFORMER &SAFETY ANALYZER
PR570
MIN MAXMAXMIN
ONOFF
ISOLATED OUTPUTVOLTAGE
TRIP SET
100 uAMP LEAKAGECAL CHECK
Set Output to 120VAC &Touch Safety Probe Here.
3 Amps At 117VAC Continous, 4 Amps Intermittent Use
TO EXTERNALEARTH GND
Refer ToPull Chart
Isolated OutputOn When Lit
AUTO-TOGGLE
AC Line Safety GndBoth Must Light
SAFETY PROBEINPUT
POWER
POWERITE II
WARNING:For EquipmentUnder TestOnly!
!
ISOLATED OUTPUT
Isolated OutputCurrent & WattsMeter
Isolated Output Circuit Breaker
AC VOLTS
AC VOLTS
HOT TOSAFTEY GND
HOT TONEUTRAL
ISOLATEDOUTPUT
HOT TOEXTERNAL
EARTH GNDValid only when
connected toExternal Earth Gnd
CURRENT/POWER
CURRENT/POWER
TRIP RESET CURRENT
POWER
LEAKAGE
TRIP SET
HOTCHASSIS
Amps
Amps
uAmps
Watts
uAmps
VARIABLE ISOLATION TRANSFORMER &SAFETY ANALYZER
PR570
MIN MAXMAXMIN
ONOFF
ISOLATED OUTPUTVOLTAGE
TRIP SET
100 uAMP LEAKAGECAL CHECK
Set Output to 120VAC &Touch Safety Probe Here.
3 Amps At 117VAC Continous, 4 Amps Intermittent Use
TO EXTERNALEARTH GND
Refer ToPull Chart
Isolated OutputOn When Lit
AUTO-TOGGLE
AC Line Safety GndBoth Must Light
SAFETY PROBEINPUT
POWER
POWERITE II
WARNING:For EquipmentUnder TestOnly!
!
ISOLATED OUTPUT
Position To MeterCircuit BreakerLevel 0-4Amps
Reset ifCircuitBreakerTrips
ControlSetsCircuitBreaker0-4A
• If the “HOT” ground of the power supply becomes electronically connected to exterior parts of the cabinet housing, a shock hazard exists.
• Protect yourself, your business and your customer. ALWAYS perform a leakage current check after completing a repair!
Causes of Excess AC Leakage Current
Defective AC Line or Switching SupplyIsolation Transformers
Leaky AC Bypass Filter Capacitors
Improper Part Installation - Safety CriticalIsolation Parts
Foreign Objects - Coins, screws, paper clips
DriveG enerator/
Contro l
Feedback/Contro l
M IC 1
M IC 2
M IC 3
M IC 4
Sw itchingT ransistor
Sw itchingT ransform er
Startup
SMPS Safety Leakage Paths
Switch Mode Transformer Primary to SecondaryAC Input Filter CapacitorsIsolation Filter Capacitors Between Hot & IsolatedGrounds
Effects of AC Leakage
Imperceptible
Mild sensation
Painful sensation
Cannot let go
Breathing stopsOften fatal
Heart fibrillation in 1.4seconds - Usually fatal
Heart stops during shock -May Restart if current isremoved before death
Severe burns, but not fatalunless vital organs burned
100 A
1mA
10mA
100mA
1A
10A
500
5
30
50
250
500
45
UL limit for hospitalequipment not
connected directly tothe body
UL limit for consumerproducts
HighestDanger
A safety leakage test ensures that the monitor doesn’t have AC line leakage to exposed metal partsVirtually all manufacturer’s service literature requires a safety leakage test be performed at the completion of any repairSafety leakage testing applies to all consumer electronic devices powered from the AC line, whether or not they have a 3-wire power cordUnderwriter’s Laboratory (UL) standard is 500a
Other standards may applyInternational Electrotechnical Commission (IEC)standard is 700 a
Safety Leakage Testing
• Underwriter’s Laboratory (UL) standard is 500a
• International Electrotechnical Commission (IEC)standard is 700 a
0.15 F
1500 , 10W
WATERPIPE(EARTHGROUND)
TOINSTRUMENT'SEXPOSEDMETAL PARTS
1 Do not use an isolation transformer for this test. Plug the completely reassembled unit directly into the ac outlet.
2 Connect a 1.5K, 10W resistor paralleled by an .015uF capacitor between each exposed metal cabinet part and a good earth ground such as a water pipe, as shown above.
3 Use an ac voltmeter with at least 5000 ohms/volt sensitivity to measure the potential across the resistor.
4 The potential at any point should not exceed 0.75 volts. A leakage current tester may be used to make this test; leakage current must not exceed 0.5 milliamps. If a measurement is outside of the specified limits, there is a possibility of shock hazard. The chassis should be repaired and rechecked before returning it to the customer.
5 Repeat the above procedure with the ac plug reversed. (Note: An ac adapter is necessary when a polarized plug is used. Do not defeat the polarizing feature of the plug.)
Manufacturer Safety Leakage Test
AC VOLTS
AC VOLTS
HOT TOSAFTEY GND
HOT TONEUTRAL
ISOLATEDOUTPUT
HOT TOEXTERNAL
EARTH GNDValid only when
connected toExternal Earth Gnd
CURRENT/POWER
CURRENT/POWER
TRIP RESET CURRENT
POWER
LEAKAGE
TRIP SET
HOTCHASSIS
Amps
Amps
uAmps
Watts
uAmps
VARIABLE ISOLATION TRANSFORMER &SAFETY ANALYZER
PR570
MIN MAXMAXMIN
ONOFF
ISOLATED OUTPUTVOLTAGE
TRIP SET
100 uAMP LEAKAGECAL CHECK
Set Output to 120VAC &Touch Safety Probe Here.
3 Amps At 117VAC Continous, 4 Amps Intermittent Use
TO EXTERNALEARTH GND
Refer ToPull Chart
Isolated OutputOn When Lit
AUTO-TOGGLE
AC Line Safety GndBoth Must Light
SAFETY PROBEINPUT
POWER
POWERITE II
WARNING:For EquipmentUnder TestOnly!
!
ISOLATED OUTPUT
Safety Leakage Testing
Checking Leakage Test Calibration
AC VOLTS
AC VOLTS
HOT TOSAFTEY GND
HOT TONEUTRAL
ISOLATEDOUTPUT
HOT TOEXTERNAL
EARTH GNDValid only when
connected toExternal Earth Gnd
CURRENT/POWER
CURRENT/POWER
TRIP RESET CURRENT
POWER
LEAKAGE
TRIP SET
HOTCHASSIS
Amps
Amps
uAmps
Watts
uAmps
VARIABLE ISOLATION TRANSFORMER &SAFETY ANALYZER
PR570
MIN MAXMAXMIN
ONOFF
ISOLATED OUTPUTVOLTAGE
TRIP SET
100 uAMP LEAKAGECAL CHECK
Set Output to 120VAC &Touch Safety Probe Here.
3 Amps At 117VAC Continous, 4 Amps Intermittent Use
TO EXTERNALEARTH GND
Refer ToPull Chart
Isolated OutputOn When Lit
AUTO-TOGGLE
AC Line Safety GndBoth Must Light
SAFETY PROBEINPUT
POWER
POWERITE II
WARNING:For EquipmentUnder TestOnly!
!
ISOLATED OUTPUT
Set Isolated Output to120VAC. Leakage TestShould Read 100uA +/- 2 Counts
IndicatesIsolated Output
is Active
GETTING STARTED:
1. Turn the PR570 power switch “ON.” Confirm proper AC supply voltage to the PR570 by readingthe “HOT TO SAFETY GROUND” and “HOT TO NEUTRAL” voltages (expect 115VAC to125VAC in the left LCD readout).
NOTE: An open safety ground results in a low “HOT TO SAFETY GROUND” measurement.
2. Turn the AC VOLTS switch to the “ISOLATED OUTPUT” position. Adjust the Isolated OutputVoltage (viewed in the left LCD readout) to 120 VAC using the ISOLATED OUTPUT control.
3. Set the Isolated Output “TRIP SET” to 2 AMPS by placing the CURRENT/POWER switch inthe “TRIP SET” position and adjusting the TRIP SET control until 2.00 is displayed in the right LCD readout.
AC VOLTS
AC VOLTS
HOT TOSAFTEY GND
HOT TONEUTRAL
ISOLATEDOUTPUT
HOT TOEXTERNAL
EARTH GNDValid only when
connected toExternal Earth Gnd
CURRENT/POWER
CURRENT/POWER
TRIP RESET CURRENT
POWER
LEAKAGE
TRIP SET
HOTCHASSIS
Amps
Amps
uAmps
Watts
uAmps
VARIABLE ISOLATION TRANSFORMER &SAFETY ANALYZER
PR570
MIN MAXMAXMIN
ONOFF
ISOLATED OUTPUTVOLTAGE
TRIP SET
100 uAMP LEAKAGECAL CHECK
Set Output to 120VAC &Touch Safety Probe Here.
3 Amps At 117VAC Continous, 4 Amps Intermittent Use
TO EXTERNALEARTH GND
Refer ToPull Chart
Isolated OutputOn When Lit
AUTO-TOGGLE
AC Line Safety GndBoth Must Light
SAFETY PROBEINPUT
POWER
POWERITE II
WARNING:For EquipmentUnder TestOnly!
!
ISOLATED OUTPUT
Displays AC Receptacle& Isolated Output
AC Voltages
Adjusts ACV atIsolated Output
Measures Current or Power Delivered to
Isolated Output
Displays Current, Power, & Voltage at
Isolated Output
Measures Input ACV to Safety Ground
ResetsIsolated Output
Trip Current
Measures Variable ACV at Isolated Output
Isolated VariableAC Output
Select to ViewTrip Current
Measures ACLeakage
AdjustsIsolated Output
Trip Current Level
PR570 Function Review
Congratulations! You are now an experienced PR570 User