HP 850F User manual

1
Overview
This Operating Manual covers information on safety and cautions. Please
read the relevant information carefully and observe all the Warnings and
Notes strictly.
Warning
To avoid electric shock or personal injury, read the “Safety
Information” and “Rules for Safe Operation” carefully before using the
Meter.
This is a three phase intelligent handheld digital power clamp meter
(hereafter referred to as “the Meter”) which has both the features of digital
current meter and also power measurement meter.
The Meter can measure Voltage, Current, Active Power, Apparent Power,
Reactive Power, Power Factor, Phase Angle, Frequency, Active Energy and
etc.
Unpacking Inspection
Open the package case and take out the Meter. Check the following items
carefully to see any missing or damaged part:
Item
Description
Qty
1
English Operating Manual
1 piece
2
Red Test Lead
1 piece
3
Black Test Lead
1 piece
4
Blue Test Lead
1 piece
5
Yellow Test Lead
1 piece
6
Red Alligator Clip
1 piece
7
Black Alligator Clip
1 piece
8
Blue Alligator Clip
1 piece
9
Yellow Alligator Clip
1 piece
10
USB Interface Cable
1 piece
11
Software
1 piece
12
Tool Box
1 piece
13
9 V Alkaline batteries
1 pieces

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In the event you find any missing or damage, please contact your dealer
immediately.
Safety Information
This Meter complies with the standards IEC61010: in pollution degree 2,
overvoltage category (CAT. III 600V,CAT IV 300V) and double insulation.
CAT. III: Distribution level, fixed installation, with smaller transient
overvoltages than CAT. IV
CAT.IV: Primary supply level, overhead lines, cable systems etc.
Use the Meter only as specified in this operating manual, otherwise the
protection provided by the Meter may be impaired.
In this manual, a Warning identifies conditions and actions that pose
hazards to the user, or may damage the Meter or the equipment under test.
A Note identifies the information that user should pay attention to
International electrical symbols used on the Meter and in this Operating
Manual are explained on page 6.
Rules For Safe Operation
Warning
To avoid possible electric shock or personal injury, and to avoid
possible damage to the Meter or to the equipment under test, adhere
to the following rules:
Before using the Meter inspect the case. Do not use the Meter if it
is damaged or the case (or part of the case) is removed. Look for
cracks or missing plastic. Pay attention to the insulation around the
connectors.
Inspect the test leads for damaged insulation or exposed metal.
Replace damaged test leads with identical model number or electrical
specifications before using the Meter.
Do not apply more that the rated voltage, as marked on the Meter.
When measurement has been completed, disconnect the
connection between the test leads and the circuit under test, remove
the testing leads away from the input terminals of the Meter and turn

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the Meter power off.
Do not carry out the measurement when the Meter’s back case and
/ or battery door is opened to avoid electric shock.
When the Meter working at an effective voltage over 30V in AC,
special care should be taken.
Use the proper terminals and function for your Measurements.
Do not use or store the Meter in an environment of high
temperature, humidity, explosive, inflammable and strong magnetic
field. The performance of the Meter may deteriorate after dampened.
Do not use the Meter if the surface of it is wet or the user’s hands
are wet.
When using the test leads, keep your fingers behind the finger
guards.
Replace the battery as soon as the battery Indicator appears.
With a low battery, the Meter might produce false readings that can
lead to electric shock and personal injury.
 When opening the battery door, must make sure the Meter is
power off.
When servicing the Meter, use only the same model number or
identical electrical specifications replacement parts.
The internal circuit of the Meter shall not be altered at will to avoid
damage of the Meter and any accident.
Soft cloth and mild detergent should be used to clean the surface
of the Meter when servicing.
No abrasive and solvent should be used to prevent the surface of the
Meter from corrosion, damage and accident.
The Meter is suitable for indoor use.
Turn the Meter off when it is not in use and take out the battery
when not using for a long time.
Constantly check the battery as it may leak when it has been using
for some time, replace the battery as soon as leaking appears.
A leaking battery will damage the Meter.

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International Electrical Symbols

AC (Alternating Current)
 
Grounding
 
Double Insulated
 
Warning. Refer to the Operating Manual
 
Deficiency of Built-In Battery
 
Danger of High Voltage
 
Conforms to Standards of European Union
The Meter Structure
A. The Meter Front Structure (see figure 1)
figure 1

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1
Transformer Jaw: designed to pick up the AC and DC
current flowing through the conductor. It could transfer
current to voltage. The tested conductor must vertically
go through the Jaw center
2

Hand Guards: to protect user’s hand from
touching the dangerous area.
3
LIGHT button (auto display backlight button)
4
MIN/ ▼button
5
LOAD button (recall data)
6
LCD Display
7
A Input Terminal (First phase measurement)
8
B Input Terminal
(Second phase measurement)
9
COM Input Terminal
10
C Input Terminal (Third phase measurement)
11
CLEAR button (maximum and minimum)
12
SELECT button (press to select alternate
function and sum of Watts measurement)
13
button (Sum)
14
SAVE button (data store button)
15
Max/▲button
16
HOLD button
17
Rotary Switch
18
USB 
19
The distributing line device will avoid the dangerous when
distributing electrical wire with hands
20
Leads Cramp in the Clamp easy for fixed one Lead when
you need test two separation vertices

6
B. Button operation performed
Button
Operation Performed
HOLD
●Press HOLD to enter the Hold mode in any mode,
appears and the Meter beeps.
●Press HOLD again to exit the Hold mode to return to
measurement mode, the Meter beeps and disappears.
LIGHT
●Press LIGHT to turn the display backlight on.
●The display backlight will be off automatically after 30
seconds.
Rotary Switch
use this switch to select functions
●“kW”Range--Active power
●”kVA”Range--Apparent power
●“kVar”Range --Reactive Power
●“COSф”Range--Power factor
●“ф”Range-- Phase Angle
●“Hz”Range-- Frequency
●“kWh”Range--Active Energy
●“RST”Range-- Phase sequence detection
MAX/▲
●Press to start recording of maximum value, it valid at
voltage, current, active power and apparent power ranges
only.
●Press once at LOAD mode, MR icon shown, the Meter
displays the next stored reading, the left secondary display
showing the index increase one.
●Press once at ∑mode, CAL icon shown,
the Meter steps through sum of active power (main display) +
sum of reactive power (secondary display) and sum of power
factor (main display) + sum of apparent power.
LOAD
●Press once to enter LOAD mode, MR appears and the
Meter beeps.
●Press again to exit LOAD mode, MR disappears and the
Meter beeps.
●Press and hold LOAD for 1 second to display the stored
data quickly.
NOTICE: Please make sure switch choose corresponding
function when load data.
For example : save data in KW function, If want load it again ,
should turn on rotary switch choose KW function first.

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∑
●At Active power (main display) + Phase angle (secondary
display) mode, press ∑once button to sum up the current
first phase of 3 phase measurement result. Then carry out
second phase power measurement.
●Press∑again to sum up the second phase power
measurement result, then carry out third phase power
measurement.
●Press ∑again to sum up the third phase power
measurement result, then press SELECT to enter the
measurement of sum of the watts mode, the display
shows the 3 phase sum of the watts value.
●If got needless phase result when measure 2 phases,
don’t press Σ , just press SELECT for skip direct, and got
the total power of 2 phases .
SAVE
●Press once to store single reading, MEM appears
and the Meter beeps.
●The maximum number of data store is 99, when it
achieves 99, the Meter shows FUL. Press CLEAR to
clear the stored reading in order to store next reading.
SELECT
●At active power (main display) + phase angle
(secondary display) mode, press SELECT button to
step through first phase, second phase, third phase
and sum of watts.
●At other mode, press SELECT to step through first
phase, second phase and the third phase.
MIN /▼
●Press to start recording of minimum value, it valid at
voltage, current, active power and apparent power
ranges only.
●Press once at LOAD mode, MR icon
shown, the Meter displays the previous stored reading,
the left secondary display showing the index decrease
one.
●Press once at mode, CAL icon shown,
the Meter steps through sum of active power (main
display) + sum of reactive power (secondary display)
and sum of power factor (main display) + sum of
apparent power.
CLEAR
●At active energy range, press to reset time the zero,
then restart the timing.
●At all other ranges, press to clear stored readings.

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Display Symbols (see figure 3)
figure 3

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Number
Symbol
Meaning
1
A
First phase symbol
2
B
Second phase symbol
3
C
Third phase symbol
4
hh
Unit for hour
5
mm
Unit for minute
6
∑W
Watt: Sum of Watt
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The battery is low.
Warning: To avoid false readings, which
could lead to possible electric shock or
personal injury, replace the battery as soon as
the battery indicator appears.
8
Symbol of Unit.
9
MIN
Minimum reading
10
MAX
Maximum reading
11
CLR
Indicator for clear the stored reading
12
High voltage symbol
13
Indicates negative reading
14
MR
Indicator for recall the stored reading
15
MEM
Indicator for data store
16
FUL
Indicator for data stored is full
17
Data hold is active

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Measurement Operation
Preparation
●Turn on Rotary Switch 。
●Replace the battery as soon as the battery indicator “” appears on the
display.
A. AC Voltage (main display) + Frequency
(secondary display) Measurement (see figure 4)
figure 4
The AC Voltage ranges are:15V, 100V, 300V and 600V
The frequency range is:20Hz~100Hz
To measure AC voltage + frequency, connect the Meter as follows:

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1. Insert the red test lead into the V A terminal, blue test lead into the V B
terminal, yellow test lead to V C input terminal and black test lead to the
COM input terminal.
2. Connect the red test leads (VA input terminal), blue test leads (VB input
terminal) and yellow test leads (VC input terminal) to the corresponding
three phases loaded live wire. Black test lead (COM input terminal) to the
corresponding three phases loaded neutral wire.
3. Press SELECT to select phase location, the display shows the
corresponding phase symbol. VA means the first phase A, VB means
the first phase B,VC means the first phase C.
4. The display shows the corresponding True RMS voltage value and
frequency value of each phase.
5. Press MAX/▲, the LCD displays MAX, it starts recording the maximum
AC voltage True RMS value. Press MAX/▲again to show the current AC
voltage True RMS value.
6. Press MIN/▼the LCD displays MAX, it starts recording the minimum AC
voltage True RMS value. Press MAX/▼again to show the current AC
voltage True RMS value.
7. The display shows 9999 when the input voltage is higher than 600V rms.
Note
●When the measurement has been completed, disconnect the connection
between the testing leads and the circuit under test and remove testing
leads from the input terminals.
B. AC Current (main display) + AC Voltage (secondary display)
Measurement
The AC current ranges are: 40A, 100A, 400A and 1000A
The AC Voltage ranges are: 15V, 100V, 300V and 600V
To measure AC current + AC voltage, connect the Meter as follows:
1. Press the Kw to select AC Current (main display) + AC Voltage
(secondary display) range.
2. Press the lever to open the transformer jaw.
3. Center the conductor within the transformer jaw, then release the Meter
slowly until the transformer jaw is completely closed, Make sure the
conductor to be tested is placed at the center of the transformer jaw,

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otherwise it will cause deviation. The Meter can only measure one
conductor at a time, to measure more than one conductor at a time will
cause deviation.
4. The double display shows the AC current True RMS value and AC
voltage True RMS value.
5. Press MAX/▲, the LCD displays MAX, it starts recording the maximum
AC current True RMS value.
Press MAX/▲again to show the present AC True RMS value.
6. Press MIN/▼, the LCD displays MAX, it starts recording the minimum
AC current True RMS value. Press MAX/▲, again to show the present AC
current True RMS value.
7. The display shows 9999 when the current of the tested conductor is
higher than 1000A rms.
Note
●When the measurement has been completed, disconnect the connection
between the conductor under test and the jaw, and remove the conductor
away from the transformer jaw of the Meter.
C. Active Power (main display) + Phase Angle (secondary display)
Measurement
The active power ranges are:40A, 100A, 400A and 1000A
The phase angle ranges are: 0°~360°
Warning
To avoid damages to the Meter or harms to you, do you measure
higher than AC voltage 600 v.r.s. and AC current 1000A v.r.s.
To measure active power + phase angle, connect the Meter as follows:
1. Press the MENU to select Active power (main display) + Phase angle
(secondary display) range.
2. Press the lever to open the transformer jaw, and clamp them to the
corresponding phase of tested conductor. If user needs to measure any
phase of the 3 phase, then clamp them to that phase’s conductor.
3. Connecting method (see figure 6, 7, 8):
●When measuring 3 phase 4 wires, connect the
Meter as figure 6.

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figure 6
Insert red test leads to A input terminal.
Insert blue test leads to B input terminal
Insert yellow test leads to C input terminal and connecting it to every live
wire of the 3 phase.
Insert black test leads to COM input terminal and connect it to the neutral
wire of the 3 phase.

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●When measuring 3 phase 3 wires, connect the Meter as figure 7.
figure 7
Insert red test leads to A input terminal.
Insert blue test leads to B input terminal
Insert black test leads to COM input terminal and connect it to the
neutral wire of the 3 phase.
●When measuring single phase 2 wires, connect the Meter as figure 8

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figure 8
Insert red test lead to A, B or C input terminal corresponding to one
of A, Bor C phase
Insert black test leads to COM input terminal.
Connecting the two test leads to live and neutral wires.
4. When measuring 3 phases 4 wires:(see figure 9, 10, 11, 12, 13, 14, 15,
16)
●Press SELECT to choose first phase A, see figure 9. The double
displays show the active power kW value and also the voltage and current
value of A.

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figure 9
●If necessary, press∑to get the sum of watts as figure 10.
figure 10
●After sum up the current power measurement value of the first phase,
then press SELECT to choose the second phase B, as figure 11
figure 11
●The double display shows the value of active power kW and voltage
current of B.

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●If necessary, press∑to get the sum of watts as figure 12.
figure12
●After sum up the current power measurement value of the second
phase, then press SELECT again to choose the third phase C, as
figure 13.
figure 13
●The double display shows the value of active power KW and voltage
current of C.
●If necessary, press∑to get the sum of watts as figure 14
Figure14
●After sum up the current power measurement value of the third phase,

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finally press SELECT again to display the 3 phase sum of active power
value and reactive power value.
●Press MAX/▲or MIN/ ▼as figure 15 to step through in sequence
three phase sum of active power+ three phase sum of reactive power, and
three phase sum of power factor + 3 phase sum of apparent power.
Figure15
5. When measuring 3 phase 3 wires:
●The first and second phase measuring method is same as 3 phase 4
wires.
●Jump over the third phase measurement.
●Press SELECT to display the 3 phase sum of active power and reactive
power.
●Press MAX/▲or MIN/▼as figure 16 to step through in sequence three
phase sum of active power+ three phase sum of reactive power, and three
phase sum of power factor + 3 phase sum of apparent power.
Figure16
6. The maximum power is 600kW of single phase, 9999 will be displayed

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when it is over than that. The maximum range is 1800kW of three phase
sum of active power, 9999 will be displayed when it is over than that.
7. Press MAX/▲, the display shows MAX, it starts recording the
maximum active power value. Press again to display the current active
power value.
8. Press MIN/▼, the display shows MIN, it starts recording the minimum
active power value. Press again to display the current active power value.
Note
●When there is no input or single phase, the Meter displays 9999.∑
button is not valid.
●It can only sum up the current measurement value. The maximum and
minimum value cannot be summed up.
●Only at this range can carry out sum of watts measurement, other
ranges cannot carry out this measurement.
●When testing has been completed, disconnect the connection between
the testing leads and the circuit under test and remove testing leads from
the input terminals.
D. Apparent Power (main display) + Reactive Power (secondary
display) Measurement.
To avoid damages to the Meter or harms to you, do you measure
higher than AC voltage 600V rms and AC current 1000A rms.
Warning
1. To test for Apparent power (main display) + Reactive power (secondary
display), connect the Meter as follows: Press the MENU to select Apparent
power (main display) + Reactive power (secondary display) range.
2. Press the lever to open the transformer jaw, and clamp them to the
corresponding phase of tested conductor. If user needs to measure any
phase of the 3 phase, then clamp them to that phase’s conductor.
3. The connecting method of 3 phases 4 wires, 3 phases 3 wires or single
phase 2 wires, see figure 6, 7 and 8
4. When measuring 3 phase 4 wires:(see figure 17, 18, 19)
●Press SELECT to choose the first phase A, see figure 17.

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figure 17
●The double display shows the first phase value of apparent power kVA
and reactive power Kvar. Then press SELECT again to choose the second
●phase B, see figure 18.
figure 18
●The double display shows the second phase value of apparent power
kVA and reactive power Kvar.
●Press SELECT again to choose the third phase 3,see figure 19.
figure 19
●The double display shows the third phase value of apparent power kVA
and reactive power Kvar.