Clarke PC20 User manual

USER INSTRUCTIONS
ORIGINAL INSTRUCTIONS GC1220
PHASE CONVERTER
MODEL NO: PC20
PART NO: 6012785

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INTRODUCTION
Please read these instructions carefully before operating the converter
Thank you for purchasing this CLARKE Single to 3 Phase Converter. i.e. to run 3-
phase asynchronous motors ONLY, from a 230V single phase supply.
Please note that this device, because of its characteristics is for use primarily
with constantly running motors. It is not desirable for use with stop start
operations.
Before using the device, please read this manual thoroughly and carefully
follow all instructions given. This is for your own safety and that of others around
you, and is also to help you achieve long and trouble free service from your
new product.
SPECIFICATIONS
GUARANTEE
This CLARKE product is guaranteed against faulty manufacture for a period of
12 months from the date of purchase. Please keep your receipt as proof of
purchase.
This guarantee is invalid if the product is found to have been abused or
tampered with in any way, or not used for the purpose for which it was
intended.
Faulty goods should be returned to their place of purchase, no product can
be returned to us without prior permission.
This guarantee does not effect your statutory rights.
Dimensions (D x W x H) 260 x 220 x 335 mm
Weight 13.8 kg
Input Voltage 230V AC, ~ 50 - 60Hz,
Max input current 10 Amps
Input current fuse 13 Amps
Input cable size 1.5 mm
Output voltage 3ph 400VAC
Max output 2 HP

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SAFETY
Special care is taken during all stages of manufacture to ensure that your
Clarke Phase Converter reaches you in good condition.
Before using this equipment, it is in your own interest and others around you,
that you read and comply with ALL the information given.
NEVER open or remove any covers on this equipment while it is still connected
to the mains. NEVER operate with any panels open or removed.
NEVER attempt to repair this equipment, unless you are a qualified electrician.
If you do experience any problems which you are unable to safely resolve,
contact your local dealer or Clarke International Service Department on: 020
8988 7400
NEVER use in wet or damp environments.
Whilst this unit has been built to comply with current EMC regulations, the user
is responsible for installing and using it. If electromagnetic disturbances are
detected then it shall be the responsibility of the user to resolve the situation.
In some cases it could involve constructing an electromagnetic screen
enclosing the power source and the work complete with associated input
filters. In all cases electromagnetic disturbances must be reduced to the point
where they are no longer troublesome.
IMPORTANT: HEALTH AND SAFETY AND IEE REGULATIONS MUST BE OBSERVED
AT ALL TIMES.
ENVIRONMENTAL RECYCLING POLICY
Through purchase of this product, the customer is taking on the
obligation to deal with the WEEE in accordance with the WEEE
regulations in relation to the treatment, recycling & recovery and
environmentally sound disposal of the WEEE.
In effect, this means that this product must not be disposed of with general
household waste. It must be disposed of according to the laws governing
Waste Electrical and Electronic Equipment (WEEE) at a recognised disposal
facility.
WARNING: AS WITH ALL MACHINERY, THERE ARE CERTAIN HAZARDS
INVOLVED WITH THEIR OPERATION AND USE. EXERCISING RESPECT AND
CAUTION WILL CONSIDERABLY LESSEN THE RISK OF PERSONAL INJURY.
HOWEVER, IF NORMAL SAFETY PRECAUTIONS ARE OVERLOOKED, OR
IGNORED, PERSONAL INJURY TO THE OPERATOR MAY RESULT.

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INSTALLATION
We would recommend that the installation of this equipment is carried out by
a qualified electrician, who has a full understanding of industrial switching
applications.
It is the users responsibility to provide adequate protection for the intended
motor and to ensure that the supply and cabling is of sufficient capacity to
enable the motor to start without causing undue supply disturbances due to a
voltage drop.
Before installing this equipment, careful consideration must be given to the
location in which it is to be used, also what machinery it is intended to run,
such as drills, lathes, milling machines, circular saws etc.
Once the location has been established, the installation may be carried out as
follows.
ELECTRICAL CONNECTION
Check details on converter rating plate are compatible with the electric
supply and the machine to be driven. (machine details should be found on
the motor data plate).
NOTE: The converter will only supply a 3 phase, 3 line load as standard, if a
neutral is required. Contact your nearest dealer or Clarke Service for
advice.
NOTES:
• Cable sizes above are the minimum sizes for up to 20 metres. For cables
over this length refer to the current IEE regulations.
• Model PC20 is provided with 2M (minimum) of 3-core cable fitted with a
13amp plug, for use with a standard, domestic 13 amp supply.
IMPORTANT: The wires in the mains lead are coloured in accordance with
the following code:
Green & Yellow...........Earth
Blue...........Neutral
Brown...........Live
WARNING: THESE CONVERTERS ARE NOT SUITABLE FOR USE WITH CAR
HOISTS, COMPRESSORS & VACUUM PUMPS DUE TO THEIR HIGH START UP
LOADS.

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As the colours of the flexible cable of this appliance may not correspond with
the coloured markings identifying terminals in your plug, proceed as follows:
• Connect GREEN & YELLOW wire to plug terminal marked with a letter “E”
or Earth symbol “ ”, or coloured GREEN or GREEN & YELLOW.
• Connect BROWN wire to plug terminal marked letter “L” or coloured
RED.
• Connect BLUE wire to plug terminal marked letter “N” or coloured
BLACK.
CONNECTING THE OUTPUT
The output is plugged into the socket (E, Fig. 2), using a 4-pin -plug (not
provided). The illustration below shows the socket configuration.
This unit requires a 16A, 400V (3-pin+ earth) plug which should be wired
ensuring pins L1 and L3 are used for the connections across the motor
windings;- i.e. these are the ‘hot phases’.

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OPERATION
1. Before inserting the output plug,
switch all three switches (G) to
OFF. Then switch the converter
ON, using the ON/OFF switch (A)
on the front panel.
In this condition the lamp (B) and
the rocker switch A will illuminate.
Check to ensure the ammeter (C) is
set to zero. If necessary, adjust
using the small adjustment screw
located at the bottom centre of
the ammeter so that it reads zero.
2. Switch OFF the converter and
connect the plug from the
motor to the output socket (E).
3. Using the three switches (G), set
the output so that it is equivalent
to the HP of the motor to be
driven. This value should be found on the motor data plate.
The chart below shows the switch settings for the required outputs.
4. With the switches set, and the output plugged in, switch ON the converter
and proceed to start the motor/machine. Note that indicator lamp (F) will
illuminate when the switches (G) are set.
DO NOT ADJUST THE SWITCHES (G) WHEN THE PHASE CONVERTER IS SWITCHED
ON.
Model PC20 Motor HP SW 1
0.5HP
SW 2
0.5HP
SW3
1|HP
0.5 ON OFF OFF
0.5 OFF ON OFF
1ON ON OFF
1OFF OFF ON
1.5 ON OFF ON
1.5 OFF ON ON
2ON ON ON

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THERMAL OVERLOAD
Should the unit overheat, the thermal overload will trip, shutting off supply to
the motor/machine. In this event, switch OFF and wait for at least 5 minutes to
allow it to cool before pressing the Reset button (D, Fig.2), and restarting.
You should also investigate the reason for overheating and take the necessary
steps to avoid this re-occuring. If necessary, consult a qualified engineer.
NOTES:
• Please take into account the various losses which are incurred in the
conversion from single to three phase supply. It will be necessary to
select an output from the Converter which is greater than the rated
power of the motor being driven. Ensure also the wiring to the motor is of
sufficient size so as not to incur losses.
• If the machine, which is to be fed from the converter, has a contactor
starter it should be noted that the control circuit should be fed from the
two live phases (pins ‘L1’ and ‘L3 in the socket). Should the contactor
chatter or not operate at all, this indicates that the control circuit is not
fed from lines ‘L1’ and ‘L3’.
• If the control circuit is designed for 230 volts AC, a separate feed for the
control circuit must be provided. Ask a qualified technician if in doubt.
• When using the converter with multispeed machines, care must be take
to allow the machine to slow down before switching from high to low
speeds, If this procedure is not followed, the excess motor, back E.M.F.
could damage both the converter and motor.

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• When reversing the motor, ensure that the motor has stopped fully
before doing so.
• For some applications of small motors or motors of unusual magnetic
characteristics, it may be necessary to provide a pilot motor to obtain a
balance of phases. Generally the pilot motor should be a 2 pole (2800
rpm) motor and as a general guide should be at least twice as big as
the motor to be driven.
If necessary, consult a qualified technician.
PARTS LIST & DIAGRAM
No Description Suppliers No
1 Frame EM21690441
2 Green Pilot Light Switch 16A-250V EM22200039
3 Circuit Breaker 10A EM22210005
4 Ammeter 8A F516 EM 22600045
5 Front Panel EM 33710372
6 Handle EM 21600045
7 Contactor 220V 10A EM 22225006
8 Cover Panel EM 33705460
9 Relay LY2 24VDC EM 22225318
10 Socket For LY2 Relay PTF 80A EM 22225319
11 Orange Pilot Lamp 220V EM 22610013
12 Cable Clamp For Cable Diam.6+ Screw EM 04600233
13 Input Cable 3x1,5 M2,5 W/UK Plug +Fuse 13A EM 20220068
14 Double Pole Black Switch EM 22200043
15 CEE 16A 380V 3PH Socket + Panel Earth EM22105067
16 Capacitor 4.7mf-63V 5x11 P-2 EM26000005
16 W10 Rectifier EM 26014005
17 6k8 Ohm 50W Armoured Resistance EM26031001
18 Auto transformer EM 44145002
19 Capacitor Support EM 33640256

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PARTS LIST & DIAGRAM
20 Lower Panel EM33700265
21 Capacitor MKM 5MF 450V 35x48 EM22315025
21 Capacitor MKM 8MF 450V 30x 78 EM22315026
21 Capacitor MKM 16MF 450V 45 x 80 EM22315028
21 Capacitor MKM 20MF 450V 45x80 EM22315029

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WIRING DIAGRAM

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DECLARATION OF CONFORMITY