Martindale Electric PC15250 Mk2 User manual

PC15250 Mk2
PHASE SEQUENCE INDICATOR
Instruction
Manual

GENERAL SAFETY INFORMATION: Always read before proceeding.
Warning
These instructions contain both information and warnings that are necessary for
the safe operation and maintenance of this product. It is recommended that you
read the instructions carefully and ensure that the contents are fully understood.
Failure to understand and to comply with the warnings and instructions can result
in serious injury, damage or even death.
In order to avoid the danger of electrical shock, it is important that proper safety
measures are taken when working with voltages exceeding 30V AC rms, 42V AC
peak or 60V DC.
This product must only be used by a competent person capable of interpreting the
results under the conditions and for the purposes for which it has been constructed.
Particular attention should be paid to the Warnings, Precautions and Technical
Specications. Always check the unit is in good working order before use and that
there are no signs of damage to it. Do not use if damaged.
Where applicable other safety measures such as use of protective gloves, goggles
etc. should be employed.
If the equipment is used in a manner not specified by Martindale Electric, the
protection provided by the equipment may be impaired.
Please keep these instructions for future reference. Updated instructions and
product information are available at: www.martindale-electric.co.uk
REMEMBER: SAFETY IS NO ACCIDENT
MEANING OF SYMBOLS:
Equipment complies with relevant EU Directives
Equipment complies with relevant UK Conformity
Assessed marking
End of life disposal of this equipment should be
in accordance with relevant EU Directives
Caution - risk of electric shock
Caution - risk of danger & refer to instructions
Equipment protected by double or reinforced insulation (Class II)
Three-phase alternating current
3

Thank you for buying one of our products. For safety and full
understanding of its benets please read this manual before use.
Technical support is available from 01923 441717 and
[email protected].
CONTENTS
1 Introduction 1
1.1 Inspection 1
1.2 Description 1
1.3 Accessories 1
2 Product Specic Safety Information 2
2.1 Precautions 2
3 Operation 4
3.1 Description of LED Indicators 4
3.2 Use of Test Probe Shrouds 4
3.3 Proving Check 4
3.4 Testing a 3 Phase Distribution System 5
3.5 Wiring Colour Coding 8
4 Maintenance 9
4.1 Fuse Replacement 9
4.2 Cleaning 9
4.3 Repair & Service 9
4.4 Storage Conditions 9
5 Warranty 10
Specications

1
1. INTRODUCTION
1.1 Inspection
Examine the shipping carton for any sign of damage. Inspect the
unit and any accessories for damage. If there is any damage then
consult your distributor immediately.
1.2 Description
The PC15250 is designed to quickly and simply prove the presence
of all three phases on a distribution system and indicate the phase
sequence.
It is ideal for identifying worn or unmarked cables or ensuring
motors etc. are wired with the correct phase sequence.
The retractable GS38 probe shields give a choice between longer
exposed tips for reaching inaccessible contacts and safer, shorter
lengths for increased safety.
1.3 Accessories (included)
• Instructions

2
2. PRODUCT SPECIFIC SAFETY INFORMATION
Measurement Category IV (CAT IV) is applicable to test and
measuring equipment connected at the source of the building’s low-
voltage MAINS installation.
The specied measurement category means the phase sequence
indicator will be safe to the user if inadvertently connected to a voltage
up to 600V AC/DC to earth within a CAT IV environment. It does
not mean it can be used to test for a voltage beyond its maximum
specied limits.
2.1 Precautions
This product has been designed with your safety in mind, but please
pay attention to the following warnings and cautions before use.
Warning
The phase sequence indicator must only be used by a skilled and
competent person who is familiar with the relevant regulations,
the safety risks involved and the consequent normal safe working
practices.
Before use check the unit for cracks or any other damage. The cables
have black outer and contrasting inner insulation, to allow damage to
the cables to be easily identied. If there is any doubt the unit should
not be used.
Always verify the unit is functioning correctly on a known correctly
sequenced 3-phase voltage source before and after use. Do not use
the unit if the unit does not give the correct indications.
Always keep your ngers behind the test probe nger guards. Never
touch the exposed metal probe tips.

3
The socket tester is not intended to determine if circuits being
tested are dead. The correct testing methods should be used to do
this.
If the LED indicators do not illuminate, this does not necessarily
mean all three phases under test are dead. Two phases could be
open circuit, but one phase could still be live.
Caution
Avoid severe mechanical shock or vibration and extreme
temperature.

4
OPERATION
3.1 Description of LED Indicators
L1 L2 L3
THREE LIT: CORRECT
ONE LIT: THAT PHASE FAULTY
PHASE
PHASE SEQUENCE
L1
L2
L3
L1
L2
L3
* Both phase sequence LED’s are illuminated if a phase is missing.
3.2 Use of Test Probe Shrouds
The shrouds around the L1 and L2 test probes are normally sprung
forwards to IP 2X rating and are retractable.
For optimum safety, the shrouds should be allowed to spring forward
freely whenever the probe tips are removed from a location under test.
If desired, and before the unit is connected to any source of voltage, the
shrouds can be locked back by pushing and twisting 90°.
The probe tips will be exposed by 3 ± 0.5mm. In this position they are
GS38 compliant.
3.3 Proving Check
Before and after use, verify the unit is functioning correctly on a known
correctly sequenced 3-phase voltage source of 50V to 600V phase to
phase, and frequency of 40Hz to 60Hz.
All phases present when all
three LED’s illuminated
One LED illuminated
indicates the respective
phase is missing
Incorrect phase
sequence of L1,
L3, L2 when
illuminated*
Correct phase
sequence of L1,
L2, L3 when
illuminated*

5
Connect the L1, L2 and L3 test probes respectively to the L1, L2 and
L3 phases of the voltage source.
The PC15250 must indicate as shown below.
L1, L2 & L3 LED’s must illuminate red
Phase Sequence L1 L2 L3 LED must
illuminate red
Phase Sequence LED L1 L3 L2 LED
must be extinguished
L1 L2 L3
THREE LIT: CORRECT
ONE LIT: THAT PHASE FAULTY
PHASE
PHASE SEQUENCE
L1
L2
L3
L1
L2
L3
Do not use the unit if the unit does not give the correct indications
above.
During this verication emphasis should also be placed upon the
exing of the individual cables along their length, and particularly at
the entry points to the hand held elements, to conrm that the cable/s
have not fractured.
3.4 Testing a 3 Phase Distribution System
Take all required safety precautions when connecting the test probes
to the 3-phase electrical distribution system to be tested.
1. The three test probes are marked L1, L2, L3. These relate to the
L1, L2, L3 LED’s on the instrument facia.
2. To determine phase presence and phase sequence, connect
the test probes to the phase cables of the 3-phase electrical
distribution system to be tested. Refer to table 2 of section 3.5 to
determine to which cables to connect L1, L2 and L3 (see Note 2).

6
3. Turn on the power to the circuits being tested where necessary.
4. Refer to table 1 to determine the phase presence and the phase
sequence of the wiring being tested.
If all phases are present then all phase LED’s and the relevant phase
sequence LED will illuminate. (see Note 3).
If a phase is missing then only the LED of the missing phase will
illuminate. The phase sequence LED’s should be ignored when a
phase is missing.
Warning
Where a 3-phase distribution system is found to have a wiring error,
maintenance should only be carried out by a competent electrician
who is familiar with the relevant regulations, the safety risks involved
and the consequent normal safe working practices.

7
PC15250 Indication Wiring Condition
L1 L2 L3
THREE LIT: CORRECT
ONE LIT: THAT PHASE FAULTY
PHASE
PHASE SEQUENCE
L1
L2
L3
L1
L2
L3
L1, L2 & L3 LED’s
illuminate red.
Phase Sequence L1L2L3
LED illuminates red.
(See Note 1)
All phases present.
Phase sequence is
L1, L2, L3.
L1 L2 L3
THREE LIT: CORRECT
ONE LIT: THAT PHASE FAULTY
PHASE
PHASE SEQUENCE
L1
L2
L3
L1
L2
L3
L1, L2 & L3 LED’s
illuminate red.
Phase Sequence L1L3L2
LED illuminates red.
(See Note 1)
All phases present.
Phase sequence is
L1, L3, L2.
L1 L2 L3
THREE LIT: CORRECT
ONE LIT: THAT PHASE FAULTY
PHASE
PHASE SEQUENCE
L1
L2
L3
L1
L2
L3
L1 illuminates red.
Ignore phase sequence
LED’s.
Phase L1 is missing.
L1 L2 L3
THREE LIT: CORRECT
ONE LIT: THAT PHASE FAULTY
PHASE
PHASE SEQUENCE
L1
L2
L3
L1
L2
L3
L2 illuminates red.
Ignore phase sequence
LED’s.
Phase L2 is missing.
L1 L2 L3
THREE LIT: CORRECT
ONE LIT: THAT PHASE FAULTY
PHASE
PHASE SEQUENCE
L1
L2
L3
L1
L2
L3
L3 illuminates red.
Ignore phase sequence
LED’s.
Phase L3 is missing.
L1 L2 L3
THREE LIT: CORRECT
ONE LIT: THAT PHASE FAULTY
PHASE
PHASE SEQUENCE
L1
L2
L3
L1
L2
L3
All LED’s illuminated red.
Two test probes
possibly connected
to the same phase.
Table 1

8
Note: Neutral and earth connections are not tested. The tests will
not simulate your normal usage load.
Note 1: If none of the LED’s illuminate, this does not necessarily
mean all three phases under test are dead. Two phases
could be open circuit, but one phase could still be live.
Note 2: The colours of the cables under test cannot be relied upon
to conform to the expected phases.
Note 3: This instrument only conrms the presence of live phases
and the phase sequence in the location being tested. E.g.
A phase marked as “L1” elsewhere in the xed installation
may not be the same phase as one marked as “L1” in the
location being tested. That must be veried by separate
tests to conrm absence of phase offset.
3.5 Wiring Colour Coding
In April 2004 the colour coding of UK wiring was harmonised with
the IEC wiring colour code. Table 2 shows the old UK colour code
and the new IEC colour code.
Earth Neutral Line 1 Line 2 Line 3
Old UK
Colours
Green/
Yellow Black Red Yellow Blue
New IEC
Colours
Green/
Yellow Blue Brown Black Grey

9
4. MAINTENANCE
4.1 Fuse Replacement
To avoid shock, injury or damage to the voltage indicator,
disconnect it from any external circuits before proceeding.
Replace only with the fuse specied. Martindale order code:
FUSE500 (pack of 3).
The PC15250 is tted with three 600V 0.5A 50kA HRC rated fuses
(6x32mm), one in each probe. They can be replaced by unscrewing
the probes as show below.
4.2 Cleaning
The unit may be cleaned using a soft dry cloth. Do not use moisture,
abrasives, solvents, or detergents, which can be conductive.
4.3 Repair & Service
There are no user serviceable parts in this unit other than those that
may be described in section 4. Return to Martindale Electric if faulty.
Our service department will quote promptly to repair any fault that
occurs outside the guarantee period.
Before the unit is returned, please ensure that you have checked the
unit and fuses.
4.4 Storage Conditions
The instrument should be kept in warm dry conditions away from
direct sources of heat or sunlight, and in such a manner as to
preserve the working life of the unit. It is strongly advised that the
unit is not kept in a tool box where other tools may damage it.

10
5. WARRANTY AND LIMITATION OF LIABILITY
This Martindale product is warranted to be free from defects in
material and workmanship under normal use and service. The
warranty period is 2 years and begins on the date of receipt by the
end user. This warranty extends only to the original buyer or end-
user customer, and does not apply to fuses, disposable batteries,
test leads or to any product which, in Martindale’s opinion, has been
misused, altered, neglected, contaminated, or damaged by accident
or abnormal conditions of operation, handling or storage.
Martindale authorised resellers shall extend this warranty on new and
unused products to end-user customers only but have no authority to
extend a greater or different warranty on behalf of Martindale.
Martindale’s warranty obligation is limited, at Martindale’s option, to
refund of the purchase price, free of charge repair, or replacement of
a defective product which is returned to Martindale within the warranty
period.
This warranty is the buyer’s sole and exclusive remedy and is in lieu
of all other warranties, expressed or implied, including but not limited
to any implied warranty of merchantability or tness for a particular
purpose. Martindale shall not be liable for any special, indirect,
incidental or consequential damages or losses, including loss of data,
arising from any cause or theory.
Since some jurisdictions do not allow limitation of the term of
an implied warranty, or exclusion or limitation of incidental or
consequential damages, the limitations and exclusions of this warranty
may not apply to every buyer. If any part of any provision of this
warranty is held invalid or unenforceable by a court or other decision-
maker of competent jurisdiction, such holding will not affect the validity
or enforceability of any other provision or other part of that provision.
Nothing in this statement reduces your statutory rights.

Specication
PC15250 Mk2
Phase Sequence Indicator
Electrical
Input voltage range: 50V to 600V AC (Phase to Phase)
Input frequency: 40 to 60Hz
Input current: < 3mA
Environmental
Location: Suitable for indoor use, and outdoor use in dry
weather conditions only.
Altitude: up to 2000m
Temperature (Operating & Storage): -10°C to 55°C
Humidity (Operating & Storage): ≤ 85% R.H
Pollution Degree: 2
General
Power: from circuit under test
Fuses: 600V 0.5A 50kA HRC rated fuses (6x32mm) x 3, one in each probe
Dimensions: 116(L) x 69(W) x 25(D) mm
Weight packed: 361g approx
Includes: instructions
Safety
Conforms to GS38 & BS EN61557-7, CAT IV 600V
Class II, Double Insulation
EMC
Conforms to BS EN61326-2-2

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Due to policy of continuous development, Martindale Electric reserves the right to alter
equipment specification and description outlined in this document without prior notice.
No part of this document shall be deemed to be part of any contract for the equipment
unless specifically referred to as an inclusion within such contract. © 2022 Martindale
Electric Co. Ltd. Registered in England No. 3387451. LITPC15250
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Imperial Way, Watford WD24 4PP. T: 01923 441717 F: 01923 446900
www.martindale-electric.co.uk [email protected]