Martindale Electric Metrohm E3640 Manuale utente

Martindale Electric

Metrohm House, Imperial Park,

Imperial Way, Watford,

Hertfordshire, WD24 4PP, UK

T: 01923 441717

F: 01923 446900

Email: [email protected]

web: www.martindale-electric.co.uk

LITE3640

ISSUE 7 07/07

Metrohm®

E3640

FLASH TESTER

INSTRUCTION MANUAL

Martindale Electric Co Ltd.

Martindale Electric Co Ltd reserves the right to discontinue models at

any time, or to change specifications, price or design, without notice and

without incurring any obligation.

TABLE OF CONTENTS

1. SAFETY RULES

2. DESCRIPTION

2.1 GENERAL

2.2 CONTROLS

3. INSTRUCTIONS FOR USE

3.1 PRELIMINARY CHECKS

3.2 PERFORMING A TEST

4. APPLICATIONS

4.1 PRELIMINARY CHECKS

5. TECHNICAL SPECIFICATION

5.1 ELECTRICAL

5.2 MECHANICAL

5.3 ENVIRONMENTAL

6. SPARES AND ACCESSORIES

7. LIMITED WARRANTY

LIMITED WARRANTY

Martindale Electric Co Ltd warrants instruments and test equipment

manufactured by them to be free from defective material or factory

workmanship and agree to repair or replace such products which, under

normal use and service, reveal the defect to be the fault of our

manufacturing, with no charge for parts and service. If we are unable to

repair or replace the product, we will make a refund of the purchase

price. Consult the Instruction Manual for instructions regarding the

proper use and servicing of instruments and test equipment. Our

obligation under this warranty is limited to repairing, replacing or making

refund on any instrument or test equipment which proves to be defective

within 24 Months from the date of original purchase. Proof of purchase

may be required.This warranty does not apply to any of our products

which have been repaired or altered by unauthorised persons in any way

so as, in our sole judgement, to degrade their stability or reliability, or

which have been subject to misuse, abuse, misapplication, negligence or

accident,or which have had the serial numbers altered, defaced or

removed. Accessories, not of our manufacture, used with this product are

not covered by this warranty.

To register a claim under the provisions of this warranty, return the

instrument or test equipment to Martindale Electric Co Ltd., Metrohm

House, Penfold Trading Estate, Imperial Way, Watford WD24 4YY, UK.

Upon our inspection of the product, we will advise you of the outcome of

your claim.

ALL WARRANTIES IMPLIED BY LAW ARE HEREBY LIMITED TO

A PERIOD OF 24 MONTHS, AND THE PROVISIONS OF THE

WARRANTY ARE EXPRESSLY IN LIEU OF ANY OTHER

WARRANTIES EXPRESSED OR IMPLIED.

The purchaser agrees to assume all liability for any damages and bodily

injury which may result from the use or misuse of the product by the

purchaser, his employees, or others, and the remedies provided for in this

warranty are expressly in lieu of any other liability that Martindale

Electric Co Ltd may have, including incidental or consequential damages.

PAGE

2-3

3-5

5-6

8-9

9-10

-2- -11-

1SAFETY RULES

The E3640 has been designed with safety in mind. However, no design can

completely protect against incorrect use. Electrical circuits can be dangerous and

even lethal through lack of caution or poor safety practices.

1.1 Read the Instruction Manual carefully and completely so that

you fully understand the instructions before using the tester

Follow the instructions in the Manual for every test. Take all the

recommended precautions. Never exceed the limits of the tester.

1.2 The device under test (DUT) must be de-energised and isolated

before connections are made for any tests.

1.3 Check that the Power selector on the tester is set correctly.

1.4 Always set the voltage control to RESET or set the power switch

to OFF before connecting/disconnecting the earth test lead and

the HV gun probe to/from the “DUT”.

1.5 The earth test lead and the HV gun probe must be clean and in

good working order with no broken or cracked insulation.

1.6 The HV gun probe must always be held correctly, with fingers

behind the guard. Never try to defeat the safety trigger mechanism.

1.7 Do not touch the “DUT” during testing with any part of the body.

1.8 Always use the recommended replacement fuses.

1.9 Do not use the tester in wet conditions.

2.0 Please ensure the test lead is pushed fully into the test socket and

locked in position prior to carrying out any tests.

NOTE: This tester should only be used by a competent, suitably trained

person.

Bump Test IEC 68-2-29

Vibration Test: BS EN 61010 - clause 8.3

Impact Test: BS EN 61010 - clause 8.2

Drop Test: BS EN 61010 - clause 8.4

5.3 ENVIRONMENTAL

Operating Temperature: -15ºC to +55ºC

Storage Temperature: -25ºC to +65ºC

Operating Humidity: 80% RH at 40ºC

Cold Temperature: IEC 68-2-1

Dry Heat: IEC 68-2-2

Damp Heat: IEC 68-2-3

Installation Category II: BS EN 61010 - Annex J

Pollution Degree 2: BS EN 61010 - clause 3.7.3.2

6. SPARES AND ACCESSORIES

Mains Power Supply Lead: MARTL205

Earth Lead: METDFH 0366

HV Gun Probe: METDFH 0369

-10- -3-

2 DESCRIPTION

2.1 GENERAL

The E3640 is an AC flash tester for leakage and breakdown testing. It is

designed for voltage testing of electrical apparatus, components and

insulating materials.

The tester is housed in a rugged, moulded plastic case with integral

carrying handle. The hinged detachable lid is fitted with a pouch which

contains all accessories and the instruction manual. All operating

functions are mounted on a panel underneath the protective lid.

A two position power selector adjusts the tester to operate from 115 or

230V ±15% 50/60Hz.

The tester has an output AC test voltage which may be set in the range 0

to 4kV by adjusting the voltage control. The mode select switch allows

the selection of either breakdown, trip or burn. Leakage current passing

through the “DUT” is detected. In the breakdown mode the high

frequency current will cause the tester to trip. In the trip mode the tester

will trip if the current exceeds the trip level setting (0 to 3mA) of the trip

level control or if breakdown occurs. However, when the burn mode is

selected the trip does not occur and the output voltage is maintained but it

reduces as current increases.

When the tester trips the fail lamp will illuminate, a buzzer will sound

and the ‘kVON’ lamp will extinguish. The output voltage will drop to

zero but the output voltage and the leakage current at the instant of trip

will be held on their respective displays. To reset the tester the voltage

control is rotated anti-clockwise to the reset position.

If the tester is switched on when the voltage control is not in the reset

position the HV output is inhibited and the ‘kV ON’ lamp will not illuminate.

Turning the voltage control to reset will activate the HV circuits.

Maximum output voltages of 2.2kV and 4.2kV are set such that if these

Trip Level Range: 0.3 to 3mA 50/60Hz

Setting Accuracy: ±5% of full

Trip Response Leakage: Will trip for fault duration >5mS

but not for <100μS

Breakdown: Will trip for fast transients of

30μS and above

Safety: LVD:Meets BS EN 61010-1

EMC:Meets BS EN 50081-1

BS EN 50082-2

Output Terminal Characteristics:

E3640 OUTPUT CHARACTERISTICS

5.2 MECHANICAL

Case Dimensions: 330 x 263 x 144mm

Case Material: ABS

Weight: 4kg

-4- -9-

limits are exceeded the output will shut down until the voltage control is

turned to reset. Illuminated displays show that the tester is switched on and

the ‘kV ON’ lamp indicates that high voltage may be present at the outlet.

The HV gun probe has been designed with operator safety as the prime

consideration. The trigger for the retractable high voltage probe sleeve is

situated behind the finger guard and the integral lead is terminated in a

custom designed high voltage safety connector.

2.2 CONTROLS (Fig. 1 Refers)

2.2.1 VOLTAGE

This control adjusts the output of the electronic AC regulator between

reset and maximum, 2kV or 4kV which ever is selected. The reset

position is used to re-energise the high voltage output circuit after

exceeding the maximum level or after power switch on. Reset is also

used to reset the trip circuit after a failure of the “DUT”.

2.2.2 VOLTAGE SELECT

A two way switch allows 0-2kV or 0-4kV to be selected.

4.APPLICATIONS

4. 1 PRELIMINARY CHECKS

The E3640 flash tester is ideal for flash and applied AC voltage testing of

all kinds of electrical and electronic equipment and components.

Requirements for testing are contained in many British and International

standards and in the sixteenth edition of the IEE Wiring regulations

(BS7671).

Testing is mainly carried out on factory assemblies, but if an on-site repair

is carried out or a factory assembled item is fitted on site then the same

tests are carried out.

Please ensure the test lead is pushed fully into the test socket and locked in

position prior to carrying out any tests.

5.TECHNICAL SPECIFICATION

5.1 ELECTRICAL

Power Requirement: 230 Volts ±15% 50/60Hz

40VA selectable

115 Volts ±15% 50/60Hz

40VA selectable

Fuses: 230V - 5x20mm 0.25A, HBC, Type F

115V - 5x20mm 0.5A, HBC, Type F

Output Voltage Range: 0.2 - 2.2, 0.2 - 4.2kV 50/60Hz

Output Voltage Accuracy: ± 2% of reading ± 1 digit

Leakage Current Range: 0 - 5 mA (nominal) 50/60Hz in

10μA steps

Leakage Current Accuracy: ±2% of reading ± 1 digit

-8- -5-

2.2.3 MODE SELECT

Three modes of operation are selectable.

Breakdown:- The tester will trip should breakdown occur in the

“DUT” (high frequency leakage currents).

Trip:- This position switches in a level detector whose input is

variable over the range 0 to 3mA. The tester will trip if

the leakage current in the“DUT” exceeds the level that

is set. The tester will also trip for breakdown.

Burn:- The tester will not trip in this mode regardless of

breakdown or leakage currents but the ‘burn' current is

limited to a nominal 5mA.

2.2.4 TRIP LEVEL

This control sets the level on the trip detector that must be exceeded

before a failure of the “DUT” is indicated.

2.2.5 POWER INLET

This multi-function item combines an IEC inlet with a double pole

switch, fuse drawer and 115/230 volt mains power selector.

2.2.6 INDICATORS

kV ON:- A red lamp which indicates that the high voltage output

circuit is energised.

Fail:- A red lamp which indicates that the “DUT” has failed

and the trip has triggered. A buzzer sounds in unison

with the fail lamp to give an audible indication that the

“DUT” has failed.

2.2.7 DISPLAYS

Output Voltage kV:- The voltage applied to the “DUT” is displayed and

the value at failure is held until the tester is reset.

Leakage Current mA:- Leakage current through the “DUT” is displayed

and the value at failure is held until the tester is reset.

To clear the displays the output voltage control is returned to reset.

NOTE: a) In the burn mode the trip circuit is inoperable and the

tester will continue to drive current into a fault. The

fault current is limited to a nominal 5mA and the output

voltage will decrease with increase in current.

b) In the breakdown mode if excessive current is drawn by

the “DUT” the desired output voltage may not be

achieved. The specification for the “DUT” would then

have to be checked to decide on the validity of the test.

The leakage current is not displayed in this mode.

c) It is advisable to return the output voltage control to

reset before switching off the tester.

d) During applied voltage tests the current which flows

into and across the surface of the “DUT” is the leakage

current and is the resultant of two components:-resistive

and reactive. Resistive current is that which flows as a

result of losses in the insulation of the “DUT”. Reactive

current is that which flows as a result of capacitance in

the “DUT” and will increase with increase in

capacitance. It must be taken into account when

carrying out an applied AC voltage test.

e) If the voltage select switch is operated when the voltage

control is not at the “Reset” position, the HV circuit

will de-energise and it will be necessary to return the

voltage control to “Reset” to reactivate the HV circuit.

Trip:- In the trip mode, mains frequency currents associated

with leakage and short circuits and high frequency

arcing currents that are produced by breakdown are

detected. Set the trip level to the required current by

adjusting the control potentiometer.

Burn:- In this mode the tester will not trip regardless of any

failure mode in the “DUT”. Current will continue to

flow allowing faults to be traced by observing the

resulting arcing.

3.2 PERFORMING A TEST

3.2.1 Attach the spade connector of the earth lead to the earth terminal

( ) on the tester and the crocodile clip to the earth (reference) point

of the “DUT”.

3.2.2 Insert the HV gun probe into the HV socket and select 2kV or

4kV output voltage as required.

3.2.3 Set the voltage control fully anti-clockwise to reset and switch

on the tester. The ‘kV ON’ lamp will illuminate indicating that the

high voltage circuit is energised.

3.2.4 Touch the HV gun probe onto the test point of the “DUT” and

slowly rotate the voltage control clockwise until the value indicated

on the display reaches the recommended test voltage for the“DUT”.

3.2.5 Maintain this voltage for the desired length of time. If, during

this test period, the voltage is steady and the failure indicators do not

energise (fail lamp and buzzer) then the “DUT” has passed its test.

The recommended test time is 1 minute according to BSEN 61010.

3.2.6 A failure of the “DUT” will result in the fail lamp illuminating

and the buzzer sounding. The ‘kV ON’ lamp will extinguish but the

voltage and leakage current at the instant of failure will by held on the

displays. Measurements can then be recorded accurately for each item

tested.

-6- -7-

2.2.8 HIGH VOLTAGE SOCKET

This unique safety socket has an interlock which prevents accidental

disconnection of the HV gun probe lead.

3. INSTRUCTIONS FOR USE

3.1 PRELIMINARY PROCEDURE

NOTE: OBSERVE ALL SAFETY RULES AT ALL TIMES.

3.1.1

The tester can be powered from 115 or 230V +15% 50/60Hz. Ensure that the

power source available is compatible with the voltage setting on the tester.

To change the setting, remove the fuse drawer using a small screwdriver

and pull out the fuse holder. Fit a 5 x 20mm 0.25A type HBC fuse for 230

volt operation or a 0.5A of the same type for 115 volt operation. Insert the

fuse holder so that the desired voltage shows in the drawer window, then

replace the drawer.

NOTE: If the voltage selector is not set correctly then the tester may be

damaged.

Connect the mains lead to the power inlet and plug it into a suitable power

outlet. If the neon to the right of the inlet socket lights, reverse the plug in

the socket

3.1.2

Select the mode of operation; either breakdown, trip or burn.

Breakdown:- When this mode is selected the trip circuit responds to

high frequency currents produced by arcing faults only.

Note: If there is a short on the “DUT” there will be no

indication on the displays and the trip mode should be

selected.

NOTE: Leakage currents are not displayed when the break down mode is

selected.

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