Hoyt 1652 IN User manual

INSTRUCTION MANUAL
ANALOGUE INSULATION TESTER
1652 IN

Index
1. Safety Precautions..............................
2. Safety Notes........................................
3. Features..............................................
4. Specifications......................................
5. Why Test is Necessary........................
6. Instrument Layout...............................
7. Simplified Instructions.........................
8. Preparation for Measurement..............
9. Functions ...........................................
10. Battery & Fuse Replacement.............
11. Calibration & Servicing......................
12. Cleaning & Storage...........................
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1. Safety Precautions
Electricity can cause severe injuries even with low voltages
or currents. Therefore it is extremely important that you read
the following information before using your analogue insulation
tester.
1.1 This Instrument must only be used and operated by a
competent trained person and in strict accordance with the
instructions. we will not accept liability for any damage or injury
caused by misuse or non compliance with instructions and
safety procedures.
1.2 This instrument must not be used on live circuits.
Ensure all circuits are de-energised before testing, see
paragraph 1.8 for details of built-in warning features should
your analogue insulation tester be connected to a live system.
1.3 Never open your analogue insulation tester except for
battery replacement. (see battery replacement section)
1.4 Always inspect you analogue insulation tester and test
leads before use for any sign of abnormality or damage.
If any abnormal conditions exist (broken test leads, cracked
case, display faulty etc...) do not attempt to take any
measurement or use the tester. Return your analogue insulation
tester to your nearest distributor for service.
1.5 Never replace the protective fuse with any other
than the specified or approved equivalent
1.6 Your analogue insulation tester has been designed with
your safety in mind. However, no design can completely
protect against incorrect use.
- 1 -

Electrical circuits can be dangerous and / or lethal when
a lack of caution or poor safety practice is used.
Use caution in the presence of voltage above 24V
as these pose a shock hazard.
1.7 Pay attention to cautions and warnings which will
inform you of potentially dangerous procedures.
1.8 Your analogue insulation tester has a live circuit
warning bleeper. If it is connected to an AC live
circuit, a beep of twice the frequency of the
voltage present will be heard.
DO NOT proceed to test and immediately disconnect the
instrument from the circuit. In addition, the warning light
will lit if the voltage is above 100Vdc or 70Vac.
When AC voltage is present, before testing, it's value is
displayed on the AC scale.
2. Safety Notes
Rated environmental condition
(1) Indoor use.
(2) Installation Category .
(3) Pollution Degree 2.
(4) Altitude up to 2000M.
(5) Relative humidity 80% Max.
(6) Ambient temperature 0ºC~40ºC.
Meter is protected throughout by double
insulation or reinforced insulation.
Warning ! risk of electric shock.
Caution ! refer to this manual before using the
meter.
- 2 -

3. Features
● High quality taut band movement.
● Three insulation test voltages:
1- 250Vdc 100MΩ
2- 500Vdc 200MΩ
3- 1000Vdc 400MΩ
● Two continuity test on "Low Ohms": 3Ω / 500Ω
● Small and Lightweight.
● AC voltmeter with linear scale up to 600Vac.
● 200mA continuity short circuit current.
● 1mA test current on insulation test at nominal voltage
● Automatic discharge of capacitance and inductive
circuit off charge stored in the circuit under test.
● Live Warning and display of external voltage presence.
● Fuse and overload protected.
● On line battery monitoring shows if battery is ok.
● Very low battery consumption.
● On-Load battery check (±205mA load for worst case).
● Operates on six 1.5V AA batteries.
● Mirrored scale for easy and accurate reading.
● Push and turn locking switch for long and hand free testing.
● Supplied with high quality test leads.
● Meets: EN 61010-1 CAT III 600V
EN 61326-1
- 3 -

Insulation
Test Voltage 250Vdc 500Vdc 1000Vdc
Output ranges on
open circuit 0~+10%
Measuring range 100MΩ 200MΩ 400MΩ
Mid-scale value 1MΩ 2MΩ 4MΩ
Scale Multiplier x1/2 x1 x2
Accuracy ±5%
Output short-
circuit current Approx. 1.3mA
Continuity
Measuring range3Ω / 500Ω
Test leads / fuse
zero Ω adjustment
by knob
√
Output short-
circuit current ≥200mA
Accuracy ±1.5% of scale length
AC Voltage
AC voltage range 0~600Vac
Accuracy ±3% of full scale
- 4 -

General
Voltage Warning
Warning light circuit live lit from
90Vdc/70Vac.
Buzzer beep from 24Vac/dc.
Power Source 1.5V(AA) x 6
Dimension 163(L) x 106.3(W) x 58.6(H)mm
Weight Approx. 513.5g (battery included)
Accessories
Test leads
Instruction manual
Shoulder belt
Batteries
Carry case
5. Why Test is Necessary
INSULATION
Every electrical apparatus and installation need to be
safe for the user and for the equipment itself.
Electrical conductors of electricity need to be insulated from
each other, so that they do not create electrical hazard or
unnecessary consumption.
Badly insulated circuits can create leakage current which can
be dangerous and trip your GFCI, RCCB or ELCB.
Each country regulate those levels at which the
insulation is acceptable.
Generally, insulation resistance measurements are done
between each conductor and the earth, and between each
conductors.
CONTINUITY
Checking the continuity of wires, complete circuits, connections,
closure of contacts, circuit breakers, fuses, bounding resistance
of connections, etc... Are all very important
- 5 -

- 6 -
TEST Button
Continuity Zero OHM Adjust
Function Selector
HV Indication
Battery OK/ON Indication
Testing terminals
②
①
③
④
⑤
⑥
④
⑥
③
①
②
⑤
6. Instrument Layout 7. Simplified Instructions
WARNING
This instrument must only be used by a competent trained
individual. Consult the full operating instructions. Never press
the test button before connecting test leads to circuit to test.
INITIAL CHECKS
1. Switch to "Batt. Check" and depress the test button. If the
pointer does not move to "BAT. OK", the battery needs to be r
eplaced before proceeding.
2. Connect test leads to instrument, switch to 3Ω.
Press and turn the test button (continuous mode), short the test
Leads. The pointer should swing from infinite towards zero.
If not, the test leads or fuse (0.5A fast acting ceramic)
maybe faulty.
INSULATION TESTS MΩ RANGES
1. Select the desired insulation test voltage range,
250V, 500V, or 1000V.
2. Connect the leads to the instrument and circuit under test.
3. Check the circuit is not LIVE.
4. Press the test button. Read the red MΩ scale directly for
500V, multiply by 0.5 (or divide by 2) for 250V
and multiply by 2 for 1000V.
CONTINUITY TESTS - Ω RANGES
1. Select the desired ohm range, 3Ω or 500Ω.
2. Short the test leads, press test button and adjust the ohms
zero ADJ to zero the pointer on the 0Ω (green scale).
3. Check the circuit is not LIVE.
4. Connect the test leads to the circuit under test.
Press the test button. Read the selected range directly.

7. Simplified Instructions
WARNING
This instrument must only be used by a competent trained
individual. Consult the full operating instructions. Never press
the test button before connecting test leads to circuit to test.
INITIAL CHECKS
1. Switch to "Batt. Check" and depress the test button. If the
pointer does not move to "BAT. OK", the battery needs to be r
eplaced before proceeding.
2. Connect test leads to instrument, switch to 3Ω.
Press and turn the test button (continuous mode), short the test
Leads. The pointer should swing from infinite towards zero.
If not, the test leads or fuse (0.5A fast acting ceramic)
maybe faulty.
INSULATION TESTS MΩ RANGES
1. Select the desired insulation test voltage range,
250V, 500V, or 1000V.
2. Connect the leads to the instrument and circuit under test.
3. Check the circuit is not LIVE.
4. Press the test button. Read the red MΩ scale directly for
500V, multiply by 0.5 (or divide by 2) for 250V
and multiply by 2 for 1000V.
CONTINUITY TESTS - Ω RANGES
1. Select the desired ohm range, 3Ω or 500Ω.
2. Short the test leads, press test button and adjust the ohms
zero ADJ to zero the pointer on the 0Ω (green scale).
3. Check the circuit is not LIVE.
4. Connect the test leads to the circuit under test.
Press the test button. Read the selected range directly.
- 7 -

GENERAL
● For ac voltmeter, do not press test button, this is the
default mode of the instrument.
● AC voltmeter can works without batteries.
● Insulation or continuity mode: for continous operation,
press and turn the test button.
SAFETY PRECAUTION
● The circuit must not be LIVE, conduct initial checks first.
If at any time , the "LIVE"circuit light is lit, or the warning buzzer
sounds - DO NOT PROCEED, the circuit is live.
● Using the instrument in Insulation Mode may leave the circuits
charged up if test leads are removed too quickly.
Avoid this by releasing the test button while the test leads are
still connected to the circuit for a few seconds
8. Preparation for Measurement
Before testing Always check the following.
At Power "ON", check that Bat. OK led lit. and check that there
is no visual damage to the Instrument or test leads.
Check the test Leads continuity:
1. Connect the leads to the Instrument.
2. Zero the test leads while on the 2 ohm range.
3. This will indicate your that continuity of the test leads is OK.
4. Verify that the test leads insulation is in good condition
- 8 -

9. Functions
9.1 Battery Check
Turn the function selector to Batt. Check. This function has
a load which draw about 205mA when test is performed, and
therefore it is doing a worst case battery test.
Then, press the test button, the pointer should be in the
BAT.OK area. During the test, the bat. OK Led (on line battery
check) must lit if the pointer is in the BAT.OK area
9.2 DC Warning
The DC warning buzzer will beep continuously when DC
voltage is higher than 30Vdc on the test probes and the test
button is Not pressed.
The neon light "circuit live" will lit when the voltage on the test
probes is higher than 90Vdc and the test button is not pressed.
9.3 AC Warning
The AC warning buzzer will beep continuously when AC voltage
is higher than 20Vac on the test probes and the test button is
NOT pressed.
The neon light "circuit live" will lit when the voltage on the test
probes is higher than 65Vdc and the test button is NOT pressed.
- 9 -

9.4 AC Measurement
The AC measurement is automatic on this instrument. As soon
as AC voltage is present on the test leads, the instrument will
display the AC voltage from 20 to 600Vac on the linear scale.
When measure AC voltage, the testing duration can not be
more than one minute.
Between each test, the insulation tester needs to have
a 5-minute break.
9.5 Low Ohms Measurement 0 - 3Ω
Always check for voltage before testing and measuring on a
circuit. This instrument is intended for measuring Low Ω and
Insulation resistance on unenergized circuits only.
Use the procedure explained at points 9.2, 9.3, 9.4.
The first procedure to follow, is to zero the test leads and the
fuse resistance. The instrument is equipped with a Zero Ω Knob.
First, short circuit the test leads by connecting them together,
then, press the test button and adjust the zero Ω knob until the
pointer is precisely on the "0" of the 3Ω scale. Use the mirror
scale to be precise with the pointer.
Connect the test leads to the circuit to be measured. For short
test, press button and keep pressed. For long test or hand free
measurements, press and turn the test button.
- 10 -

9.6 Low Ohms Measurement 0 - 500Ω
- 11 -
Always check for voltage before testing and measuring on
a circuit. This instrument is intended for measuring Low Ω and
Insulation resistance on unenergized circuits only.
Use the procedure explained at points 9.2, 9.3, 9.4.
The first procedure to follow, is to zero the test leads and the fuse
resistance. The instrument is equipped with a Zero Ω Knob.
First, short circuit the test leads by connecting them together,
then, press the test button and adjust the zero Ω knob until the
pointer is precisely on the "0" of the 500Ω scale.
Use the mirror scale to be precise with the pointer.
Connect the test leads to the circuit to be measured.
For short test, press button and keep pressed.
For long test or hand free Measurements, press and turn
the test button.

Always check for voltage before testing and measuring on
a circuit. This instrument is intended for measuring Low Ω and
Insulation resistance on unenergized circuits only.
Use the procedure explained at points 9.2, 9.3, 9.4.
Connect the test leads to the circuit to be measured and wait
for a few seconds. The instrument will automatically discharge
any remaining energy which could be present on the circuit,
and will check for voltage at the same time.
Once you are sure that the circuit to be tested is not energized,
then press the button for a short test duration or press and turn
the button for a long test.
Once you end the test, allow a few seconds for the Instrument
to automatically discharge the circuit.
- 12 -
9.7 Insulation Resistance Measurement @ 250Vdc

Always check for voltage before testing and measuring on
a circuit. This instrument is intended for measuring Low Ω and
Insulation resistance on unenergized circuits only.
Use the procedure explained at points 9.2, 9.3, 9.4.
Connect the test leads to the circuit to be measured and wait
for a few seconds. The instrument will automatically discharge
any remaining energy which could be present on the circuit,
and will check for voltage at the same time.
Once you are sure that the circuit to be tested is not energized,
then press the button for a short test duration or press and
turn the button for a long test.
Once you end the test, allow a few seconds for the
instrument to automatically discharge the circuit
- 13 -
9.8 Insulation Resistance Measurement @ 500Vdc

- 14 -
Always check for voltage before testing and measuring on
a circuit. This instrument is intended for measuring Low Ω and
Insulation resistance on unenergized circuits only.
Use the procedure explained at points 9.2, 9.3, 9.4.
Connect the test leads to the circuit to be measured and wait
for a few seconds. The instrument will automatically discharge
any remaining energy which could be present on the circuit,
and will check for voltage at the same time.
Once you are sure that the circuit to be tested is not energized,
then press the button for a short test duration or press and turn
the button for a long test.
Once you end the test, allow a few seconds for the
instrument to automatically discharge the circuit.
9.9 Insulation Resistance Measurement @ 1000Vdc

- 15 -
Fuse
(0.5A/690V, 6x32mm)
Battery
10. Battery & Fuse Replacement
10.1 Battery Replacement
The batteries are situated under the analogue insulation tester.
The BAT.OK LED will not lit when the voltage of the batteries i
s low.
Disconnect the test leads from the Instrument, remove the
battery cover and the batteries.
Replace with six 1.5V R6 or L6 batteries, taking care
to observe the correct polarity.
Replace with the new batteries and put the battery cover back.
10.2 Fuse replacement
Remove the battery cover and the batteries first.
Replace with a new fuse.
Only replace with same specification fuse.(0.5A/690V, 6x32mm)

- 16 -
11. Calibration & Servicing
Contact your nearest distributor about calibration
certificate and servicing.
Before returning the instrument, ensure that:
● the leads have been checked for continuity and
signs of damage.
● the batteries are in good condition.
12. Cleaning & Storage
Periodically, wipe the case with a damp cloth and detergent;
do not use abrasives or solvents.
If meter is not to be used for periods longer than 60 days,
remove the batteries and store them separately
CAT IV - Is for measurements performed at the
source of the low-voltage installation.
CAT III - Is for measurements performed in the
building Installation.
CAT II - Is for measurements performed on circuits
directly connected to the low-voltage installation.
CAT I - Is for measurements performed on circuits not directly
connected to mains.
Due to our policy of constant improvement and development,
we reserve the right to change specifications without notice