Standard Operating Procedure

xxx/SOP/001
Section: 06 Touch Temperature

Sr. Headings Particulars

No.
1 Standard and Clause. IS 16221 (PART-1):2016
Precautions 1. Prior to executing this process, the user must understand the
electronics laboratory and measurement safety practice. The user
must be familiar with the equipments utilized by this process and
must review user manual of the equipment.

3 Test Preparations 1. Apply The Sensor on the Touchable Parts.

2. Operate the EUT as per specified condition.
3. Connect the required load

4 Test Requirements 1. Digital Input Test panel

2. Test Corner
3. Data logger (Temperature sensor)
4. Glass Thermometer.
5. Digital Ohm-Meter.
6. Wheat stone bridge
5. Operating Instructions 1. Connect Device under test to the Panel
2. Fix the Temperature sensor to the Device Under test.
3. Supply the required Test voltage to the device under test.
4. Operates the device under test at normal operating condition till
steady state.
5. After completion of steady state period the rise in temperature is
recorded.

6. Results The maximum temperature for accessible parts of the PCE shall be in
compliance with table 3.

Standard Operating Procedure xxx/SOP/003

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Name: Name : Name:
Designation: Quality Manager Designation: C.E.O Designation: Quality Manager
Amendment No.: 00 Amendment Date:00 Copy No.: 01
 Clearances, Creepage Distances and Distances
Section: 06 through insulation

Sr. Headings Particulars

No.
1 Standard and Clause. IS 16221-1: 2016
(Cl.7.3.7.4/7.3.7.5)

2 Precautions 1. Prior to executing this process, the user must understand the electronics
laboratory and measurement safety practice. The user must be familiar with
the equipments utilized by this process and must review user manual of the
equipment.
3 Test Preparations 1. Calculate working voltage of equipment.

2. Identify overvoltage category.

3. Identify pollution degree and materials group.

4 Test Requirements 1.Vernier caliper
2. Travelling microscope

5. Operating Instructions 1. Moveable parts shall be place in most unfavorable position.

2. Equipment incorporating ordinary NON-DETACHABLE POWER

SUPPLY CORDS, CLEARANCE measurements is made with supply
conductors of the largest cross-sectional area specified in 3.3.4, and
also without conductors.

3. When measuring CLEARANCES from the BOUNDING SURFACE of

an ENCLOSURE of insulating material through a slot or opening in the
ENCLOSURE or through an opening in an accessible connector, the
accessible surface shall be considered to be conductive as if it were
covered by metal foil wherever it can be touched by the test finger
shown in Figure 2A (see 2.1.1.1), applied without appreciable force
(see Figure F.12, point X).

4. Measure Clearances, Creepage distances and Distances through

insulation as per rule of annex F and G.
6. Results 1. Clearance shall comply with table 2K, 2L and 2M.

2. Creepage distances shall comply with table 2N.

Standard Operating Procedure xxx/SOP/004

Prepared BY Approved By Issued By

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Name: Name : Name:
Designation: Quality Manager Designation: C.E.O Designation: Quality Manager
Amendment No.: 00 Amendment Date:00 Copy No.: 01
 Section: 06 Drop Test

Sr. Headings Particulars

No.
1. Standard and Clause. IS 16221-1: 2016 (Cl. 13.7.4)
2. Precautions 1. Prior to executing this process, the user must understand the electronics
laboratory and measurement safety practice. The user must be familiar
with the equipments utilized by this process and must review user
manual of the equipment.
3. Test Preparations 1. Ensure that the hardwood board consist of 13mm thickness, mounted on
two layers of plywood each 19mm to 20mm thick.

2. All supported on a concrete or equivalent non- resilient floor.

4. Test Requirements 1. Hardwood board & plywood board

2. Weighing balance

5. Operating Instructions 1. Place wooden board on a rigid surface

2. The height of the drop shall be:

− 750 mm ± 10 mm for desk-top equipment as described above;
− 750 mm ± 10 mm for MOVABLE EQUIPMENT as described
above;
− 1 000 mm ± 10 mm for HAND-HELD EQUIPMENT, DIRECT
PLUG-IN EQUIPMENT and TRANSPORTABLE EQUIPMENT.
3. The test shall be repeated three times on a horizontal surface in
positions likely to produce the most adverse result.
4. For each drop the test sample shall strike the surface in a different
position

6. Results The sample shall continue to comply with the requirements of 13.7.4.

Prepared BY Approved By Issued By

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Name: Name : Name:
Designation: Quality Manager Designation: C.E.O Designation: Quality Manager
Amendment No.: 00 Amendment Date:00 Copy No.: 01
 Standard Operating Procedure
xxxx/SOP/005
Section: 06 Dielectric Strength

Sr. Headings Particulars

No.
1 Standard and Clause. IS 16221-1: 2016 (Clause 7.5.2)
2 Precautions 1. Prior to executing this process, the user must understand the
electronics laboratory and measurement safety practice. The user must
be familiar with the equipments utilized by this process and must
review user manual of the equipment.
2. Equipment should not connect to supply.
3. Connections are made under OFF Condition of the HV test panel.
4. Do not touch the uninsulated terminals or probes during the test.
5. During the test always use Insulated gloves.
3 Test Preparations 1. Ensure that the tripping switches are working properly.
2. Connect the Device under test to the HV tester.
3. Ensure that the Equipment not operating during this test.
4 Test Requirements 1. High voltage tester
2. Insulated gloves.
3. Stop Watch
4. Metal foil
5. HV shoes.
6. Insulated shoes
5 Operating Instructions 1. Ware safety gloves and HV shoes before test.
2. Switch ON the High Voltage Tester.
3. Set the tripping current for the test
4. The voltage applied to the insulation under test is gradually raised from
zero to the prescribed voltage and held at that value for 60s.

6 Results 1. If Device under test fails in HV Tester, the HV test panel will sound an
alarm and Light of HV test panel turns ON suggesting that the device
Under test has failed.
2. If there is no indication/alarm, it means the device under test has Passed

Standard Operating Procedure xxx/SOP/006

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Page 2 of 2
Name: Name : Name:
Designation: Quality Manager Designation: C.E.O Designation: Quality Manager
Amendment No.: 00 Amendment Date:00 Copy No.: 01
 Section: 06 Impact Test

Sr. Headings Particulars

No.
1. Standard and Clause. IS 16221-1: 2016 (Cl. 13.7.3)
2. Precautions 2. Prior to executing this process, the user must understand the electronics
laboratory and measurement safety practice. The user must be familiar
with the equipments utilized by this process and must review user
manual of the equipment.
3. Test Preparations 1. Place the Sample on the rigid supported surface of the Impact test
apparatus
2. Measure the height of steel ball from the point of impact
4. Test Requirements 1. Impact test apparatus
2. Steel Ball
3. Measuring tape

5. Operating 1. A sample consisting of the complete ENCLOSURE, or a portion

Instructions thereof representing the largest unreinforced area, is supported in its
normal position. A solid smooth steel ball, approximately 50 mm in
diameter and with a mass of 500 g ± 25 g, is permitted to fall freely
from rest through a vertical distance (H) of 1,3 m (see Figure 4A)
onto the sample. (Vertical surfaces are exempt from this test.)
2. In addition, the steel ball is suspended by a cord and swung as a
pendulum in order to apply a horizontal impact, dropping through a
vertical distance (H) of 1,3 m (see Figure 4A) onto the sample.
(Horizontal surfaces are exempt from this test.) Alternatively, the
sample is rotated 90° about each of its horizontal axes and the ball
dropped as in the vertical impact test.
6. Results The sample shall continue to comply with the requirements of 13.7.2,13.7.3

Standard Operating Procedure

xxxx/SOP/009
Section: 06 Limited Power Source

Prepared BY Approved By Issued By

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Name: Name : Name:
Designation: Quality Manager Designation: C.E.O Designation: Quality Manager
Amendment No.: 00 Amendment Date:00 Copy No.: 01
Sr. Heading Particulars
No.
1 Standard and Clause. IS 16221-1: 2016
(Clause 9.2.2)
2 Precautions 1. Prior to executing this process, the user must understand the electronics
laboratory and measurement safety practice. The user must be familiar
with the equipments utilized by this process and must review user
manual of the equipment.
2. Connections are made under OFF Condition of the power supply.

3. Batteries shall be fully charged when conducting the measurements for

open circuit voltage and short circuit current

4. Initially resistive load set at height value to avoid excessive current.

3 Test Preparations 1. Check under normal condition.

2. Check under single fault condition within equipment.
4 Test Requirements 1. Input test panel
2. Variable Resistive load
3. Power analyzer
5. Operating Instructions 1. Apply load to power outlet of equipment by variable resistive load
through power analyzer.
2. Connect equipment input terminal to power supply at required
voltage.
3. After input supply ON decrease resistance and record maximum
outlet power consume by equipment and also check open circuit
voltage and short circuit current.
6. Results Compliance shall comply to table 2B and 2C.

Standard Operating Procedure

xxx/SOP/011
Section: 06 Protection from electric shock

Prepared BY Approved By Issued By

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Name: Name : Name:
Designation: Quality Manager Designation: C.E.O Designation: Quality Manager
Amendment No.: 00 Amendment Date:00 Copy No.: 01
Sr. Headings Particulars
No.
1 Standard and Clause. IS 16221-1: 2016 (Cl.4.4.3.1)
2 Precautions 1. Prior to executing this process, the user must understand the
electronics laboratory and measurement safety practice. The user
must be familiar with the equipments utilized by this process and
must review user manual of the equipment.
2. Connection are made under OFF Condition of the test panel.
3. Do not touch the uninsulated terminals or probes during the test.
3 Test Preparations 1. Locate the all possible hazardous parts by inspection .
2. Ensure that the Equipment not operating during this test.
3. Connection are made by Using appropriate Test probe on to the test
panel
4 Test Requirements 1. Test panel
2. Test probe B
3. Test Probe 13
5. Operating 1. Connect 1st terminal of the Test panel to the accessibility Pin
Instructions 2. Connect 2nd Terminal of the test panel to appropriate Test
Probe/finger.
3. Switch ON the test panel.
4. Set the voltage of test panel at 40Volt using the Knob
5. Now touch all accessible live parts of Device under test using test
probe/finger.
6. Results 1. If there is any hazardous voltage available on access parts, the test
panel will sound an alarm and Light of test panel turns ON
suggesting that the device Under test has failed.
2. ‘If there is no indication/alarm, it mean the device under test has
Passed

Standard Operating Procedure

xxxx/SOP/012
Section: 06 Provision for Earthing

Prepared BY Approved By Issued By

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Name: Name : Name:
Designation: Quality Manager Designation: C.E.O Designation: Quality Manager
Amendment No.: 00 Amendment Date:00 Copy No.: 01
Sr. Headings Particulars
No.
1 Standard and Clause. IS 16221-12016 (Cl.7.3.6.3.3.1)
2 Precautions 1. Prior to executing this process, the user must understand the
electronics laboratory and measurement safety practice. The user
must be familiar with the equipments utilized by this process and
must review user manual of the equipment.
2. Connections are made under OFF Condition of the Multi-test panel.
3. Always Use such type of leads which can sustain the 200% of the
protective current rating of circuit under test is 16A or less.
3 Test Preparations 1. The test was made on OFF position of the Device Under Test.
2. Locate all possible Metal Parts.
3. This test is only applicable to the Class-I appliance.
4 Test Requirements 1. ECRT/ PAES Test Panel
2. Suitable Test leads.
5. Operating 1. Initially Short the Both Leads and apply Current as per requirement
Instructions 2. And Record the Voltage (V1).
3. Then connect the one lead to the Earthing terminal and another to
the accessible metal parts which are Earthed and current as per
requirement and Record the Voltage (V2)
4. Repeat the above two steps for the other accessible metal parts of
the device under test.
6. Results From Voltages (V1 & V2 ) and Current, calculate the Earth Resistance by
the formula, R = V/I,
Where, R = Resistance in Ohm (Ω)
V = Voltage Drop (V2 - V1)
I = Current (Amp)
R = (V2 - V1)/ I
1. If the resistance was more than 0.1 Ω, which means the Device under
test has failed
2. If the resistance was less than 0.1 Ω, it suggest that Device under test
has passed.

Standard Operating Procedure

xxxx/SOP/014
Section: 06 SELV circuit

Prepared BY Approved By Issued By

Page 2 of 2
Name: Name : Name:
Designation: Quality Manager Designation: C.E.O Designation: Quality Manager
Amendment No.: 00 Amendment Date:00 Copy No.: 01
Sr. Headings Particulars
No.
1 Standard and Clause. IS 16221-1:2016
(Clause 7.3.2.5)
2 Precautions 1. Prior to executing this process, the user must understand the
electronics laboratory and measurement safety practice. The user
must be familiar with the equipments utilized by this process and
must review user manual of the equipment.
2. Connections are made under OFF Condition of the power supply.
3 Test Preparations 1.Check under normal condition.
2.Check under fault condition.
4 Test Requirements 1. oscilloscope

5. Operating Instructions 1. Calibrate oscilloscope before use.

2. Check voltage at different parts of circuit.
6. Results 1. In the event of a single fault, the voltages between any two
conductors of the SELV CIRCUIT or CIRCUITS and between any
one such conductor and earth shall not exceed 42.4 V peak, or 60 V
d.c. for longer than 200 ms. Moreover, the voltage shall not exceed
71 V peak or 120 V d.c.
2. For voltages having a repetitive nature after a fault (for example,
from power supplies in “hiccup" mode), additional pulses
exceeding V1 (but not exceeding V2) are permitted under the
following conditions:

− if t1 ≤ 20 ms, t2 shall be greater than 1 s;

− if t1 > 20 ms, t2 shall be greater than 3 s; and
− t1 shall not exceed 200 ms.
3. Only one pulse is permitted to exceed V1 during time period t1, but
it can have any waveform

Prepared BY Approved By Issued By

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Name: Name : Name:
Designation: Quality Manager Designation: C.E.O Designation: Quality Manager
Amendment No.: 00 Amendment Date:00 Copy No.: 01