Full Text
REGD. No. D. L.-33004/99
The Gazette of India
CG-DL-E-10032025-261539
EXTRAORDINARY
PART I-Section 1
PUBLISHED BY AUTHORITY
No. 72]
NEW DELHI, MONDAY, MARCH 10, 2025/PHALGUNA 19, 1946
MINISTRY OF HEAVY INDUSTRIES
ORDER
New Delhi, the 10th March, 2025
F. No. 8(1)/2018-HEI-Part (1).—Product Specific Guidelines for Low Voltage Switchgear and
Controlgear: Control circuit devices and switching elements Electromechanical control circuit devices
conforming to IS/IEC 60947-5-1: 2016 under Electrical Equipment (Quality Control) Order and subsequent
amendments made from time to time.
1.
This Product Specific Guidelines /sampling shall be used for the purpose of grant of licence /change in scope
of licence for Low Voltage Switchgear and Controlgear: Control circuit devices and switching elements -
Electromechanical control circuit devices conforming to IS/IEC 60947-5-1 : 2016 under Electrical Equipment (Quality
Control) Order, 2020 and subsequent amendments made from time to time and as per the procedure defined by Bureau
of India Standards, accordingly.
2.
For purpose of obtaining the licence / change in scope of licence from the Bureau, Manufacturer shall apply to
Bureau of Indian Standards ascertaining the scope of licence and technical file including test reports(s) / certificates(s),
etc. as per the procedure defined by the Bureau of Indian Standards under the Conformity Assessment Scheme as
mentioned in the under Electrical Equipment (Quality Control) Order and subsequent amendments made from time to
time ensuring the minimum number of sample(s) in respect of a product series/range or group.
3. Product Grouping
3.1 Product series of equipment(s): A group of Electromechanical control circuit devices or switching elements
intended for controlling, signalling, interlocking, etc., of switchgear and controlgear. as defined in 4.2.1 and 4.2.2 of
IS/IEC 60947-5-1: 2016; referred to a particular type designation with a unique combination of feature(s) under
classification mentioned in Table A at Annexure -I.
4. Sampling and Testing
4.1. Sampling and Testing: The type test for each product series shall be as below:
4.1.1. For each product series, the type test report for control circuit device or switching elements with maximum
features and configurations satisfying all the operational performance criteria shall be tested. The tests and sample(s)
must be in accordance with the clause 8.3.1 of IS/IEC 60947-5-1: 2016.
4.1.2. Type tests are grouped together in number of test sequences, the test shall be done as per the sequence and
applicability defined in each test sequence as defined in 8.3.1 of IS/IEC 60947 -5-1 :2016. More than one test sequence
or all test sequences may be conducted on one sample at the request of the manufacturer. However, the tests shall be
conducted in the sequence given for each sample above.
Note- Spares, accessories and sub-assemblies are integral part of product series. They shall be tested as far as
possible with the equipment. (Spares and sub-assemblies being the integral part of the device, separate testing
is not envisaged; Accessories may please be used while testing.)
In case, the accessories are complying to the requirement of any other standard (IS/IEC 60947 series) then
accessories shall meet the requirements of the respective Indian Standards.
4.1.3. Each Product rating(s) / varieties may not be subjected to testing. Product samples as mentioned in para 4.1.4
will cover all the product rating(s) / varieties having ratings lower or equal under the scope of Licence is by virtue of
this grouping guidelines.
4.1.4 In order to reduce multiple testing for the same type of control circuit devices or switching elements, following
simplified test procedure shall be used:
a) For Test sequence I (as per 8.3.1 IS/IEC 60947 5-1:2016): In case of control circuit device having provision of
multiple configurations of switching elements having similar construction, then sample with maximum
possible numbers of switching elements shall be tested.
Example: A four pole control circuit device having provisions of configurations – 4NO, 3NO+1NC,
2NO+2NC, 1NO+3NC, 4NC etc.; tested with maximum severity (all switching elements that may be
simultaneously closed) shall cover all other configurations.
b) For other Test sequence(s) (as per 8.3.1 IS/IEC 60947 5-1:2016): For Making & Breaking Capacities Tests and
Short Circuit tests: Tests shall be carried out on a single-pole element or on one pole of a multi-pole device
provided that all pole elements are identical in construction and operation.
c) In case of control circuit devices or switching elements marked claiming more than one utilization category
then higher utilisation under the most severe conditions shall be tested. Control switching elements marked
with both AC & DC utilization category shall be tested separately for AC as well as DC supply.
d) Tests performed at 50 Hz are deemed to cover 60 Hz applications and vice versa.
e) In case of multiple rated operational voltages (Ue) & rated operational currents (Ie) for a single utilization
category; Making & breaking capacities tests will be conducted on the rating with highest VA (Ue x Ie).
f) Tests performed with different terminal designs. Where control circuit device or switching elements is designed
to be provided with different designs of terminal, additional test(s) shall be done as per Test sequence I (IS/IEC
60947 5-1:2016) along with Measurement of clearances and creepage distances(7.1.4 of IS/IEC 60947-5-1:
2016), if applicable
g) For indicator lights and indicating towers, type tests conducted on samples with highest rated power will cover
all the other rating(s) / varieties having lower or equal rated power.
4.1.5 However, for cases as mentioned in Table B, Annexure-II, all type tests are not required to be conducted; if
applicable only selected type tests will be conducted for inclusion of the same under scope of licence.
VIJAY MITTAL, Jt. Secy.
Annexure -I
Table A. Classification of Electromechanical Control Circuit Device
+-------+------------------------------------------+-----------------------------------------------+
| Sr. No.| Classification based on | Type of Equipment |
| | | |
| | Classification as per Clause 3 & 4 of | |
| | IS/IEC 60947-5-1: 2016 | |
+=======+==========================================+===============================================+
| 1.a) | Kind of control circuit device | - manual control switches, e.g. push-buttons, |
| | | rotary switches, foot switches |
| | | - electromagnetically operated control |
| | | switches, either time delayed or |
| | | instantaneous, e.g. contactor relays |
| | | - pilot switches, e.g. pressure switches, |
| | | temperature sensitive switches |
| | | (thermostats),programmers, etc |
| | | - position switches |
| | | - associated control equipment, e.g. |
| | | indicator lights, etc. |
+-------+------------------------------------------+-----------------------------------------------+
| | And/or | |
+-------+------------------------------------------+-----------------------------------------------+
| 1. b) | Kind of switching elements | - auxiliary contacts of a switching device |
| | | (e.g. contactor, circuit breaker, etc.) |
| | | which are not dedicated exclusively for |
| | | use with the coil of that device; |
| | | - interlocking contacts of enclosure doors; |
| | | - control circuit contacts of rotary switches;|
| | | - control circuit contacts of overload relays.|
+-------+------------------------------------------+-----------------------------------------------+
| 2. | Type of Contact element | Form A - Single gap make-contact element; |
| | | Form B - Single gap break-contact element; |
| | | - Form C - Single gap make-break three |
| | | terminal change-over contact element; |
| | | Form X - Double gap make-contact element; |
| | | Form Y - Double gap break-contact element; |
| | | Form Z - Double gap make-break four terminal |
| | | change-over contact element |
| | | Other if not mentioned above. |
+-------+------------------------------------------+-----------------------------------------------+
| 3. | Interrupting medium | - air, - oil, - gas, - vacuum etc. |
+-------+------------------------------------------+-----------------------------------------------+
| 4. | Method of operation | manual |
| | | electromagnetic |
| | | pneumatic |
| | | electro-pneumatic |
+-------+------------------------------------------+-----------------------------------------------+
| 5 | Method of control | automatic |
| | | non-automatic |
| | | semi-automatic |
+-------+------------------------------------------+-----------------------------------------------+
| 6 | Degree of protection provided (IP Code) | According to Annex C of IS/IEC 60947-1 |
+-------+------------------------------------------+-----------------------------------------------+
| | Operational Characteristics | |
+-------+------------------------------------------+-----------------------------------------------+
| 7 | Number of poles | 1P, 2P, 3P, 4P, etc.. |
+-------+------------------------------------------+-----------------------------------------------+
| 8 | Kind of current | ас, |
| | | dc, |
| | | ac & dc |
+-------+------------------------------------------+-----------------------------------------------+
| 9 | Utilization category | AC-12, AC-13, AC-14, AC-15 |
| | | DC-12, DC-13, DC-14 |
+-------+------------------------------------------+-----------------------------------------------+
For Example
Product series 1: Manual control switches - Push Buttons – XXXX (Type designation), Form X & Form Y, Air-
Break type, Manual Operated, Non-automatic controlled, IP54, Utilization Categories: AC-12, AC-15, DC-12,
DC-13;.
Product series 2: Electromagnetically operated control switches - Contactor Relays – XXXX (Type designation),
Form Zb, Air-Break type, Electromagnetic Operated, Non-automatic controlled, IP20, Utilization Categories:
AC-12, AC-15, DC-12, DC-13;
Annexure-II
Table B. Electromechanical Control Circuit Devices can be added under the scope of Licence without
additional complete type testing. (vice versa condition is not applicable)
+-------+-------------------------------------------+---------------------------------------------------+
| Case | Equipment Type | Condition |
+=======+===========================================+===================================================+
| A | Equipment not suitable for isolation | If product series is tested for equipment suitable |
| | | for isolation |
+-------+-------------------------------------------+---------------------------------------------------+
| B | Same type of control switch with | If control circuit device is tested with one type |
| | different type of actuator, but same | of actuator, other type of actuators will be |
| | design of contact element | covered subject to declaration of same |
| | | fundamental design by manufacturer; with |
| | | additional tests of "Test Sequence V and/or VI |
| | | of IS/IEC 60947-5-1: 2016; whichever is |
| | | applicable. |
| | | |
| | | Example of actuator type : rotary, push, pull, |
| | | top pressed, side pressed, roller etc. |
+-------+-------------------------------------------+---------------------------------------------------+