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Live Tank Circuit BreakersRoutine testing
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Routine testsLive tank circuit breakers
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All circuit breakers are tested
ABB has a we ll established process to ensure on-t ime delivery
of circuit breakers to its customers with the highest level of
quality and reliability. At the live tank circuit breaker produc-
tion facility in Ludvika, over 3000 circuit breakers are manu-
factured and routine tested annually.
The routine tests are performed for the purpose of ensur-
ing the quality and guaranteed performance of the material,
design and assembly of the circuit breaker and are made
on each apparatus manufactured. We welcome customer
witnessing of these tests. The routine tests are part of theprocess of producing the circuit breakers and are always per-
formed with the same test procedures, irrespective whether or
not the tests are witnessed by the client’s representative.
Performance of routine tests
The main steps of the order process related to routine test ing
are described in the example timeline shown below. The exact
timing of these steps may vary depending on the size and
complexity of the order.
An invi tat ion to witness routine testing is part of the order
acknowledgement, when planned dates for routine testing
and shipping are given. Confirmation is sent to the customer
normally six weeks before the planned routine test dates.
When the final dates have been advised, participation of anyinspector(s) shall be confirmed by the customer at least three
weeks before the planned dates for routine tests.
Any requests for spec ial or additional test procedures shall
always be advised well in advance, preferably with order
placement, but at the latest with the confirmation of witness-
ing participation.
It must be noted that any requested changes to the test
process or the planned date for routine testing will affect the
delivery time.
After each routine test , a test review meet ing is held together
with the client's witness in order to summarize the tests,
documentations and for resolving any questions which may
have arisen during tests.
For each circuit breaker a complete routine test report,
approved and certified by an ABB test supervisor, is issued
and distributed to the customer as part of the order
documentation.
Week Act iv it ies
1 Order rece ived from customer
2 Order acknowledgement sent by ABB with preliminary date for routine testing
Order design work complete. Drawings sent for customer approval. After customer design approval, materials
purchased for circuit breaker
X-7 ABB confi rms date for routine tests and requests confirmation of customer intent ion to witness testi ng
X-4 Customer confirms intention to witness or not
X-2 Circu it breaker assembly work
X-1 Routine testing done
X Circu it breaker packed and shipped ex-works
Delivery time = "X" weeks, ex-works
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Production process
4 | ABB Live tank circuit breaker routine testing
Goods receiving
Materials and components for circuit breaker assembly are
inspected on arrival and before use for compliance to ABB
requirements. Many items are also routine tested in advanceby the suppliers in accordance with ABB instructions, the
documentation for which can be shown on request.
Breaker pole, Mechanical and Electrical assembling
Tests are also conducted on major modules of the circuit
breaker during the factory assembly process, prior to the
final routine testing of the complete circuit breaker poles and
operating mechanism(s).
Any non-compliant components are c lear ly marked and
isolated from production for further analysis.
Routine test
The fina l routine test process is described further on pages 6
and 7.
Packing
After completion of routine testing the circuit breaker is disas-
sembled into its shipping modules for packing.
Delivery to customer
After packing the circuit breaker is sh ipped to the customer
according to agreed order requirements.
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Goods recieving
Operating
mechanism
Mechanism assembly
Operating
mechanism
Electrical assembly
Breaker pole
assembly
Routine test PackingDelivery to
customer
Manufacturing
Interrupters
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Routine test process
6 | ABB Live tank circuit breaker routine testing
Summary of routine tests IEC ANSI/IEEE ABB
Nameplate and design check X X X
Resistance measurement
(Components in auxiliary and control circuits)
X X X
Function check of auxiliary and control circuits X X X
Mechanical operating test X X X
Resistance measurement (Main circuit) X X X
Dielectric test (Auxiliary and control circuits) N/A X X
Dielectric test (Main circuit) X X X
Tightness test X X X
Delivery time = "X" weeks, ex-works
Meeting the standards
Routine testing of ABB circuit breakers is a tightly controlled
part of our quality production process. All testing follows the
protocols strictly, and is highly automated to ensure accuracy
of the applied test levels and result measurements, in
accordance with international standards.
The main routine test steps with respect to IEC, ANSI and ABB
standards are summarized in the table on this page. A more
detailed description of these steps can be provided on request.
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Minutes Activities completed
0 Start of routine test
10 Nameplate and design check
40 Function check of auxil iary and control circuits
60 Operating mechanism adjustment tests90 Mechanical operating test
100 Motor and closing spring charging tests
115 Resistance measurement (Main circuit )
125 Dielectric test (Auxil iary and control circuits)
155 Overpressure test, t ightness test
175 Die lectric test (Main ci rcui t)
180 Transfer to packing department
The entire process is normally completed within approximately 3 hours per three pole operated breaker.
The routine test report i s automatically generated from the computerized test sys tem and can be reviewed in full by the customer witness shortly after test completion.
Workflow To ensure t imely production f low and maintain on-time deliv-
ery commitments for all customers, the routine test process
is planned to follow a strict time schedule. The timing of the
routine test process for a three-pole operated breaker (or one
phase of a single pole operated breaker) is summarized in the
timeline on this page.
The entire routine test for each circuit breaker is documented
in a detailed routine test report, generated by the computer-
ized testing system. After verification by the ABB certified test
supervisor, this report is provided to the customer as part of
the order documentation.
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P u b l i c a t i o n L i v e t a n k c i r c u i t b r e a k e r r o u t i n e t e s t i n g 1 H S M
9 5 4 3 2 1 - 0 3 e n ,
E d i t i o n 3 ,
2 0
1 3 - 1 0 ,
H i g h V o l t a g e P r o d u c t s ,
P h o t o : H a s s e E r i k s s o n .
ABB AB
High Voltage Products
SE-771 80 Ludvika, Sweden
Phone: +46(0)240-78 20 00
Fax: +46(0)240-78 36 50
www.abb.com/highvoltage
©Copyright 2013 ABB
All r ights reserved
NOTE! ABB AB is working continuously
to improve the products. We therefore re-
serve the right to change designs, dimen-
sions and data without prior notice.
Contact us
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