IEC 63078 pdf free download
IEC 63078 pdf free download. Installations for electroheating and electromagnetic processing – Test methods for induction through-heating installations.
4.3.101 Boundaries of induction through-heating installation for testing
The energy consumption of an induction through-heating installation shall also include:
a) energy consumption of the power circuit of the induction through-heating equipment for heating and holding billets;
b) energy consumption of the control system of the installation.
The corresponding energy consumption supplied by some public service, for example hydraulic and/or pneumatic pumping station(s) to the installation, may be estimated according to the practical use or ignored when it is very small compared with the whole energy consumption of the installation.
4.4 General requirements for testing
This subclause of IEC 60398:2015 is applicable except for the following replacement and additions.
Replacement (of the first paragraph of this subclause of IEC 60398:2015):
The relevant safety requirements in IEC 60519-1:—, IEC 60519-3:2005 and the manufacturer’s instructions shall be observed and necessary protective measures taken during all tests, to ensure safety.
Additions:
The tests of an induction through-heating installation are divided into cold state tests and hot state tests. Unless otherwise specified, the hot state tests shall be undertaken after the cold state tests are qualified.
The cold state tests shall be undertaken after manufacture or repair as well as during installation and regulation in the cold state. Installation and test preparation shall be carried out according to the manufacturer’s instructions. Before the test, the electrical connections, switches, control system and some dimensions, etc. of the installation shall be inspected.
The hot state tests shall be undertaken with a new lining of specified dimensions and materials as agreed between the manufacturer and the user. The requirements for test billets shall be in accordance with 6.7.101. The technological process for heating and holding shall be agreed between the manufacturer and the user. The technological process also includes the loading, temperature measurement and unloading of billet. Where a test is to be performed in the hot state (see 3.123), the induction through-heating equipment shall have been in operation for at least 8 h (depending on the dimensions of billet or agreed between the manufacturer and the user) prior to the test. In the case where it starts with a new lining, it shall have been in operation for at least 24 h prior to the test.
The electrical data at the input of the supply line to be established by the tests of items b), c) and e) of 8.3 are related to the rated voltage U,, and the rated frequency f,,. Admissible deviations from the rated voltage and frequency shall be agreed between the manufacturer and the user. If during the test these deviations are exceeded, this shall be taken into account in the evaluation.
In the case where a mains transformer is used solely for the induction through-heating equipment, the electrical values at the input of the supply line may be determined from the corresponding values on the secondary side of the transformer taking into account its characteristic.IEC 63078 pdf free download.
