Instruction and Operating Manual
Overspeed Protector CTO-B45202
2019 / 02
J.M. Voith SE & Co. KG │ Division Digital Ventures
Page: 15 / 25
918 3626018864 en
D – 74564 Crailsheim
Version: 2.1
6
Adjustments and Commissioning
Prior to delivery, the overspeed protector has been tested and adjusted at J.M. Voith SE
& Co. KG │ Division Digital Ventures. The settings are documented in the supplied test
report.
6.1
Adjustment of turbine trip frequency
Any trip frequency adjustment represents a potentially dangerous manipulation of the
equipment and only skilled personnel, authorized by the manufacturer or the supplier, is
allowed to do it. Any maladjustment may cause imminent danger to life and severe
damage to properties. In any case, any adjustment of the turbine trip frequency has to
be documented. Confirmation of the new adjustment by means of a documented trip
test is mandatory before operating the turbine.
For safety reasons, the overspeed protector is set to the minimum trip frequency possible
of approx. 3800 Hz. For the exact value, please see the relevant test report submitted to
you.
The turbine trip frequency is set by means of an 8-fold DIP coding switch which is
protected on the electronics that is integrated in the control mangnet A (VRM) (see Fig. 5).
Fig. 3
Prior to commissioning, please ensure that the pipes and the hydraulic system have
been cleaned. Cleanliness of the operating medium must correspond to the cleanliness
grade stated in Chapter 1. Cleaning and flushing operations essential to the operating
medium must not be performed with the overspeed protector connected. Operation of
the overspeed protector with contaminated operating medium is not permitted and may
damage the overspeed protector.
Содержание 91868550
Страница 26: ......
