MR VACUTAP VM Series User Manual

Table of contents
Maschinenfabrik Reinhausen GmbH 20204 4360571/02 ENVACUTAP
®
VM
®
5 Operation........................................................................................................................... 39
5.1 Operating the motor-drive unit with the hand crank.......................................................................... 39
6 Fault elimination ............................................................................................................... 41
6.1 Tripping the protective relay and re-commissioning the transformer................................................ 43
6.1.1 Flap valve in OPERATION position ....................................................................................................................44
6.1.2 Flap valve in OFF position ..................................................................................................................................44
6.1.3 Re-commissioning the transformer .....................................................................................................................44
6.2 Tripping the pressure monitoring device and putting the transformer back into operation............... 45
6.2.1 Sensor in the OPERATION position ...................................................................................................................45
6.2.2 Sensor in the OFF position .................................................................................................................................45
6.2.3 Re-commissioning the transformer .....................................................................................................................46
7 Maintenance...................................................................................................................... 47
7.1 Inspection ......................................................................................................................................... 48
7.2 Maintenance intervals....................................................................................................................... 49
7.3 Changing the insulation fluid............................................................................................................. 51
7.3.1 Moving on-load tap-changer to adjustment position ...........................................................................................51
7.3.2 Removing horizontal drive shaft..........................................................................................................................51
7.3.3 Emptying the oil compartment and oil conservator .............................................................................................53
7.3.4 Filling the oil compartment and oil conservator with fresh insulating fluid...........................................................55
7.3.5 Installing horizontal drive shaft............................................................................................................................58
7.3.6 Centering on-load tap-changer and motor-drive unit ..........................................................................................59
7.4 Performing DC resistance measurement on transformer ................................................................. 59
8 Technical data................................................................................................................... 61
8.1 Technical data for on-load tap-changer ............................................................................................ 61
8.1.1 On-load tap-changer properties ..........................................................................................................................61
8.1.2 Permissible ambient conditions...........................................................................................................................62
8.2 Technical data for protective relay.................................................................................................... 63
8.3 Special models of protective relay .................................................................................................... 65
8.3.1 Protective relay with CO change-over contact as tripping switch .......................................................................65
8.3.2 Protective relay with several dry-reed magnetic switches...................................................................................66
8.4 Technical data for pressure monitoring device ................................................................................. 66
8.5 Limit values for dielectric strength and water content of insulating fluids ......................................... 68
9 Drawings ........................................................................................................................... 69
9.1 10009950.......................................................................................................................................... 70

MR VACUTAP VM Series Specifications

General

Brand	MR
Model	VACUTAP VM Series
Category	Controller
Language	English