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MA 4804 Variable transformer 

Safety and operational considerations   

 

 

2.2  Standards applied 

 
The MA 4804 is manufactured and tested according to the following regulations 
as listed below. 
 
Electromagnetic compatibility (EMC) 

EN 61326-1 

Electrical equipment for measurement, control and laboratory 
use – EMC requirements – Part 1: General requirements 

 
Safety (LVD) 

EN 61010-1 

Safety requirements for electrical equipment for 
measurement, control, and laboratory use – Part 1: General 
requirements 

EN 61558-1 

Safety of power transformers, power supplies, reactors and 
similar products – Part 1: General requirements and tests 

EN 61558-2-1 

Safety of power transformers, power supplies, reactors and 
similar products – Part 2-1: Particular requirements and tests 
for separating transformers and power supplies incorporating 
separating transformers for general applications 

EN 61558-2-14 

Safety of transformers, reactors, power supply units and 
combination thereof – Part 2-14: Particular requirements and 
tests for variable transformers and power supply units 
incorporating variable transformers 

 
 
Note about EN and IEC standards:  
Text of this manual contains references to European standards. All standards 
of EN 6xxxx (e.g. EN 61010) series are equivalent to IEC standards with the 
same number (e.g. IEC 61010) and differ only in amended parts required by 
European harmonization procedure. 
 

Содержание MA 4804

Страница 1: ...Variable Transformer MA 4804 Instruction manual Version 3 0 Code no 20 750 280...

Страница 2: ...metrel si Mark on your equipment certifies that this equipment meets the requirements of the EC European Community regulations concerning safety and electromagnetic compatibility 2011 METREL No part o...

Страница 3: ...ings and notes 2 2 6 Standards applied 3 7 Instrument description 3 1 7 Front panel 3 2 8 Back panel 3 3 8 Instrument set 4 9 Instrument operation 4 1 9 Working with MA 4804 4 2 9 Application of MA 48...

Страница 4: ...nsulating from mains supply In general the MA 4804 offers the following Floating secondary circuit Robust construction Adjustable output AC voltage from 0 V to 245 V Permanent load current is 3 1 A Po...

Страница 5: ...804 is used in a manner not specified in this Instruction manual the protection provided by the equipment might be impaired The MA 4804 is intended for indoor use only Do not use the instrument and ac...

Страница 6: ...neral requirements and tests EN 61558 2 1 Safety of power transformers power supplies reactors and similar products Part 2 1 Particular requirements and tests for separating transformers and power sup...

Страница 7: ...Handel Intended for moving the MA 4804 by hand 2 V meter Indicates output voltage 3 Output socket Prepared for connection of floating load 4 Dial Knob for manual regulation of output voltage 5 I O swi...

Страница 8: ...Instrument description 8 3 2 Back panel Figure 3 2 Back panel Legend 1 Fuse F1 T 4 A 250 V Breaking capacity 150 A 2 Cord entry For power supply entry 3 3 Instrument set Instrument variable transforme...

Страница 9: ...sary 4 2 Application of MA 4804 General application procedure for MA 4804 is as follows Before connection to mains supply keep I O switch in O OFF position switch off automatic fuse and rotate dial kn...

Страница 10: ...with other rated AC power supply voltage Notes PE shall be connected as shown if observed equipment requires TN TT supply voltage condition The PE of observed equipment might be connected to the PE of...

Страница 11: ...pe only otherwise the instrument may be damaged and or operator s safety impaired Position of fuses can be seen in Figure 3 4 in chapter 3 3 Back panel 5 2 Cleaning No special maintenance is required...

Страница 12: ...ristics see graph below Figure 6 1 Loading characteristic of MA 4804 Input overvoltage category 300 V CAT II Protection class I Transformer type separating Pollution degree 2 Protection degree IP30 Di...

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