Elec­tro­mag­netic com­pat­i­bil­ity test­ing in EMC lab EN 61000−3−2

EN 61000-3-2:2014 Elec­tro­mag­netic com­pat­i­bil­ity (EMC) — Part 3 – 2: Lim­its — Lim­its for har­monic cur­rent emis­sions (equip­ment input cur­rent ≤16 A per phase)

Equiv­a­lent to:
IEC 61000 – 3-2:2014

Ref­er­ence of super­seded stan­dard:
EN 61000 – 3-2:2006 +A1:2006 +A2:2009 (Date expired (01÷07÷2012))

The new (or amended) stan­dard has the same scope as the super­seded stan­dard. On the date stated, the super­seded stan­dard ceases to give pre­sump­tion of con­for­mity with the essen­tial or other require­ments of the rel­e­vant Union legislation.

Scope
Inter­na­tional stan­dard EN 61000-3-2:2014 is applic­a­ble for elec­tri­cal equip­ment that is sup­plied from mains net­work with volt­age not less than 220V and cur­rent up to 16A (includ­ing) to limit the har­monic com­po­nent emis­sion.

From the scope of this stan­dard the fol­low­ing equip­ment are excluded:

• Equip­ment with rated power less than 75W, except class C equipment
• Pro­fes­sional equip­ment with power >1kW
• Sym­met­ri­cally con­trolled heat­ing ele­ments with power ≤200W
• Inde­pen­dent dim­mers for incan­des­cent lumi­nar­ies with power ≤1kW

Clas­si­fi­ca­tion
Inter­na­tional stan­dard EN 61000-3-2:2014 have clas­si­fi­ca­tion of equip­ment it cov­ers:

Class A:
• Three phase equip­ment
• House­hold appli­ances, except class D equip­ment
• Sta­tion­ary, fixed tools
• Dim­ming equip­ment intended to be com­bined with incan­des­cent lamps
• Audio equip­ment
• Other equip­ment that is not clas­si­fied as class B, class C or class D

Class B:
• portable tools
• non-​professional arc weld­ing equip­ment

Class C:
• light­ing equip­ment

Class D:
Fol­low­ing type equip­ment with power less than 600W (includ­ing):
• Per­sonal com­put­ers and sim­i­lar
• Tele­vi­sion receivers
• Refrig­er­a­tors and freez­ers that are equipped with vari­able speed drives

Exam­ples
Class A– fre­quency con­vert­ers, cook­ing appli­ances, fixed wood­work­ing equip­ment, light­ing dim­mers, audio ampli­fiers, sub­woofers, heaters with reg­u­la­tion.
Class B– drills, elec­tri­cal ham­mers, portable min­ing equip­ment, non-​professional arc weld­ing equip­ment.
Class C– LED light­ing, LED street light­ing and other light­ing equip­ment.
Class D– Per­sonal com­put­ers, tablets, lap­tops, TV, refrig­er­a­tors.

Requirements
Con­ducted emis­sion require­ments cov­ered by this stan­dard are up to 40^th har­monic.

Limit lines

All limit val­ues expressed with pre­ci­sion 0.01

λ — power fac­tor of the cir­cuit.

For­bid­den con­trol meth­ods
Stan­dard EN 61000 – 3-2:2014 defines con­trol meth­ods that are not allowed to be used in devices that are directly con­nected to the mains net­work:
• Asym­met­ri­cal con­trols accord­ing to IEC 600050 – 161, 161−07−12
• Half wave rec­ti­fi­ca­tion

Excep­tions:
• Only prac­ti­cal solu­tion per­mit­ting the detec­tion of unsafe con­di­tions
• Active input power <100W
• Portable equip­ment con­nected to mains net­work using two-​core flex­i­ble cord and is used for short peri­ods (< few min­utes)

If one of the excep­tions is ful­filled, half wave rec­ti­fi­ca­tion can be used for any device. If one of the excep­tions is ful­filled, asym­met­ri­cal con­trols accord­ing to IEC 600050 – 161, 161−07−12 can be used for motor con­trol only.

Sym­met­ri­cal con­trol meth­ods are allowed to use for heat­ing ele­ments sup­ply, if active heat­ing ele­ment power <200W or D class lim­its are ful­filled.

Sym­met­ri­cal con­trol meth­ods are allowed for pro­fes­sional equip­ment if:
• Active heat­ing ele­ment power <200W
• D class lim­its are ful­filled
• Tem­per­a­ture of heater should be reg­u­lated with time con­stant less than 2s
• No other tech­nolo­gies available