多头电磁炉EMC测试

yuanlinrong

广东安规检测
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请教一下各位：多头电磁炉出口欧洲，EMC测试是单独一个炉头一个炉头地测试还是全部一齐打开测试？有没有依据标准？

jiayou

如果多炉头可以同时工作，当然会优先考虑同时工作的干扰是否是所有干扰中最大的，他们会根据电磁炉的电路原理来判断。

vincent_feng

CISPR 11中，7.6.7有规定测试方法
7.6.7 Single and multiple-zone induction cooking appliances
Each cooking zone is operated with an enamelled steel vessel filled with tap water up to 80 %
# I7 j  F2 c$ K) Wof its maximum capacity.
: i  ?  C/ m7 F" A! J  |- q3 @The position of the vessel shall match the hob marking on the plate.
Cooking zones shall be operated separately in sequence.
. L- g& U: F/ z" r# L, U$ _9 ^4 W: dA cooking zone with more than one induction coil shall be measured with two load conditions.
The first measurement shall be performed with the smallest coil of the zone activated. The
4 T% B" i. P6 f8 n9 V6 wsecond measurement shall be performed with all coils of the zone activated. In each case, the
# j( E" a5 Q9 H5 S0 hsmallest usable standard vessel shall be used (or the smallest vessel according to the
. @, e7 r: \, E+ @/ K- Omanufacturer’s instructions, which take precedence), which just activates the smallest coil, or
all coils of the zone, respectively.
Energy controller settings shall be selected to give the maximum input power.
The vessel bottom shall be concave and shall not deviate from flatness by more than 0,6 % of
4 Y/ K+ ^4 j  ?9 Wits diameter at the ambient temperature 20 °C ±5 °C.
The smallest usable standard vessel shall be placed in the centre of each cooking zone. For
the dimension of the vessels, the manufacturer’s instructions take precedence.
Cooking zones which are not intended for use with even vessels (e.g. wok-zones) shall be
measured with the vessel provided together with the hob, or with the vessel recommended by
. j+ v. D0 O7 Z" Q) P* [the manufacturer.
Standard cooking vessels (dimension of the contact surface) are:
110 mm
. c/ d8 F, D) O0 {; D145 mm
; h7 J3 c/ [0 o2 z# o+ L& e180 mm
210 mm
300 mm
& V3 ?3 Y/ X3 Z1 QMaterial of the vessel: the induction cooking method has been developed for ferromagnetic
: r& A7 v. Y7 k& Jutensils. For this reason, measurements shall be made with enamelled steel vessels.
NOTE Some vessels on the market are manufactured from alloys with a ferromagnetic portion. However, these
utensils might influence the sensing circuit for vessel displacement.
* Z. ~8 e3 a5 Y) v' ]7 v8 _7.6.8 Electric welding equipment
- O# S( k% v" S3 oFor arc welding equipment, the welding operation during the test is simulated by loading the
( y, f4 y& r! ^$ L( ?- Dequipment with a conventional load. Arc striking and stabilising devices shall be switched off
9 o! R- [/ j% O) f: w. O7 V2 _during the emission measurements. The load conditions and the test configuration for arc
" D$ B' r3 N  u$ O% f- B' Lwelding equipment are specified in IEC 60974-10.
For resistance welding equipment, the welding operation during the test is simulated by shortcircuiting
9 i- ], s: J6 [7 F- Vthe welding circuit. The load conditions and the test configuration for resistance
( N0 k0 i% A, X8 O9 I( w  n3 fwelding equipment are specified in IEC 62135-2.

lsysz

引用第2楼vincent_feng于2011-11-04 11:34发表的  :
CISPR 11中，7.6.7有规定测试方法
7.6.7 Single and multiple-zone induction cooking appliances
Each cooking zone is operated with an enamelled steel vessel filled with tap water up to 80 %
of its maximum capacity.
The position of the vessel shall match the hob marking on the plate.
' H3 ^1 G; Z' M9 j.......

欧洲标准应该是EN55014-1吧。
7.3.4.1 Hob elements of hobs and heating elements of hotplates, controlled by thermostats or by energy regulators are operated with a duty cycle(50+/-10% of the control device. An aluminium pan filled with water is placed on the element. The click rate N is half of the number of switching operations per minute. If a hob or hotplate contains more than one element, the click rate shall be measured and evaluated for each individual element in turn.

vincent_feng

引用第3楼lsysz于2011-11-04 12:28发表的  :


9 p3 x* Z/ ~: Z+ t欧洲标准应该是EN55014-1吧。
7.3.4.1 Hob elements of hobs and heating elements of hotplates, controlled by thermostats or by energy regulators are operated with a duty cycle(50+/-10% of the control device. An aluminium pan filled with water is placed on the element. The click rate N is half of the number of switching operations per minute. If a hob or hotplate contains more than one element, the click rate shall be measured and evaluated for each individual element in turn.

电磁炉的标准应该是11，而不是14吧？

小YU

顶冯公子，V5碉堡了