# 1f30HH

Alternative Standbydefinition and Measurementprocedure based on IEC 

## 59/297/CD 1.14 "Standbymode" means the lowest power consumption mode which cannot be switched off or influenced by the user,'anon-operational mode not affected by the dishwasher'sprimary function which maypersistfor an indefinite time when the dishwasheris connected to the main electricity supply and used in accordance with the manufacturer's instructions. 

## 3.5Standbypowermeter. The WattlWatt-hour metershallhave aresolution of 0.1 Watt or betterandshallaccumulate Watt-hours ataminimumpowerlevel of 20milliWatts. The meter shall have amaximum errorno greaterthan 

## 1 % 

## ofthe measured value. 

## The WattlWatt-hour meter mustbe capable of operatingwithin the statedtolerancesfor inputvoltages atup tofivepercent total harmonic distortion aridshall be capable of operatingat frequenciesfrom 47

## hertz through 63 hertz. Powermeasurements shallhave a crest factor of notless than 5

## atRMScurrents of two amps or less. 4.4 Standbypower. Connectthe dishwasher to awatt/watt-hourmeteras specifiedin section 3.5. Select the conditions necessary to achieve operation in the standby mode as definedin section 1.14

## of thisAppendix. Monitor thepower consumption, butallow the dishwasher to stabilizefor atleast5 

## minutes. Then monitorthe power consumption for at least an additional 5minutes. If the powerlevel does not driftby more than 1 % 

## (fromthe maximum value observed) during the later

## 5minutes and there is no cyclic orpulsing behaviorofthe load, the load canbe considered stable and the standbypower can be recorded directly from the instrument at the end ofthe 5 minutes. Otherwise, ifpowervaries over acycle, the energy must be accumulated over aperiod ofone ormore complete cycles in order to get arepresentative average value, but not less than 5 minutes. Determinethe average powerby dividingthe accumulated energybythe time for the monitoringperiod.

Note: 

## Text in Italics is unchangedfrom languagepresentedin the NOPR. Text not in'italics is new language to accompanythe newproposed definition ofstandby. mode.

Thefollowing is the

## lEeDraftDefinition of"Standbymode":

2 Definitions Forthe purpose ofthis Standard the following definitions apply. Terms defined in lEe 60050 International Electrotechnical Vocabulary also apply. 

### 2.1 Standby mode the**lo~est** power consumption mode which cannot be switched off (influenced) by the user and that may persist for an indefinite time when an appliance is connected to the main electriCity supply and used in accordance with the manufacturer's instructions.

Note: The standby mode is usually a non-operational mode when compared 10 the intended use of the appliance's primary function. The standby power is measured in Watts.4.,). I VIlitH t:# Lilt;!**~t:#lt:#\'Lt:rU** IIIUUlI' I::> ::>LaUllI' This methodology may only be used where the mode and measured power are stable. A variation of less than 1

### % in the measured power over 3 minutes is considered stable for the purposes of this standard. Active power readings may be used in this case. Connect the appliance (equipment) to the metering equipment. Select the mode to be measured. Monitor the power consumption but allow the appliance (equipment) to stabilize for not less than 5 minutes. Where the power meter reading is stable and where there is no cyclic or pulsing behaviour of the load, the active power reading for the load may be recorded directly from the instrument. If this reading is confirmed as stable after a further 5 minutes of operation, this can be recorded as the measured power for the relevant mode. 4.3.2 

### All other measurements This methodology shall be used where either the mode or measured power is not stable. However, it may also be used for all stable modes and is the recommended approach if there is any doubt regarding the behavior of the appliance or stability of the mode. Average power readings or accumulated energy over a user selected period are used in this case. Connect the appliance (equipment) to the metering equipment. Select the mode to be measured (this may require a sequence of operations and it may be necessary to waitfor the equipment to automatically enter the desired mode) and monitor the active power. Average power is determined using either the average poweror accumulated energyapproaches outlined below. Average power approach: where the instrument can record a true average active power over a user selected period, the period selected shall not be less than 3 minutes (except if there is an operating cycle

- see below). Accumulated energy approach: where the instrument can accumulate energy over a user selected period, the period selected shall not be less than 3 minutes (except if there is an operating cycle

- see below). The integrating period shall be such that the total recorded value for energy and time is more than 200 times the resolution of the meter for energy and time. Determine the average power by dividing the accumulated energy by the time for the monitoring period.

Note 1 • To ensure consistent units, it is recommended that Wh and hours be used above, to give Watts. Note 2: Example 1 • if an instrument has a time resolution of say 1 second, then a .minimum of 200 seconds (3.33 minutes) is required for integration on such an instrument. Example 2 - if an instrument has an energy resolution of say 0.1 mWh, then a minimum of 20 Wh is required for an integration on such an instrument (at a load of 0.1 W, this would take about 12 minutes, at 1 Watt, this would take 1.2 minutes). Note that both the time and energy resolution requirements have to be satisfied by the reading. If the power varies over a cycle (Le. a regular sequence of power states that occur over several minutes or hours), the period selected to average power or accumulate energy shall be one or more complete cycles in order to get a representative average value.

Instruments for Power Measurements Generally. a digitial power analyser with a fundamental**pow~r accur~cy**  o! 

### O.S:Yo or better wil.1 comfortably meet the instrument specification and measurement uncertamty reqUired In thiS standard. It IS not**usu~lIy** possible to meet these requirements (either the required accuracy or the measurement method) uSing traditional rotating disk kWh meters. The following broad recommendations are made regarding power measurement instruments: • Power resolution of 1 mW or better; • An available current crest factor of 3 (or more) at its rated range value; • Minimum current range of 10mA (or less); It is also desirable for measurement instruments to be able to average active power accurately over any user selected time interval (this is usually done with an internal math's calculation dividing accu.mulated energy by time within the meter, which is the**mos~** accur.ate approach). As an alternative, .the measurement instrument would have to be capable of integrating energy over any user selected time interval with an energy resolution of less than or equal to 0.1 mWh and integrating time displayed with a resolution of 1 second or less.