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Power Electronics Test Solution

Digital Power Meter Model 66203/66204

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CE Mark Rohs 2 Compliant
Key Features:
  • Voltage Ranges : 15/30/60/150/300/600 Vrms,1200Vrms (optional kit)
  • Current Ranges : 0.005/0.02/0.05/0.2/0.5/2/5/20 Arms
  • Frequency Range : DC, 15Hz~10kHz
  • Embedded high speed DSP, 16 bits Analog/Digital converters
  • Half rack size, up to 4 input modules
  • Supports various single and 3 phase wiring configurations (see diagram)
  • Supports external shunt and CT for higher current applications
  • 5 mA minimum current range & 0.1mW power resolution
  • Meets ENERGY STAR / EN 50564 / IEC 62301 / ErP / SPEC Power
  • Includes accumulated energy methods for unstable power measurement
  • User-define criteria provides automatic PASS/FAIL indications
  • Dual current shunt design provides high accuracy over a wide current range
  • THD and user-specify order distortion measurement
  • Inrush current and energy measurements
  • Voltage / Current harmonics measurements up to 50 orders
  • Support ultra high precision DCCT 60A/200A optional kit for high current measurement application

Chroma 66203/66204 Power Meters are designed for mul t ipl e pha s e powe r me a surement applications. The wiring mode function allows the user to take accurate power measurements for various wiring modes 1P2W/1P3W/3P3W/3P4W as well as providing accurate standard power measurements common for most electrical devices. A unique feature of the 66203/66204 is its stateof- the-art DSP digitizing technology instead of less accurate and slower traditional analog circuits. The internal 16 bits analog/digital converters with sampling rates of up to 250kHz provide both high speed and high accuracy measurements which is unprecedented within the industry for this class of power meters.

The instruments include a four part display with 7-segment LED front panel readouts. Users can easily select desired parameters and readouts with a touch of a button. The 66203/66204 meters also include remote control using USB or GPIB interfaces via rear panel connections.

The 66203/66204 are packaged in a 3U high, half rack enclosure suitable for bench top or system integration. The power meters are capable of supporting external shunts and CT for higher current application. The 4 channel 66204 is suitable for input and output parameter measurement and efficiency of 3 phase PV inverters can be calculated with measurement of the DC voltage/current at the input side of the inverter.

The 66203/66204 power meters include a 2-shunt design to provide high accurate readings for both low and high current measurements. The power meters also suppor t features such as Inrush current, Total Harmonic Distortion of V/I, and Energy measurements. With these practical functions, the 66203/66204 power meters are suitable for meeting the demanding tasks of R&D, production and quality control departments.


The multi-channel of 66203/66204 Power Meters are capable of supporting different wiring modes. As shown the instruments can be configured for single and 3 phase configurations by selection preset modes.


1P2W (Single Phase Two Wire)1P2W1P2W1P2W1P2W
1P3W (Single Phase Three Wire)1P3W1P2W1P2W
3P3W (Three Phase Three Wire – Two Watt meter Method)3P3W1P2W1P2W
3P4W (Three Phase Four Wire)3P4W1P2W


Chroma Model 66203 1P2W (Single Phase Two Wire)Chroma Model 66203 1P3W (Single Phase Three Wire)
1P2W (Single Phase Two Wire) 1P3W (Single Phase Three Wire)
Chroma Model 66203 3P3W (Three Phase Three Wire)Chroma Model 66203 3P4W (Three Phase Four Wire)
3P3W (Three Phase Three Wire) 3P4W (Three Phase Four Wire) 


Each channel of 66203/66204 has the ability to provide independent measurements; hence the meters are suitable for multi-point measurement applications such as PV inverter testing. Instruments are designed for measuring DC input parameters as well as three phase AC readings on the output side. The overall efficiency for the PV inverter can easily be obtained by built-in functions. In order to meet high voltage applications (up to 1200Vrms) Chroma offers an HV option kit.

User could implement 3P3W (Three Phase Three Wire) wiring mode for three phase power measurement application. Such as Power Supplies.


With the wiring mode set as 1P2W, the 66204 Power Meter has the capability of performing up to 4 simultaneous power measurements as shown. The meters are also designed to comply with power measurement requirements in accordance to many international standards such as Energy Star/EN 50564/IEC 62301/ ErP.


User-defined Criteria for GO/NG Test

The Power Meters allow users to perform GO/NG functions by presetting pass/fail limits. If the measured values are within these limits, the Pass indicator illuminates green. Fail results in red illumination.

66203/66204 Power Meters suppor t external shunt
function for high current (>20A) measurement application.

Compact size design allows two 66203/66204 Power Meters to be
configured side-by-side in a standard 19" rack

Average Mode and Integration Mode for Power Measurement

When using a traditional power meter, unstable measurements can occur if the UUT's power consumption are unstable or operating in non-linear modes (i.e. a power supply's hiccup mode). In these cases the load levels maybe different at different measurement aperture windows (T1, T2, T3 and T4 below). A simple averaging calculation can only provide a visual stable value but provides inaccurate power readings.

The 66203/66204 includes a Window Mode method which calculates all data within the user-defined time window . In this manner users can obtain a real average value without data lose. An accumulated energy approach method (i.e. integration mode) for power measurements is also provided. This integration mode calculates active power values by integrating energy from V and I in a user-defined time period . In this way, users can achieve accurate readings with guaranteed transient-free variations. The 66203/66204 meters provide a 5mA minimum current range with crest factor 4, and 0.1mW measurement resolution for low power application (< 10W), and less than 2% uncertainty even for No-Load mode power measurements. These functions make 66200 an ideal choice for ENERGY STAR / IEC 62301 / ErP / SPEC Power measurement.

THD Measurement and User Define Level of Distortion

The 66203/66204 Power Meters can measure voltage and current Total Harmonic Distortion (THD) directly which can be displayed in percentage format. For some requirements (ENERGY STAR), users need to verify the THD of AC supply voltage when supplying the UUT in the specified mode not to exceed 2%, up to and including the 13th harmonic (as specified in IEC 62301).

The 66203/66204 also provides a function to define a user-specify level of distortion n, (n is from 2 to 50) for measuring harmonic distortion. The calculation formula is listed below. Thus, the instrument can easily measure distortion values as required by the ENERGY STAR requirements.

Inrush Current Measurement

The 66203/66204 Power Meters include built-in inrush current ( Is ) measurement functions. Users can even set a current level for triggering the starting point of the measurement. Users also can use an external TTL signal to trigger inrush current measurements through the control I/O signal port located at the rear side.

The delay parameter can help users to bypass the peak value B after the trigger point A. The parameter, T, allows a set time period to be established for measuring the peak value during a preset time (T). The main purpose is to avoid measuring the inrush current value that is generally caused by X-capacitor of a power supply.


Low Pass Filter

The maximum measurement bandwidth of the 66203/66204 Power Meters is 50kHz. However, the high frequency component is not desirable in all applications. For example, the input switching noise of some power supplies may influence the power measurement. In order to achieve a proper value, a low pass filter is necessary to reject the switching component. Users can set the parameter filter ON in the system configuration setting. The bandwidth will be reduced to 5kHz to reject high frequency content but still meets the 3kHz requirement of ENERGY STAR test.

Support Ultra High Precision DCCT 60A/200A Optional Kit for High Current Measurement Application


The 66200 Power Meters provide graphical user interface software (Softpanels) which allow users to control and read measured parameters from a computer via USB or GPIB interface. Users can easily observe measured voltage and current waveforms and monitor the changes in parameter readings by using the chart function. Additional features include a recording function which can record selected parameters and write data to a file for further analysis. The 66200 Softpanels supports IEC 61000-3-2* harmonic current limit test (pre-compliance) allowing users to examine whether the UUT has met the harmonic current requirement. The Power Efficiency Softpanel* also integrates with Chroma's electronic loads and AC Sources to provide an easy method of power efficiency testing and recording of data using the test report function which automatically generates a report at the completion of testing. (*Only support by 1P2W with designated single channel)


1. Parameter selection key
2. Channel selection key
3. System setting and function indicator
4. System configuration setting
5. Voltage range selection key
6. Current range selection key
7. Power ON/OFF switch
8. Wiring mode selection key

9. GPIB remote interface
10. USB remote interface
11. Control I/O signals
12. Voltage measurement inputs
13. AC input power
14. External shunt input
15. Current measurement inputs

66203 | 66204Digital Power Meter
66203Digital Power Meter (3ch)
66204Digital Power Meter (4ch)
A662008Power Efficiency Test Softpanel
A662009Softpanel for 66200 Series
A662010Rack Mount Kit for 1 unit
A6620121200V HV option kit
A662013External CT 50Arms for Model 66203/66204
A662014External CT 100Arms for Model 66203/66204
A662015Voltage and current measurement cables for Model 66204
A662016Voltage and current measurement cables for Model 66203
A662017Ultra High Precision DCCT 60A
A662018Ultra High Precision DCCT 200A
A662019DCCT Power Adapter for single channel
A662020DCCT Power Adapter for multi- channels
01. 상품요약정보 : 의류
제품소재 상세설명페이지 참고
색상 상세설명페이지 참고
치수 상세설명페이지 참고
제조자 상세설명페이지 참고
세탁방법 및 취급시 주의사항 상세설명페이지 참고
제조연월 상세설명페이지 참고
품질보증기준 상세설명페이지 참고
A/S 책임자와 전화번호 상세설명페이지 참고
08. 거래조건에 관한 정보
재화 등의 배송방법에 관한 정보 상품 상세설명페이지 참고
주문 이후 예상되는 배송기간 상품 상세설명페이지 참고
제품하자가 아닌 소비자의 단순변심, 착오구매에 따른 청약철회 시 소비자가 부담하는 반품비용 등에 관한 정보 배송ㆍ교환ㆍ반품 상세설명페이지 참고
제품하자가 아닌 소비자의 단순변심, 착오구매에 따른 청약철회가 불가능한 경우 그 구체적 사유와 근거 배송ㆍ교환ㆍ반품 상세설명페이지 참고
재화등의 교환ㆍ반품ㆍ보증 조건 및 품질보증 기준 소비자분쟁해결기준(공정거래위원회 고시) 및 관계법령에 따릅니다.
재화등의 A/S 관련 전화번호 상품 상세설명페이지 참고
대금을 환불받기 위한 방법과 환불이 지연될 경우 지연에 따른 배상금을 지급받을 수 있다는 사실 및 배상금 지급의 구체적 조건 및 절차 배송ㆍ교환ㆍ반품 상세설명페이지 참고
소비자피해보상의 처리, 재화등에 대한 불만처리 및 소비자와 사업자 사이의 분쟁처리에 관한 사항 소비자분쟁해결기준(공정거래위원회 고시) 및 관계법령에 따릅니다.
거래에 관한 약관의 내용 또는 확인할 수 있는 방법 상품 상세설명페이지 및 페이지 하단의 이용약관 링크를 통해 확인할 수 있습니다.
09. 반품기한
  • 단순 변심인 경우 : 상품 수령 후 7일 이내 신청
  • 상품 불량/오배송인 경우 : 상품 수령 후 3개월 이내, 혹은 그 사실을 알게 된 이후 30일 이내 반품 신청 가능
010. 반품 배송비
반품 배송비
반품사유 반품 배송비 부담자
단순변심 고객 부담

최초 배송비를 포함해 왕복 배송비가 발생합니다. 또, 도서/산간지역이거나 설치 상품을 반품하는 경우에는 배송비가 추가될 수 있습니다.

상품의 불량 또는 오배송 고객부담 아님
011. 배송상태에 따른 환불안내
진행 상태 결제완료 상품준비중 배송지시/배송중/배송완료
어떤 상태 주문 내역 확인 전 상품 발송 준비 중 상품이 택배사로 이미 발송 됨
환불 즉시환불 구매취소 의사전달 → 발송중지 → 환불 반품회수 → 반품상품 확인 → 환불
012. 취소방법
  • 결제완료 또는 배송상품은 1:1 문의에 취소신청해 주셔야 합니다.
  • 특정 상품의 경우 취소 수수료가 부과될 수 있습니다.
013. 환불시점
결제수단 환불시점 환불방법
신용카드 취소완료 후, 3~5일 내 카드사 승인취소(영업일 기준) 신용카드 승인취소
계좌이체 실시간 계좌이체 또는 무통장입금
취소완료 후, 입력하신 환불계좌로 1~2일 내 환불금액 입금(영업일 기준)
휴대폰 결제 당일 구매내역 취소시 취소 완료 후, 6시간 이내 승인취소
전월 구매내역 취소시 취소 완료 후, 1~2일 내 환불계좌로 입금(영업일 기준)
당일취소 : 휴대폰 결제 승인취소
익월취소 : 계좌입금
포인트 취소 완료 후, 당일 포인트 적립 환불 포인트 적립
014. 취소반품 불가 사유
  • 단순변심으로 인한 반품 시, 배송 완료 후 7일이 지나면 취소/반품 신청이 접수되지 않습니다.
  • 주문/제작 상품의 경우, 상품의 제작이 이미 진행된 경우에는 취소가 불가합니다.
  • 구성품을 분실하였거나 취급 부주의로 인한 파손/고장/오염된 경우에는 취소/반품이 제한됩니다.
  • 제조사의 사정 (신모델 출시 등) 및 부품 가격변동 등에 의해 가격이 변동될 수 있으며, 이로 인한 반품 및 가격보상은 불가합니다.
  • 뷰티 상품 이용 시 트러블(알러지, 붉은 반점, 가려움, 따가움)이 발생하는 경우 진료 확인서 및 소견서 등을 증빙하면 환불이 가능하지만 이 경우, 제반 비용은 고객님께서 부담하셔야 합니다.
  • 각 상품별로 아래와 같은 사유로 취소/반품이 제한 될 수 있습니다.

상품군 취소/반품 불가사유
의류/잡화/수입명품 상품의 택(TAG) 제거/라벨 및 상품 훼손으로 상품의 가치가 현저히 감소된 경우
계절상품/식품/화장품 고객님의 사용, 시간경과, 일부 소비에 의하여 상품의 가치가 현저히 감소한 경우
가전/설치상품 전자제품 특성 상, 정품 스티커가 제거되었거나 설치 또는 사용 이후에 단순변심인 경우, 액정화면이 부착된 상품의 전원을 켠 경우 (상품불량으로 인한 교환/반품은 AS센터의 불량 판정을 받아야 합니다.)
자동차용품 상품을 개봉하여 장착한 이후 단순변심의 경우
CD/DVD/GAME/BOOK등 복제가 가능한 상품의 포장 등을 훼손한 경우
내비게이션, OS시리얼이 적힌 PMP 상품의 시리얼 넘버 유출로 내장된 소프트웨어의 가치가 감소한 경우
노트북, 테스크탑 PC 등 홀로그램 등을 분리, 분실, 훼손하여 상품의 가치가 현저히 감소하여 재판매가 불가할 경우