日本YOKOGAWA WT2030數字功率計電力測量儀，0.03級，500KHz/600V/30A，RS232接口，直流和四線測量

日本YOKOGAWA WT2030數字功率計特點

• 額定值（範圍）
  電壓：10/15/30/60/100/150/300/600 V
  電流
  　 直接輸入：1/2/5/10/20/30 A
  　 外附分流器輸入：50/100/200 mV
• 頻率範圍：DC，2Hz至500 kHz（但對功率而言,zui高300 kHz）
• 基本精度（45Hz≤頻率f≤66Hz）
  電壓/電流：±（讀數的0.03%＋量程的0.03%）
  功率：±（讀數的0.04%＋量程0.04%）
  功率因數效應（在cosφ＝0時）：加量程的±0.1%
• 外型尺寸：約426（寬）×132（高）×400（深）mm
• 重量：約13公斤（ 3單元型），約10公斤（1單元型）
• 連接方法和對應型號

產(chan) 品代碼 連接方法	253101	253102	253103
單相2線製	可用	可用	可用
單相3線製	1	可用	可用
3相3線製 （2電壓,2電流）	1	1	可用
3相3線製 （3電壓,3電流）	1	1	可用
3相4線製	1	1	可用

日本YOKOGAWA WT2030數字功率計技術指標

Input
Item		VoltageV					CurrentA
Input circuit type		Floatinginput
		Resistive voltage divider					Shuntinput
Rated inputs（range rms）		10/15/30/60/150/300/600V					Directinput 1/2/5/10/20/30A External shunt input: Approx.100 kΩ
Input impedance		Inputresistance Approx. 2 MΩ Input capacitance Approx.15 pF					Directinput: Approx.6 mΩ +approx.0.07 μH External shunt input: Approx:100kΩ
Frequency range		DCand 2 Hz to 500 Hz
Instantaneous maximum allowable input for 1s		Thepeak voltage is 2500V, or the RMS value is 3 times the range, whichever is less.					The peak current is 90A,orthe RMS value is 50A,whichever is less. External input:The peak value is 20times the range or less.
Continuousmaximum allowable input		The peak voltageis 1400V, or the RMS value is 2.5 times the range, whichever is less.					Thepeak current is 60A,or the RMS value is 35A,whichever is less. External input:Thepeak value is 10 times the range or less.
Continuousmaximum common mode voltage		600 Vrms（whenthe protective cover for the output connector is used）CATII 400 Vrms（whenthe protective cover for the output connector is removed）CATII
Common mode rejection ratio at 600V rms between input terminals and case （50/60 Hz input）		Voltage input terminals shorted,current input terminals opened:Better than -80 dB（±0.01% of rdg or less）
		Reference value: 200 KHz max ±（0.18×f）/（Range rating）% of rdg or less（Unit of f:KHz）					Referencevalue: 200 KHz max ±（0.03 ×f）/（Range rating））% of rdg or less（Unit off:KHz）
Input terminals		Bindingposts					Large binding posts External shuntinput:BNC
A/D converter		Simultaneousconversion of voltage and current input Resolution:16 bits Maximum:conversion rate:104 KHz
Overloadinput detection		Alarm lamp lightsat approx.350% of the input range（approx.700% of range when crest factoris 6）
Range switching		Therange can be switched manually,automatically,or by communication control foreach element.
Auto range switching		Range up:When the measuredvalue exceeds 110% of the rated value.or when the peak value exceeds 350%of the peak value. Range down:When the measured value becomes less than30% of the rated value.
Measurement mode Switching		The mode can be setfor each element and also for each voltage and current measurement circuit.
Display Functions
Display: Display contents:		7-segment LED （light emittingdiode） 4 displays
DISPLAY		Displaycontents					Display resolution
A		V,A,W（eachelement）					V,A,W:50000 Wh,Ah:500000 Hz:199999
B		V,A,W（eachelement）
C		V,A,W,VA,var,PF,deg, Vpk（eachelement）
D		V,A,W,Apk,THD,VHz,AHz,Wh ,Ah（eachelement）,η（efficiency）
Unit: Display update rate: Peak hold function: PEAK: ALL: Response time:		m,k,M,V,A,W,VA,var,pk,Hz,h,deg,% Select from 0.25 sec（FAST）,0.5 sec（MID） and 2.0 sec （SLOW）. Selectable tohold item as follows Vpk and Apk can be held at maximum value Measurementvalue of V,A,W,VA,var,Vpk,Apk can be held at maximum value. Maximum of twicethe display update rate（The time taken for the display to fall within is OFF andan abrupt change is made from 0 to 100% of the range, of from 100 to 0% of therange）