GW Instek GPM-8320/8330是專為測量三相交流電源的數位功率計，適用於多項電子產品測試應用（GPM-8320提供2個模組，GPM-8330提供3個模組）。這些型號具有DC、0.1Hz~100 kHz的測試頻寬，採用16 bit A/D、300 kHz取樣率。還提供了一個5" TFT LCD顯示幕、5位數量測顯示、提供25種不同的功率測量參數和高精度測量能力。

GPM-8320/8330還具有波形顯示功能（電壓/電流/功率）、積分量測功能、各階諧波量測和分析（50/60Hz的量測符合IEC61000-4-7要求）、外部感測器輸入端口和各種通訊介面。這些功能幫助用戶實現清晰、便捷和準確的功率量測，堪稱是同類產品中，功能最齊全、性價比最高的功率計。

GPM-8320/8330提供多種輸入電壓配置接線模式（1P3W/3P3W/3P4W/3V3A）。用戶可以根據具體要求選擇接線模式，量測特定接線方法的參數，甚至計算效率。此外，對於額定輸入電壓為1000V和輸入電流為20A的情況，可支援最小電流檔位至0.5A（解析度可達0.1mA），功率量測解析度為0.1mW，峰值因數為3（對於半範圍，CF可以達到6或6A），電壓/電流/功率測量精度為±0.1%讀值±0.05%範圍。

用戶可以選擇不同的量測模式（AC+DC/ AC/ DC/ V-MEAN），提供多達25個相關的功率測量參數。這些參數包括電壓（Vrms/ Vac/ Vdc/ Vmn/ V+pk / V-pk）、電流（Irms/ Iac/ Idc/ I+pk/ I-pk）、頻率（VHz/ IHz）、功率（P/ P+pk/ P-pk）、峰值因數（CFV/ CFI）、視在功率（VA）、無功功率（VAR）、功率因數（PF）、相位角（DEG）、總諧波失真（THDV/ THDI）、最大電流比（MCR）和MATH計算功能。

因此，無論是在如待機功耗的小電流/小功率量測、或是一般產品的消耗功率量測，均能提供最佳的範圍與精準度的支援。

• 5” TFT LCD
• 電壓/電流測試頻寬 : DC, 0.1Hz~ 100kHz
• 具波形顯示 : V (電壓), I (電流), P (功率)
• 電流/電壓失真波形量測 : CF=3 (全範圍), CF=6 或 6A(半範圍)
• 符合 IEC 61000-4-7 諧波量測 (50/60Hz)
• 接線方式選擇鍵 (1P3W,3P3W,3P4W,3V3A)
• 50 階諧波量測及分析功能
• 積分模式下可自動換檔可透過USB隨身碟儲存螢幕畫面
• 具外部電壓/電流感測器輸入 (EXT1/EXT2)
• 標準介面 : RS-232C, USB device/ host, LAN；選購介面 : GPM-DA12 - GPIB + 數位I/O (需出廠前安裝)

產品規格:                                               
I

Item	Specifications
Input type	Voltage	Floating input through resistive voltage divider
	Current	Floating input through shunt
Measure range	Voltage	15V, 30V, 60V, 150V, 300V, 600V and 1000V
	Current
	Direct input	0.5A, 1A, 2A, 5A, 10A and 20A
	Sensor input	EX1: 2.5 V, 5 V, 10 V EX2: 50 mV, 100 mV, 200 mV, 500 mV, 1 V, 2 V
Input impedance	Voltage		Input resistance: approach 2 MΩ
	Current
	Direct input range 0.5A ~ 20A		Input resistance: approach 5 mΩ
	Sensor input
	Input range 2.5V ~ 10V (EX1)		Input resistance: approach 100 kΩ
	Input range 50mV ~ 2V (EX2)		Input resistance: approach 20 kΩ
Continuous maximum allowable input	Voltage		peak value of 1.5kV or RMS value of 1kV, whichever is less
	Current
	Direct input range 0.5A ~ 20A		peak value of 100A or RMS value of 30A, whichever is less
	Sensor input		peak value less than or equal to 5 times of the rated range
Input bandwidth	DC, 0.1 Hz ~ 100kHz
Continuous maximum Common-mode voltage	600 Vrms, CAT Ⅱ
Line filter	select OFF or ON (cut off frequency of 500 Hz)
Frequency filter	select OFF or ON (cut off frequency of 500 Hz)
A/D converter	Simultaneous conversion voltage and current inputs
	Resolution 16bits
	Maximum conversion rate Approx. 300kHz
Display update interval	When the data update interval is 100 ms the numeric display 10 items display update interval is 200 ms.

 

	When the data update interval is 100 ms or 250ms and the numeric value display is set to Matrix or ALL Items display update interval is 500 ms.
	The waveform display update intervals are approximately 1s.

Voltage and Current Accuracy

Item	Specifications
Requirements	Temperature		23 ± 5℃
	Humidity		30~75% RH
	Input waveform		Sine wave crest factor = 3
	common-mode voltage		0 V
	Number of displayed digits		5 digits
	Frequency filter		Turn on to measure voltage or current of 200 Hz or less
	After 30 minutes after warm-up time has passed
	After measurement range is changed (zero-level compensation)
	Update interval is 250 ms
Accuracy	DC	± (0.1% of reading + 0.2% of range)
	0.1 Hz ≤ f＜45 Hz	± (0.1 % of reading + 0.2 % of range)
	45 Hz ≤ f ≤ 66 Hz	± (0.1 % of reading + 0.05 % of range)
	66 Hz＜f ≤ 1 kHz	± (0.1 % of reading + 0.2 % of range)
	1 kHz＜f ≤ 10 kHz	± (0.07 *f) % of reading + 0.3% of range)
	10 kHz＜f ≤ 100 kHz	± (0.5 % of reading + 0.5 % of range) ± [{0.04x(f-10)}% of reading]
	Values for voltage in excess of 750V for which 30kHz < f < 100kHz are reference only.
Temperature coefficient	Add	±0.03% of reading/°C within the range 5 to 18°C or 28 to 40°C.
When the line filter is turned ON	45 ~ 66 Hz	Add 0.3 % of reading
	< 45 Hz	Add 1 % of reading
Accuracy when the crest factor is set to 6 or 6A	accuracy obtained by doubling the measurement range error for the accuracy when the crest factor is set to 3
Accuracy changes caused by data update interval	When the data update interval is 100 ms, and Auto, add 0.05% of reading to the 0.1 Hz to 1 kHz accuracy.
Influence of temperature changes after zero-level compensation or range change	Add 0.02% of range/°C to the DC voltage accuracy.
	Add the following value to the DC current accuracies.
	0.5 A/1 A/2 A/5 A/10 A/20 A ranges			500 µA/°C
	External current sensor input (/EX1)			1 mV/°C
	External current sensor input (/EX2)			50 µV/°C
Accuracy when the crest factor is set to 6 or 6A	accuracy obtained by doubling the measurement range error for the accuracy when the crest factor is set to 3
Accuracy changes caused by data update interval	When the data update interval is 100 ms, and Auto, add 0.05% of reading to the 0.1 Hz to 1 kHz accuracy.

Active Power Accuracy

Item	Specifications
Requirements	same as the conditions for voltage and current.
	Power factor	1
Accuracy	DC	(0.1 % of reading + 0.2 % of range)
	0.1Hz ≤ f＜45 Hz	± (0.3 % of reading + 0.2 % of range)
	45 Hz ≤ f ≤ 66 Hz	± (0.1 % of reading + 0.05 % of range)
	66 Hz＜f ≤ 1kHz	± (0.2 % of reading + 0.2 % of range)
	1 kHz＜f ≤ 10 kHz	± (0.1 % of reading + 0.3 % of range) ± [{0.067x(f-1)}% of reading]
	10 kHz＜f ≤ 100 kHz	± (0.5 % of reading + 0.5 % of range) ± [{0.09x(f-10)}% of reading]
Influence of power factor	when power factor (λ) = 0 (S: apparent power)
	± 0.1 % of S for 45 Hz ≤ f ≤ 66 Hz
	± {(0.1 + 0.15 × f) % of S } for up to 100 kHz as reference data
	•f is frequency of input signal in kHz

 

	when 0 < λ < 1 (Φ: phase angle of the Voltage and current)
	(power reading ) × [(power reading error%) + (power range %) × (power range / indicated apparent power value) + {tanΦ × (influence when λ=o)%}]
When the line filter is turned ON	45 ~ 66 Hz	Add 0.3 % of reading
	< 45 Hz	Add 1 % of reading
Temperature coefficient	same as the temperature coefficient for voltage and current
Accuracy when the crest factor is set to 6 or 6A	accuracy obtained by doubling the measurement range error for the accuracy when the crest factor is set to 3
Accuracy of apparent power S	voltage accuracy + current accuracy
Accuracy of reactive power Q	accuracy of apparent power + (√1.0004 - λ2) - (√1 - λ2) ×100 %
Accuracy of power factor λ	± [(λ-λ/1.0002)+丨 cosø-cos{ø+sin-1 (influence from the power factor when λ = 0%/100)}丨] ±1 digit when voltage and current are at the measurement range rated input
Accuracy of phase difference Φ	± [丨ø-cos-1(λ/1.0002)丨+ sin-1 (influence from the power factor when λ = 0 % / 100)] ± 1 digit when voltage and current are at the measurement range rated input
Accuracy when the crest factor is set to 6 or 6A	accuracy obtained by doubling the measurement range error for the accuracy when the crest factor is set to 3
Accuracy changes caused by data update interval	When the data update interval is 100 ms, and Auto, add 0.05% of reading to the 0.1 Hz to 1 kHz accuracy.

Voltage, Current and Active Power Measurements

Item	Specifications
Measurement method	Digital sampling method
Crest factor	3 or 6 (6A)
Wiring system	Single-phase, two-wire (1 P2 W)
Range select	Select manual or auto ranging
Auto range	Auto-range increase
	The range is upped when any of the following conditions is met.
	Crest factor 3	Vrms or Irms exceeds 130% of the currently set measurement range. Vpk, Ipk value of the input signal exceeds 300% of the currently set measurement range.
	Crest factor 6	Vrms or Irms exceeds 130% of the currently set measurement range. Vpk, Ipk value of the input signal exceeds 600% of the currently set measurement range.
	Crest factor 6A	Vrms or Irms exceeds 260% of the currently set measurement range. Vpk, Ipk value of the input signal exceeds 600% of the currently set measurement range.
	Auto-range decline
	The range is downed when all of the following conditions are met.
	Crest factor 3		Vrms or Irms is less than or equal to 30% of the measurement range. Vrms or Irms is less than or equal to 125% of the next lower measurement range. Vpk, Ipk value of the input signal exceeds 300% of the currently set measurement range.
	Crest factor 6 or 6A		Vrms or Irms is less than or equal to 30% of the measurement range. Vrms or Irms is less than or equal to 125% of the next lower measurement range. Vpk, Ipk value of the input signal exceeds 600% of the currently set measurement range.
Display mode Switching	Vrms (the true RMS value of voltage and current)
	VOLTAGE MEAN (the rectified mean value calibrated to the RMS value of the voltage and the true RMS value of the current)
	AC
	DC

 

Measurement synchronization source	Select voltage, current, or off
	In the case of Auto Update Rate, select the voltage or current from the equipped element.
Line filter	Select OFF or ON (cutoff frequency at 500 Hz).
Peak measurement	Measures the peak (max, min) value of voltage, current or power from the instantaneous voltage, instantaneous current or instantaneous power that is sampled.
Zero-level compensation	Removes the internal offset of the measure unit (After measurement range is changed)
Measurement parameters	Voltage	Vrms , Vmn, Vdc , Vac
	Current	Irms , Idc , Iac
	Active Power	P
	Apparent Power	VA
	Reactive power	VAR
	Power Factor	PF
	Crest Factor	CFI, CFV
	Phase Angle	DEG
	Frequency	IHz and VHz
	Voltage Peak	V+pk and V-pk
	Current Peak	I+pk and I-pk
	Active Power Peak	P+pk and P-pk
	Total Harmonic Distortion	THDI and THDV
	Mathematical Computation	MATH
	Maximum Current Ratio	MCR

Frequency Measurement

Item	Specifications
Measurement item	Voltage and current
Measurement frequency range	Data update interval	Measurement Frequency Range
	0.1 s	20 Hz ≤ f ≤ 100 kHz
	0.25 s	10 Hz ≤ f ≤ 100 kHz
	0.5 s	5 Hz ≤ f ≤ 100 kHz
	1 s	2.0 Hz ≤ f ≤ 100 kHz
	2 s	1.0 Hz ≤ f ≤ 100 kHz
	5 s	0.5 Hz ≤ f ≤ 100 kHz
	10 s	0.2 Hz ≤ f ≤ 100 kHz
	20 s	0.1 Hz ≤ f ≤ 100 kHz
	Auto ( * )	0.1 Hz ≤ f ≤ 100 kHz
	( * ) Limit of the measurement lower limit frequency by the Timeout setting
	Timeout	lower limit frequency
	1 s	2.0 Hz
	5 s	0.5 Hz
	10 s	0.2 Hz
	20 s	0.1 Hz
Measurement range	Auto switching among six types: 100mHz, 1 Hz, 10 Hz, 100 Hz, 1 kHz, 10 kHz, and 100 kHz.
Frequency filter	Select OFF or ON (cut off frequency of 500 Hz)
Accuracy	Requirements	When the input signal level is 30% or more of the measurement range If the crest factor is set to 3. (60% or more if the crest factor is set to 6 or 6A) Frequency filter is ON when measuring voltage or current of 200 Hz or less.
	± (0.06% of reading)

Integration

Item	Specifications
Mode	Select manual integration mode, standard integration mode, or repetitive integration mode.
Timer	Automatically stop integration by setting a timer.
	Selectable range: 0 hours 00 minutes 00 seconds to 9999 hours 59 minutes 59 seconds
Accuracy	±(Power accuracy (or current accuracy) + 0.1% of reading) (fixed range)

 

Range setting	Auto range or fixed range is available for Integration
Timer accuracy	±0.02%
Remote control	Start, stop and reset operations are available using an external remote signal. (option)

Harmonic Measurement

Item	Specifications
Measured item	Voltage, Current, Power
Measured method	Zero-cross simultaneous calculation method
Frequency range	10 Hz to 1.2 kHz.
FFT data length	4096
	(Auto switch when both 50Hz/60Hz and update rate must be greater than or equal to 0.5s)
Sample rate, window width, and upper limit of Analysis orders*	Fundamental Frequency	Sample rate	Window Width	upper limit of Analysis orders
	45 Hz to 55 Hz	f × 512	10	50
	54 Hz to 66 Hz	f x 512	12	50
FFT data length	1024
Sample rate, window width, and upper limit of Analysis orders*	Fundamental Frequency	Sample rate	Window Width	upper limit of Analysis orders
	10 Hz to 67 Hz	f × 1024	1	50
	67 Hz to 150 Hz	f × 512	2	32
	150 Hz to 300 Hz	f × 256	4	16
	300 Hz to 600 Hz	f × 128	8	8
	600 Hz to 1200 Hz	f × 64	16	4
Accuracy	Frequency	Voltage	Current	Power
	10 Hz ≤ f < 45 Hz	0.15% of reading	0.15% of reading	0.35% of reading
		+ 0.35% of range	+ 0.35% of range	+ 0.50% of range
	45 Hz ≤ f < 440 Hz	0.15% of reading	0.15% of reading	0.25% of reading
		+ 0.35% of range	+ 0.35% of range	+ 0.50% of range
	440 Hz ≤ f < 1.2kHz	0.20% of reading	0.20% of reading	0.40% of reading
		+ 0.35% of range	+ 0.35% of range	+ 0.50% of range
50Hz/60Hz Compliant IEC61000-4-7 (update rate must be > 0.5s) Harmonic calculation: FFT method in which FFT data length is divided into 2 types: 1024 and 4096. FFT data length automatically switches in accord with the Frequency and Update Rate of measured signal.

D/A Output (Options)

Item	Specifications
Output voltage	±5 V FS (approach ±7.5 V maximum) against each rated value.
Number of output channels	12
Output items	Set for each channel : V, I, P, VA, VAR, PF, DEG, VHZ, IHZ, Vpk, Ipk, WP, WP±, q, q±, Off
Accuracy	±(accuracy of each measurement item + 0.2% of FS)(FS = 5 V)
D/A conversion resolution	16 bits
Minimum load	100 kΩ
Update Interval	Same as the data update interval.
	In the case of Auto Update Rate, update interval is equal to signal interval. More than 100ms.
Temperature coefficient	±0.05%/°C of FS

Remote Control Input/Output Signal (Options)

Item	Specifications
Remote control input signal	EXT HOLD, EXT TRIG, EXT START, EXT STOP, EXT RESET
Remote control output signal	INTEG BUSY
I/O level	TTL
I/O logic format	Negative logic, Falling edge

Digital IO Signal (Options)

Item	Specifications
I/O control output signal	OUT1, OUT2, OUT3, OUT4
I/O level	TTL
I/O sink current	Max 100mA (per/ch)

• Q (VAR), S (VA), λ (PF) and Φ (DEG) are originated from the measured values including voltage, current and active power which go through computation process. In respect to distorted signal input, accordingly, the value acquired from other instruments, which employ different methods, may differ from that acquired from GPM-8310 unit.
• “Zero” will be shown for S or Q and “--“ will be displayed for λ and Φ when either current or voltage is less than 0.5% of the rated range (less than or equivalent to 1% when crest factor is set 6).

General

Display	5” TFT LCD
Interfaces	RS-232C, USB host/device, LAN
Power Source	AC 100-240V, 50-60Hz
Power Consumption	35VA max.
Dimensions & Weight	220(W) x 132(H) x 402.5(D) mm (w/t bumpers), Approx. 3.85kg

標準配件

• Safety Instruction Sheet x 1, Power cord x 1
• Test lead GTL-209 x 2, Test lead GTL-212A x 2 ~ GPM-8320
• Test lead GTL-209 x 3, Test lead GTL-212A x 3 ~ GPM-8330
• CD x 1 (including complete user manual and USB driver)
• DA12 cable GTL-214 (available for GPM-8320/8330 with GPM-DA12 only)

選購配件