Transformer Turns Ratio Meter Prova 1660: 马来西亚的首选 Obsnap Instruments Sdn Bhd

详情

Product Features

Measurements of 1Φand 3ΦTransformer/VT/CT Turns Ratio.
VT/PT ratio 0.8~10000, CT ratio 0.8~2000.
Graphical and Literal Illustration of Measurements and Connections with Large Back-lighted Dot Matrix 240 x 128 LCD. Display Test Data with Nameplate Transformer Values for Easy Interpretation.
Ten Test Frequencies (50~400Hz).
Display Turns Ratio, Deviation, Secondary Output, Excitation Voltage and Current, Phase Angle and Nameplate Transformer/VT/CT Values in one page for easy transformer quality interpretation.
Check for Live Test Points, Short Circuit, Open Circuit, and Reverse Polarity before Each Measurement. Message is displayed to Warn Users (But, checking is not performed once measurement starts).
Store 4096 Files of Transformer Nameplate Values (VT/PT/CT, 1Φ/3Φ, Test Frequency, Primary and Secondary Voltages or Ratio, RCF) and Measuring Data.
9 types of 3Φ Windings Connections pre-installed for easy user selection.
Wireless Blue Tooth Communication with PC.
Select Filter to Remove Field Noise (Slow, Normal, Fast).
Disable or Enable Auto-Power-Off with Programmable Time.
Built-in calendar clock.
Records with Date and Time Stamp.
Powerful Lithium Battery (3400mAH) with built-in Charging Circuit.
User Programmable RCF (Reference Correction Factor, 0.99~1.01) to Correct Accuracy within 1% Error.
Friendly File System for Easy On-site Data Retrieval and Nameplate Values Management.
PC Application Software included.

Specification

Electrical Specifications:
Reference Conditions：23℃± 5℃ (30 to 50% RH) range. Add 25ppm/℃ for 0° to 18℃ and 28° to 50℃ to all accuracy specifications.
No external electrical or magnetic fields. Output current ≦150 mA for VT/PT and ≦50mA for CT. Calibration cycle is 1 year.

Ratio Range (VT/PT)	Autoranging：0.8000 to 10000：1
Accuracy (70Hz)	Ratio Range	Accuracy (% of Reading)
	0.8000 ~ 999.99	± 0.1%
	1000.0 ~ 4999.9	± 0.2%
	5000.0 ~ 10000	± 0.25%
Ratio Range (CT)	Autoranging：0.8000 to 2000.0
Accuracy (70Hz)	Ratio Range	Accuracy (% of Reading)
	0.8000 to 2000.0	± 0.5%
Excitation Signal	VT/PT Mode：34Vrms max CT Mode：Auto Level 0 to1A, 0.1 to 20Vrms
Excitation Current Display	Range：0 to 1000mA Accuracy：± (2% of Reading +2mA)
Excitation Frequency (Hz)	50, 55, 60, 70, 100, 120, 200, 240, 300, 400
Display	5” Large dot matrix LCD display (240*128) with backlight
Power Source	Rechargeable Lithium Battery, 3400mAh
Battery Life	Over 10 hrs of continuous operation. Battery life (%) indication
Battery Charger	Universal input (90 to 264Vrms input)
Charging Time	＜4 hrs
Data Storage	4096 Files Each (VTM, CTM, VTR, CTR, BMP)
Date/ Time	Battery-backed, Real-time Calendar clock
Measurement Method	ANSI / IEEE C57.12.90 and IEC 600076.1
Operation Environment	5℃ ~ 50℃, 85% RH
Storage Environment	-20℃ ~ 60℃, 75% RH

Accessory:
1. Test leads (set of 2)
2. Alligator clips (4pcs.)
3. Rechargeable lithium battery
4. User manual
5. AC adaptor
6. Power cord
7. Software CD & Manual
8. Carrying bag

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