美國vanguard變壓器有載調壓開關測試儀LTCA-10 Load Tap Changer Analyzer 
The LTCA-10 Analyzer is a second generation load tap changer analyzer. The LTCA-10 accurately measures winding resistance of highly inductive power transformers. Triple resistance-reading channels allow the measurement of three winding resistances simultaneously. Four-wire (Kelvin) connections provide high accuracy and require no lead compensation. A special feature of this device is its ability to measure and graph the resistance trace of a transformer LTC during operation. Using a 60Vdc power supply, the LTCA-10 is capable of outputting 10 amperes.
 Auto discharge circuit for operator safety 
3 resistance reading channels including one dynamic channel 
Digital resistance reading from 1 micro-ohm to 500 ohms 
Calculate equivalent resistance value at reference temperature 
Stores 50 static records and 20 dynamic records 
Built-in 4.5-inch thermal printer 
Weighs less than 44 lbs. 
 
 
 
    
LTCA-10 Cables   
    
Cable Part Number 
[8000-0005] USB Cable 8000-0005 
[8000-0006] RS-232C Cable 8000-0006 
[8000-0015] LTC Control Cable 8000-0015 
[8000-0016] Power + Ground Combination Cable 8000-0016 
[8000-0071] Current and Sense Cable (Positive) 8000-0071 
[8000-0079] V3 Sense Cable 8000-0079 
[8000-0080] DC Current Cable (I) 8000-0080 
[8000-0083] V2 Sense Cable 8000-0083 
[8000-0084] DC Current Cable (I) 8000-0084 
[8000-0087] V1 Sense Cable 8000-0087 
[8000-0103] AC Current Sensor Cable 8000-0103 
[8000-0148] Current and Sense Cable (Negative) 8000-0148 
 
 
    
LTCA-10 Technical Specifications   
    
TYPE Load tap changer analyzer 
PHYSICAL SPECIFICATIONS 21”W x 17”H x 9” D (53 cm x 43 cm x 24 cm); Weight: 33 lbs (15.4 kg) 
OPERATING VOLTAGE 100 – 240 Vac, 50/60 Hz 
RESISTANCE READING RANGE 1 micro-ohm – 500 ohms 
ACCURACY 1 – 19,999 micro-ohms: ±0.5% reading, ±1 count;
20 – 999 milli-ohms: ±1% reading, ±1 count;
1 – 500 ohms: ±1.5% reading, ±1 count 
RESISTANCE CHANNELS Three static resistance reading channels, One dynamic resistance channel 
TEST VOLTAGE 60 Vdc max 
TEST CURRENTS 1 ampere, 5 amperes, 10 amperes 
AC CURRENT INPUT Clamp-on current sensor, 1 – 20 Amperes 
DIS**Y Back-lit LCD Screen (64 x 128 dot graphic ); viewable in bright sunlight and low-light levels 
PRINTER 4.5-inch wide thermal printer 
EXTERNAL DATA STORAGE One USB Flash drive interface port; stores up to 999 test records on a USB Flash drive (not included) 
COMPUTER INTERFACES One RS-232C port, One USB port 
INTERNAL TEST RECORD STORAGE Stores up to 128 static resistance test records (48 tests per record) and 11 dynamic resistance test records 
LOAD TAP CHANGER CONTACT 240 Vac, 1A 
SAFETY Designed to meet UL 61010A-1 and CAN/CSA C22.2 No. 1010.1-92 standards 
ENVIRONMENT Operating: -10C to 50 C (15F to +122 F); Storage: -30 C to 70 C (-22F to +158 F) 
CABLES One 50-foot current cable set, Three 50-foot resistance cable sets, One ground cable, One USB cable, One RS-232C cable, One LTC cable, power cord, cable bag 
OPTIONS Transportation Case 
WARRANTY One year on parts and labor 
Specifications are valid at nominal voltage and ambient temperature of +25C (+77F).
Last updated on February 13, 2009 
 
產品詳細說明： 
 
  
特點:

? LTCA-10為*二代的有載調壓開關分析儀。

? 能精準地測量高電感性之電力變壓器的繞組電阻。

iexcl; 具3個電阻讀值通道, 使能同時測量3個繞組電阻。

? 四線式(kelvin)連接方式，提供高精度電阻測量,且*導線補償。

? 提供一專屬電阻輸入通道, 能對變壓器LTC在操作中的變壓器LTC進行測量，并繪出電阻曲線圖形。

? 使用一電源60Vdc能輸出10A。

能快速而穩定地提供大型變壓器之的電阻讀值。 
--------------------------------------------------------------------------------

規格:

操作電壓
 90～240Vac, 50/60Hz
 
電阻讀值范圍
 1uΩ～500Ω
 
電阻通道
 3個靜態電阻讀值信道、 1個動態電阻讀值信道
 
測試電壓
 較大60Vdc
 
測試電流
 1A、5A、10A
 
AC電流輸入
 鉤式電流傳感器, 1～20A
 
顯示屏
 64x128位圖形式背光LCD, 可視于日光下
 
內建印表機
 寬4.5寸熱感式打印機
 
USB隨身碟界面
 1個USB隨身碟界面埠
 
計算機介界
 USB及RS-232C埠, 19,200Baud
 
測試記錄儲存
 50筆靜態電阻及20筆動態電阻測試記錄; 在USB隨身碟可儲存達999筆測試記錄
 
有載分接頭切換器接點
 240Vac, 1A
 
符合安規
 UL 61010A-1、CAN/CSA C22.2 No. 1010.1-92
 
 

以下是美國vanguard檢測儀器產品列表，歡迎選購：

Circuit Breaker Contact Resistance Meters-斷路器回路電阻測試儀
Auto-Ohm 200 S3
DMOM-200 S3
DMOM-600
Circuit Breaker Timers-斷路器時間機械特性測試儀
CT-3500 S2
CT-6500 S2
CT-7000 S2
CT-7500 S2
CT-8000
DigiTMR S2
DigiTMR S2 PC
Doble Transducer Adapter
MCCB-250
Resistor Transducer Adapter
UPS S2
Current Transformer Testers-電流互感器變比/極性/勵磁特性測試儀
EZCT-10
EZCT-2000A
EZCT-2000B
Relay Test Equipment-多功能繼電保護測試儀
PCI-600
RFD-200 S3
Transformer Turns Ratio Meters-變壓器變比測試儀
ATRT-01 S3
ATRT-01B S3
ATRT-03
ATRT-03 S2
ATRT-03A S2
CVT-765
Tri-Phase
Transformer Winding Resistance Meters-變壓器有載調壓開關測試儀
LTCA-10
LTCA-40
TRM-20
TRM-203
TRM-40
TRM-403
TSB
WRM-10P
Transducers-傳感器
ABB AHMA-8 Mechanism Transducer
Doble Transducer Adapter
Linear Transducer
Resistor Transducer Adapter
Resistor-Type Transducer
Rotary Transducer
Rotary Transducer with Magnetic Mount
Insulation Resistance Meters IRM-5000P-高壓絕緣電阻測試儀IRM-5000P
Vacuum Bottle Testers VBT-60-斷路器真空度耐壓試驗儀VBT-60
Cables-電纜

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