產(chǎn)品簡介

根據(jù)JJG313-94《測量用電流互感器》，JJG313-93《測量用電壓互感器》要求互感器交接時(shí)和更換繞組后必須進(jìn)行現(xiàn)場變比檢查試驗(yàn)。

常規(guī)互感器變比的檢查方法是電流法，從原理上講是一種容易理解可行的檢查方法，但是隨著系統(tǒng)容量的增加，電流互感器的一次電流越來越大，可達(dá)數(shù)萬安培;現(xiàn)場加電流至數(shù)百安培已有困難，數(shù)千安培或數(shù)萬安培幾乎不可能，況且體積龐大，重量重達(dá)幾百公斤或幾噸，現(xiàn)場使用更為困難，如采用小電流法，由于電流互感器磁感度、線性度、阻抗、漏抗的影響會(huì)使電流互感器誤差驟增，失去了變比檢查的意義。

體積小、重量輕、測量范圍廣、便于攜帶，適于現(xiàn)場使用的電流互感器變比測試儀越來越成為互感器測試工作的必備手段。NABZ 互感器變比極性測試儀就是南澳電氣公司總結(jié)國內(nèi)外互感器特性,運(yùn)用目前研究理論及成果，結(jié)合現(xiàn)場使用的要求研制而成的。

產(chǎn)品別名

CT變比極性在線檢測儀，高壓互感器變比測試儀、高壓CT變比測試儀、高低壓CT變比測試儀、高低壓互感器變比測試儀、帶電測量高壓CT變比測試儀，高壓CT變比測試儀

產(chǎn)品特性

1、首家采用電壓測量法，體積小重量輕，便攜式,滿足現(xiàn)場工作輕便性要求。

2、電壓波形由單片機(jī)程序產(chǎn)生，干凈純正，免除了電網(wǎng)干擾。

3、內(nèi)部采用恒壓源，讀數(shù)穩(wěn)定。

4、適用于從幾十安培至幾萬安培的所有電流互感器。所有電磁式電壓互感器。

5、能直接顯示變比值。

6、電子法測量互感器極性，簡單直觀。

產(chǎn)品參數(shù)

項(xiàng)   目

參   數(shù)

工作電源輸入

AC220V/50Hz

變比測量范圍

5A/5A------25000A/5A

5A/1A-------5000A/1A

電磁式電壓互感器全系列

測量精度

0.2%

體   積

280mm*220mm*120mm

重   量

12Kg

Product introduction

Differ from the traditional structure,specially for measuring high and lowvoltage secondary circuit of a current, variable ratio, relative toother, polarity, leakage current and well-designed. Using thelatest CT technology and mask figures integration technology. By adedicated high voltage detector, low current clamp, the host, highvoltage insulation rod, monitoring software and other components,and its wireless transmission of test data can penetrate obstaclesto multi-storey buildings, linear transmission distance up to 30meters. If you do not use insulated rod, but also can be used ashigh-precision voltage clamp meter, leakage current meter canaccurately measure 0.00mA ~ 1000A current or leakagecurrent.

Alsocalled name

CT ratio polarity line detector, highvoltage transformer ratio tester, high voltage CT ratio tester,high voltage CT ratio tester, high voltage transformer ratiotester, live measurement of high voltage CT ratio tester, high CTratio tester

The Characteristics of theproducts

1.Current clamp is made of specialalloys , using the latest CT technology and magnetic shieldingtechnology , not affected by external magnetic field, to ensureuninterrupted year-round monitoring of high-precision, highstability, high reliability.

2.More clearly with blue LCD display andlarge storage space, can store 3000 groups of data .

3.Monitoring software with an onlinereal-time monitoring and historical inquiry , dynamic display,waveform indication , ratio, frequency indication , with themaximum, minimum , average indication with alarm settings and alarmindicator, historical data read , inspection , preservation,analysis, processing , sorting, curve fitting , reports, printingand other functions .

4.High-pressure detector connected tothe insulating rod can be used for the following 60KV high voltageline current measurements on both sides of the current transformersize , ratio test , on-line current monitoring , and its specialhigh-voltage current clamp by pushing or pulling back or insulatingrod can easily clamp evacuation measured wire , time-savingshortcuts , widely used in substations and industrial and miningenterprises ﹑power plants , inspection station,electrical maintenance department for current sensing , electricalinspectors , field operations, such as electricians . Lightweightinsulating rod with a moisture- impact , bending resistance, hightemperature resistance, high insulation , easycheck data, so on.

The parameters of theproducts

Function

High and low voltage secondary circuit of acurrent ratio, polarity , phase types, leakage current onlinemonitoring ; transformer sides the current size , ratio -linemonitoring

Power source

 DC6V alkaline batteries (1.5V AAA × 4)approximately 30 hours of continuous work

Test methods

Clamp CT

Transmission

Wireless transmission, transmission distance ofabout 30m straight line

Display Mode

LCD: 128dots × 64dots; blue backlight function ,suitable for dark places

LCD Size

Display field : 44mm × 27mm

Meter size

Host : width height thickness 75mm × 170mm ×30mm
Voltage tester : width heightthickness 76mm × 255mm × 31mm
LowCurrent Clamp : Width height thickness 63mm × 160mm ×23mm

Jaw size

 Voltage tester :φ48mm
Low current clamp :φ30mm

Sampling rate

2 times / sec

Measuring range

High voltage detector : 0.0mA ~1000A
Low Current Clamp : 0.00mA ~10A

Resolution

High voltage detector : 0.1mA; Low Current Clamp: 0.01mA

Gearshift

Automatic gearshift

Primary circuit testaccuracy
23 ℃ ± 3 ℃, below 80%RH

0.0mA～10.0A:      ±1%±5dgt 

10.0A～49.9A:     ±2%±5dgt 

50.0A～199.9A:    ±3%±5dgt

200A～600A:       ±4%±5dgt   

601A～1000A:      ±5%±5dgt  

Secondary circuit testaccuracy
23 ℃ ± 3 ℃, below 80%RH

0.00～10A: ±1%±5dgt

Ratio

Three kinds of variables than the display : ( asecondary circuit measured current ratio ; commuted to thesecondary circuit 5A ratio ; to the 10kV-YY transformer 10kV/380Vcommuted ratio ) , the maximum ratio of 1:1 ten million (1.0K7)

Data storage

3000 groups , press the HOLD key to keep thedata and numbered storage automatically (not affact by replace thebattery or a sudden brownout)

Line Voltage

The following 60kV line test ( must be insulatedwith 5 lever operation )

Data Hold

Press HOLD to hold the data , HOLD symbol isdisplayed , press the HOLD button to cancel maintained

Data checking

Press HOLD + POWER key to enter the Data RecallMode

Overflow Show

Overrange overflow function : "OL A" symbol isdisplayed

No signal indication

When the host transmits a signal is not receivedprompt " No Signal"

Automatic shutdown

About 15 minutes after the start , the meterwill automatically shut down

Battery voltage

When the battery voltage is lower than 4.8V, lowbattery symbol appears , replace the battery alert

Instrumentation quality

Host : 240g ( with battery)
High voltage detector : 335g ( withbattery )
Low current clamp :170g
Instrument total mass :12Kg ( including insulation rod and battery)

Outside interference

No particularly strong electromagnetic fields ;without 433MHz, 315 MHz co-channel interference

Working temperature and humidity

-25℃～45℃；below80%Rh

Storage Temperature and Humidity

-10℃～60℃；below 70%Rh

Insulating rod dimensions

φ32mm, 1m / section ( 5 standard ) , can beextended .

Low current clamp wire length

 Standard 2 m ( distance can be lengthenedaccording to the site )

Dielectric Strength

High voltage detector : AC100kV/rms ( Section 5insulating rod with high current clamp clamp core)
Host and low-voltage current clamp :AC1000V/rms

Structure

Drip Ⅱ type ( high voltage detector )

Safety Rules

IEC1010-1, IEC1010-2-032, Pollution degree 2,CAT Ⅲ (600V), IEC61326 (EMC standard )

Accessories

Clamp : 1 ; Receiver: 1 ; current clamp : 1 ;Disc : 1 ; RS232 communication cable : 1 ; meter box : 1 ;insulating rod ( 1 m ) : 5 ; batteries (LR03) : 8