南澳電氣NAYJFH型PT二次壓降負(fù)載在線測(cè)試裝置功能簡(jiǎn)介

⑴能實(shí)現(xiàn)三相三線，三相四線、單相全自動(dòng)測(cè)量；

⑵ 使用工程塑料機(jī)箱，結(jié)識(shí)耐用，有效保障測(cè)試人員及系統(tǒng)安全；

⑶ 有量程自動(dòng)切換功能，保證測(cè)試精度；

⑷ 采用電子式原理線路結(jié)合DSP技術(shù)是使測(cè)試穩(wěn)定性好，抗*力強(qiáng)；

⑸ 測(cè)量完畢，自動(dòng)計(jì)算和負(fù)荷相關(guān)的各項(xiàng)參數(shù)，便于客戶分析和試驗(yàn)。

⑹ 采用大屏幕中英文液晶顯示，所有操作均由中英文菜單提示； 數(shù)據(jù)具備掉電存貯及瀏覽功能，能與計(jì)算機(jī)聯(lián)機(jī)傳送數(shù)據(jù)。

⑺ 采用大容量7.2V11Ah鋰電池供電，對(duì)測(cè)試回路不產(chǎn)生任何影響，避免系統(tǒng)出現(xiàn)保護(hù)的情況。同時(shí)在現(xiàn)場(chǎng)無(wú)供電電源的情況下使用。

⑻ 二次壓降負(fù)載測(cè)試，采用鉗型電流表采樣電流，不需要斷開(kāi)二次回路。可以實(shí)現(xiàn)不停電在線測(cè)量。自動(dòng)切換量程：測(cè)量過(guò)程中可以根據(jù)測(cè)試對(duì)象數(shù)值的不同切換到不同的位置，使測(cè)量精度和顯示位數(shù)得到保證。

⑼ 工作時(shí)間可以長(zhǎng)達(dá)24小時(shí)（zui長(zhǎng)）。

⑽ 附有輕巧充電器，方便測(cè)量，在電池電量不足的情況下可以外接充電器測(cè)量。

⑾ 儀器體積小，重量輕。

⑿ 寬闊的二次工作電流/電壓范圍。在50mA的工作電流下，能分辨1mΩ的電阻和電抗，能測(cè)試二次額定電流為5A的S級(jí)電流互感器的在線實(shí)際負(fù)荷；在5V的工作電壓下，能分辨0.001mS的電導(dǎo)和電納。

⒀ 能存儲(chǔ)480組測(cè)量數(shù)據(jù)，斷電后能保持十年。

⒁ 中英文界面大屏幕顯示，帶有RS-232通訊接口。

南澳電氣NAYJFH型PT二次壓降負(fù)載在線測(cè)試裝置主要技術(shù)指標(biāo)

1. 環(huán)境條件

1). 溫度：－5°C～40°C

2). 相對(duì)濕度：<95%（25°C）

3). 海拔高度：<2500m

4). 外界干擾：無(wú)特強(qiáng)震動(dòng)、無(wú)特強(qiáng)電磁場(chǎng)

2. 二次壓降負(fù)載測(cè)試時(shí)儀器主要技術(shù)指標(biāo)

1). 測(cè)量范圍：比差：0.001%～19.99% 角差：0.01’ ～599’

2). 分 辨 率：比差：0.001% 角差：0.01’

3). 儀器基本誤差

 ——DX=±(1%×X+1%×Y±2個(gè)字);

 ——DY=±(1%×X+1%×Y±2個(gè)字)。

 2個(gè)字——儀器的量化誤差

4). 電壓表頭準(zhǔn)確度：0.5%

5). 工作范圍

 ——電壓：(50～120)V

6). 儀器指示動(dòng)作值(提示錯(cuò)誤)

 ——誤差：比差大于20%或角差大于600’。

 ——電壓：電壓<2.0V。

3.  PT二次負(fù)荷測(cè)試時(shí)儀器主要技術(shù)指標(biāo)

1).  PT二次負(fù)荷測(cè)試

 ——導(dǎo)納測(cè)量范圍:0.1ms—50.0ms

 ——導(dǎo)納測(cè)量準(zhǔn)確度:

 ——二次電壓（50V－120V）

 DX=±(1%×X+1%×Y±2個(gè)字)

 DY=±(1%×X+1%×Y±2個(gè)字)

 2個(gè)字——儀器的量化誤差

注意：測(cè)量值在0.2mS以下時(shí)，測(cè)試電壓應(yīng)保持在50V以上，同時(shí)注意鉗表的穿心導(dǎo)線保持居中。此時(shí)儀器量化誤差為5個(gè)字

2). 電壓表頭：0.5%

4.南澳電氣NAYJFH型PT二次壓降負(fù)載在線測(cè)試裝置主要技術(shù)指標(biāo)

 ——阻抗測(cè)量范圍：0.1Ω—50.0Ω

 ——阻抗測(cè)量準(zhǔn)確度：

 DX=±(1%×X+1%×Y±2個(gè)字)

 DY=±(1%×X+1%×Y±2個(gè)字)

 2個(gè)字——儀器的量化誤差

 電流表頭：1%

Main Features

⑴ to achieve three-phase three-wire, three-phase four-wire, single-phase automatic measurement;

⑵ use of engineering plastic chassis, get to know durable, effective protection of test personnel and system security;

⑶ instrument has a range of automatic switching function to ensure that the test accuracy;

⑷ the use of electronic principles of the line with DSP technology is to make the test stability, anti-interference ability;

⑸ measurement is completed, the automatic calculation and load-related parameters, to facilitate customer analysis and testing.

⑹ using large-screen LCD display in English, all operations by the Chinese and English menu prompts; data with power-down storage and browsing capabilities, can send data with the computer on-line.

⑺ 7.2V11Ah lithium battery with high-capacity power supply, the test circuit does not have any effect, to avoid the system appears to protect the situation. While in the field without power supply in the case of use.

⑻ second load test, using clamp-type ammeter sampling current, do not disconnect the secondary circuit. Can achieve non-blackout on-line measurement. Automatic switching range: the measurement process can be different according to the test object to switch to a different location, so that measurement accuracy and display digits are guaranteed.

⑼ working hours can be up to 24 hours (the longest).

⑽ with a lightweight charger to facilitate measurement, in the case of battery power can be an external charger measurements.

⑾ equipment, small size, light weight.

⑿ wide secondary operating current / voltage range. In the 50mA operating current, can distinguish 1mΩ resistance and reactance, can test the secondary rated current of 5A S-class current transformer on-line actual load; 5V operating voltage, can distinguish between 0.001mS conductance and susceptance .

⒀ can store 480 sets of measurement data, power can be maintained for ten years.

⒁ Chinese and English interface large screen display, with RS-232 communication interface.

Main Specifications

1. Environmental conditions

1). Temperature: -5C ~ 40C

2). Relative humidity: <95% (25C)

3). Altitude: <2500m

4). External interference: no special strong vibration, no special strong electromagnetic field

2. Secondary pressure drop test equipment, the main technical indicators

1) Measuring range: difference: 0.001% to 19.99% Angle difference: 0.01 'to 599'

2) Resolution: Difference: 0.001% Angle difference: 0.01 '

3) Basic error of the instrument

 - X = (1% X + 1% Y2 words);

 - Y = (1% X + 1% Y2 words).

 2 words - quantization error of the instrument

4). Voltage meter accuracy: 0.5%

Scope of Work

 - Voltage: (50 to 120) V

6). Instrument indicates the action value (prompt error)

 - Error: the difference is greater than 20% or the difference is greater than 600 '.

 - Voltage: Voltage <2.0V.

3. PT secondary load test equipment, the main technical indicators

1). PT secondary load test

 - Admittance measurement range: 0.1ms-50.0ms

 - Admittance Measurement Accuracy:

 - Secondary voltage (50V-120V)

 X = (1% X + 1% Y2 words)

 Y = (1% X + 1% Y2 words)

 2 words - quantization error of the instrument

Note: When the measured value is less than 0.2mS, the test voltage should be kept above 50V, and pay attention to the centripetal wire of the clamp. At this point the instrument quantization error of 5 words

2). Voltage meter head: 0.5%

4. CT secondary load test equipment, the main technical indicators

 - Impedance measurement range: 0.1Ω-50.0Ω

 - Impedance measurement accuracy:

 X = (1% X + 1% Y2 words)

 Y = (1% X + 1% Y2 words)

 2 words - quantization error of the instrument

 Current meter head: 1%