The TRM-40 is Vanguard Instruments’ third generation transformer winding resistance meter. The TRM-40 is designed specifically to measure DC resistance values of transformer windings, rotating machine windings, or any dc resistance of an inductive device.

The TRM-40 features dual resistance-reading input channels that can measure two winding resistances simultaneously (primary and secondary windings of a transformer). It can provide a fast and stable reading of very large transformers by utilizing a 60Vdc power supply. The TRM-40 is capable of outputting a selectable test current from 1A to 40A.

Since the TRM-40 can accurately measure resistance values from 1 micro-ohm to 500 Ohms, it can be used as micro-ohm meters to measure EHV circuit breaker contact resistance, or for any low resistance measuring application. The TRM-40 can automatically demagnetize the inductive device under test, eliminating the manual task of demagnetizing the transformer core after a resistance test.

  • Auto-discharge circuit for operator safety
  • Demagnetizes transformer after test
  • Selectable test current from 1A to 40A
  • RS-232C, USB, and Bluetooth computer interfaces
  • Built-in thermal printer

TRM-40是Vanguard Instruments的第三代变压器绕组电阻表。TRM-40用于测量变压器绕组，旋转电机绕组或电感设备的任何直流电阻的直流电阻值。

TRM-40具有双电阻读取输入通道，可同时测量两个绕组电阻（变压器的初级和次级绕组）。它可以通过使用60Vdc电源为大型变压器提供快速稳定的读数。TRM-40能够输出1A至40A的可选测试电流。

由于TRM-40可以精确测量1微欧至500欧姆的电阻值，因此可以用作微欧姆表来测量高压断路器的接触电阻，或用于任何低电阻测量应用。TRM-40可以自动对被测电感器件进行消磁，消除了在电阻测试后对变压器磁芯进行消磁的手动任务。

  • 自动放电电路，确保操作员安全
  • 测试后对变压器进行消磁
  • 可选择的测试电流范围为1A至40A
  • RS-232C，USB和蓝牙计算机接口
  • 内置热敏打印机

单相绕组电阻测试仪（测试电流可达40A，具有自动放电和消磁功能）

产品功能和性能：

主要用来测量变压器绕组、旋转电机绕组的直流电阻，或者任何感性设备的直流电阻。

产品卖点：

1）单相变压器电阻测试仪；

2）测试电压为60V，最大测试直流电流为 40 A；

3）双电阻读取输入通道；

4）计算任何温度下的等效电阻值；

5）每次测试后能自动放电和消磁，从而保障测试人员的安全；

6）使用电阻图表来检测LTC触点的先通后断状态；

7）USB 闪存，USB、RS-232及蓝牙通讯接口；

8）单机或电脑控制运行。

TRM-40

Cables

CablePart Number
[8000-0005] USB Cable [ 6′ (1.83m) ]8000-0005
[8000-0006] RS-232C Cable [ 6′ (1.83m) ]8000-0006
[8000-0015] LTC Control Cable [ 15′ (4.57m) ]8000-0015
[8000-0016] Power + Ground Combination Cable8000-0016
[8000-0071] Current and Sense Cable (Positive) [ 50′ (15.24m) ]8000-0071
[8000-0083] V2 Sense Cable [ 50′ (15.24m) ]8000-0083
[8000-0087] V1 Sense Cable [ 50′ (15.24m) ]8000-0087
[8000-0148] Current and Sense Cable (Negative) [ 50′ (15.24m) ]8000-0148

TRM-40

Technical Specifications

TYPEPortable transformer winding resistance meter
PHYSICAL SPECIFICATIONS21” W x 17” H x 9” D (53 cm x 43 cm x 24 cm); Weight: 33 lbs (15.4Kg)
OPERATING VOLTAGE100 – 240 Vac, 50/60 Hz
RESISTANCE READING RANGE1 micro-ohm to 500 Ohms
ACCURACY1 – 19,999 micro-ohms: ±0.5% reading, ±1 count
20 – 999 milliohms: ±1% reading, ±1 count
1 – 500 Ohms: ±1.5% reading, ±1 count
TEST CURRENT1-40A in 1A increments
TEST VOLTAGE60 Vdc charging, 18V DC max during measurement
RESISTANCE CHANNELSTwo static resistance reading channels
DISPLAYBack-lit LCD (64 x 128 dot graphic), viewable in direct sunlight and low light levels
PRINTERBuilt-in 2.5″ wide thermal printer
INTERNAL DATA STORAGE256 static test records (each can contain up to 111 readings) and 120 dynamic
test records
EXTERNAL DATA STORAGEUp to 999 test records on external USB Flash drive.
COMPUTER INTERFACESRS-232C, USB, Bluetooth
ENVIRONMENTOperating: -10C to 50C (15F to +122F)
Storage: (-30C to 70C (-22F to +158F)
HUMIDITY (MAX)90% RH @ 40 C (104 F) non-condensing
ALTITUDE (MAX)2000m (6562 ft) to full safety specifications
CABLESOne 50-foot current cable set, two 50-foot resistance sense cable set,
One LTC control cable, One ground cable, one power cord,
One RS-232C cable, one USB cable
OPTIONSTransportation Case
WARRANTYOne year on parts and labor
Specifications are valid at nominal voltage and ambient temperature of +25C (+77F).

TRM-40

电缆

电缆零件号
[8000-0005] USB线[6’（1.83m）]8000-0005
[8000-0006] RS-232C电缆[6’（1.83m）]8000-0006
[8000-0015] LTC控制电缆[15’（4.57m）]8000-0015
[8000-0016]电源+接地组合电缆8000-0016
[8000-0071]电流和感应电缆（正极）[50’（15.24m）]8000-0071
[8000-0083] V2传感电缆[50’（15.24m）]8000-0083
[8000-0087] V1传感电缆[50’（15.24m）]8000-0087
[8000-0148]电流和感应电缆（负极）[50’（15.24m）]8000-0148

TRM-40

技术规格

类型便携式变压器绕组电阻表
物理规格21“宽x 17”高x 9“深（53厘米×43厘米×24厘米）;重量：33磅（15.4Kg）
工作电压100 – 240 Vac，50/60 Hz
电阻读数范围1微欧至500欧姆
准确性1 – 19,999微欧姆：±0.5％读数，±1计数
20 – 999毫欧：±1％读数，±1计数
1 – 500欧姆：±1.5％读数，±1计数
测试当前1-40A，增量为1A
测试电压60 Vdc充电，测量期间最大18V DC
抵抗渠道两个静态电阻读数通道
显示背光LCD（64 x 128点图形），可在阳光直射和低光照条件下观看
打印机内置2.5“宽热敏打印机
内部数据存储256个静态测试记录（每个最多可包含111个读数）和120个动态
测试记录
外部数据存储外部USB闪存盘上最多999条测试记录。
计算机接口RS-232C，USB，蓝牙
环境工作温度：-10C至50C（15F至+122F）
储存：（ – 30C至70C（-22F至+158F）
湿度（最大值）90％RH @40C（104F）无冷凝
海拔（最高）完全安全规格2000米（6562英尺）
电缆一根50英尺电流电缆套件，两根50英尺电阻检测电缆套件，
一根LTC控制电缆，一根接地电缆，一根电源线，
一根RS-232C电缆，一根USB电缆
OPTIONS运输案例
保证零件和人工一年
规格在标称电压和环境温度+25C（+77F）下有效。