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yourself with the instrument and 
this manual. READ AND REVIEW THIS 
MANUAL FREQUENTLY.

4.2 Visual Inspection of the 

Meter

Before use, inspect the Meter for 
any conditions which would make 
it unsafe. Check for missing or loose 
parts. Check also for damage. Make 
certain that the Meter is free from oils, 
grease, dirt and excessive moisture. 
IF ANY OF THESE CONDITIONS ARE 
FOUND, DO NOT USE THE METER.

4.3 Visual Inspection of the 

Test Leads 

Before use, check the test leads for 
deterioration of the insulation.

 WARNING:

 IF THE TEST LEADS ARE 

IN ANY WAY DAMAGED OR DEGRADED, 
DO NOT USE THEM. THEY MUST BE 
REPLACED.

4.4 Power Up / Self Test

Press and hold the ON-OFF 
pushbutton in order to power up and 
initiate self test. 

The Meter beeps and all LCD 
segments will turn on as part of a 
self–test routine. 

Release the ON-OFF pushbutton to 
initialize the Meter.

Replace the battery before using the 
Meter when the low battery indicator 
is displayed on the LCD. If the Meter 
does not turn ON, the battery is 
missing or worn out. To replace the 
battery, see 5.1 Battery Replacement.

The Meter shuts OFF after 20 minutes 
if no pushbutton is pressed, even 
though it is making a measurement 
in any measurement function just 
except the MIN/MAX RECORD mode 
and the Energy Integrator mode.

4.5 Measuring Power

When the Meter has been powered 
up, it defaults in the true power 
measurement mode and auto-
ranging mode (POWER, kW and 
AUTO displayed).

 WARNING:

 MAXIMUM INPUT 

VOLTAGE OF AC VOLT RANGE IS 750V 
RMS. DO NOT ATTEMPT TO MEASURE 
ANY VOLTAGE THAT EXCEEDS 750V RMS 
TO AVOID ELECTRICAL SHOCK HAZARD 
OR DAMAGE TO THE INSTRUMENT.

1. Put the Meter in the W (or VA or 
VAR) range.
2. Connect the black and red test 
leads to the COM and V terminals 
respectively.
3. Clamp the jaws around the current 
carrying conductor under test, 
ensuring a good contact between the 
closing faces of the jaws.
4. Apply the test leads to the circuit 
under test and read the displayed 

Summary of Contents for UD370

Page 1: ...Lea entienda y siga las instrucciones de seguridad contenidas en este documento antes de operar esta herramienta WARNING Read understand and follow the safety rules in this document before operating t...

Page 2: ...5 MANTENIMIENTO Y CALIBRACI N 8 5 1 Reemplazo de la bater a 5 2 Mantenimiento 5 3 Calibraci n 6 MEDICIONES DE POTENCIA TRIF SICA 9 7 ADAPTADOR 3 FASES OPCIONAL 9 8 ESPECIFICACIONES T CNICAS 10 8 1 Es...

Page 3: ...strados en las especificaciones el ctricas Nunca mida corrientes mientras las puntas de prueba se encuentren insertas en los conectores de entrada Nunca use el medidor o las puntas de prueba cuya prot...

Page 4: ...8 V Terminal de entrada para medici n de voltaje 9 KVAR Selecciona el modo de medici n de Potencia Reactiva 10 COM Terminal com n neutro 11 KW Selecciona el modo de medici n de Potencia Real 12 KVA Se...

Page 5: ...integrador de energ a est activado 24 Indicadores de unidades de medici n Estos s mbolos indican las unidades de medici n de cada lectura en cualquier funci n 25 ENERGY Mostrado en pantalla cuando el...

Page 6: ...R FORMA DA ADAS O DEGRADADAS NO LAS USE DEBER N SER REEMPLAZADAS 4 4 Auto prueba Encendido Presione y sostenga el bot n ON OFF para encender el medidor e iniciar la auto prueba El medidor emite un ton...

Page 7: ...s quijadas del gancho alrededor del conductor de corriente a ser probado Aseg rese de que exista buen contacto en las caras de contacto de las quijadas 4 Aplique las puntas de prueba al circuito a ser...

Page 8: ...el uso de la bater a alcalina especificada u otras bater as de larga duraci n Si el indicador low battery es mostrado en pantalla reemplace la bater a usando los siguientes procedimientos ADVERTENCIA...

Page 9: ...anualmente Respecto al servicio o informaci n sobre la calibraci n contacte a su distribuidor m s cercano 6 MEDICIONES DE POTENCIA TRIF SICA Refi rase a las siguientes figuras para las maneras sugeri...

Page 10: ...la medici n en un sistema desbalanceado 3 fases 3 hilos Repita las conexiones mostradas en las figuras anteriores y acumule los valores mostrados en pantalla para obtener la medici n de potencia trif...

Page 11: ...cional no sinusoidal Factor de cresta 1 3 3 5 Error de lectura 0 5 3 Para la forma de onda continua de 45 Hz a 65 Hz menor a 1000A pico Medici n de Volts CA Rango Resoluci n 400 V 750 V 0 1 V 1 V Pres...

Page 12: ...a 450 Hz 8 3 Especificaciones generales Pantalla LCD de 4 d gitos para potencia LCD de 6 d gitos para energ a Velocidad de conversi n A D aprox 4 veces seg para digital M ximo voltaje a Tierra 600V RM...

Page 13: ...ntegrating Energy 5 MAINTENANCE AND CALIBRATION 18 5 1 Battery Replacement 5 2 Maintenance 5 3 Calibration 6 THREE PHASE POWER MEASUREMENTS 19 7 THREE PHASE ADAPTOR OPTIONAL 20 8 TECHNICAL SPECIFICATI...

Page 14: ...her than the maximum limits of the input values shown in the electrical specifications Never measure any current while the test leads are inserted into the input jacks Never use the Meter or test lead...

Page 15: ...reactive power measurement mode 10 COM Common Terminal 11 kW Selects true power measurement mode 12 kVA Selects apparent power measurement mode 13 MIN MAX Selects MAX MIN recording mode and displays r...

Page 16: ...isplayed when ENERGY pushbutton has been pressed 26 Automatically indicate negative digital displays in the power factor COS measurement mode 27 AUTO Displayed when the auto ranging mode is active 28...

Page 17: ...battery before using the Meter when the low battery indicator is displayed on the LCD If the Meter does not turn ON the battery is missing or worn out To replace the battery see 5 1 Battery Replacemen...

Page 18: ...MAXIMUM INPUT CURRENT IS 700A RMS BEFORE SELECTING THE CURRENT MEA SUREMENT FUNCTION ENSURE THAT THE TEST LEADS ARE DISCONNECTED FROM THE INSTRUMENT 1 Put the Meter in the A range 2 Clamp the jaws ar...

Page 19: ...e battery cover Then insert the battery into position Dress the battery leads so that they will not be pinched between the case bottom and the case top Do not discard battery cover 6 Replace the rear...

Page 20: ...r Unbalanced 3 phase 3 wire system Measurement Connections in a Balanced 3 phase 3 wire system 1 Set the Model 370 at kW or kVA or Cos range position 2 Hook on the 3 phase adaptor to the input jacks o...

Page 21: ...n The accuracy is specified from 5 to 100 of the selected range True Power Measurement Range Resolution 400 Kw 750 Kw 0 1 kW 1 Kw Accuracy 1 5 2 Frequency 45 Hz to 450 Hz Overload 750V RMS 1000A PEAK...

Page 22: ...eading 0 5 3 For the continuous waveform of 45 Hz to 65 Hz less than 750V RMS True Power Energy Integrator Range Resolution 40000 kWh 75000 kWh 0 1 kWh 1 kWh Accuracy 1 5 2 Frequency 45 Hz to 450 Hz M...

Page 23: ...ow Battery Indication The is displayed when the battery voltage drops below the operating voltage Battery Life 80hours typical alkaline Battery Type NEDA 1604A 9V or 6LF22 9V Maximum Conductor Size 51...

Page 24: ...s casos a Cuando la herramienta se haya utilizado en condiciones distintas a las normales b Cuando el producto hubiera sido alterado de su composici n original o reparado por personas no autorizadas p...

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