Ground Resistance Meter without Probes LTW335

Ground meter / bifilar loop tester without disconnection / operation from 50 V to 440 V / loop test with central outlet of 110 V / installation test CAT IV / automatic start operation

- Prueba bifilar

- Loop test without disconnection

- High current loop test

- Noise detection

- AUTO STAR

- High-resolution test

- PFC viewer

- Bifilar loop tester without disconnection

- Quick bilayer test (high current)

- Applications from 110 V to 280 V

- Applications from 50 V to 440 V

- Prueba Fase a Fase

- Stores test results

- Downloads the results of the same

Technical specifications of the ground meter

Accuracy

All accuracy claims are based on:

Temperatura ambiente

23ºC ±2ºC

Nominal voltage of the power supply

230 Vca ±1%

Voltage measurement

(solo ca)

50V a 440 V

Accuracy

±2% ±1V

Frequency measurement

Rango

25Hz a 99,99Hz

Accuracy

±0,1Hz

A warning will be displayed if the applied voltage exceeds 440V

Damage will occur if the applied voltage exceeds 600V rms

Loop test

Accuracy

±5% ±0.03 ½ at 230 V AC.

±15% ±0.03 ½ at 50 V AC.

Loop test WITHOUT DISCONNECTION and high current

Source voltage

50 V a 440 V (50Hz)

Rango mostrado

0,01 ≈ until 2000 Ω

Accuracy

±5% ±0,03 Ω

Nominal test current

Loop test without disconnection

15mA (en un suministro 230 Vca nominal)

High current loop test

4A (en un suministro 230 Vca nominal)

EN61557

Operating range

0,30 Ω up to 1000 Ω

Predicted fault current (PFC)

Expected fault current = Measured source voltage / loop resistance

Maximum range

Loop test without disconnection 20 KA

High current loop test 20 KA

High-resolution loop test 40 KA

 Accuracy derives from loop testing and voltage measurement

Condiciones ambientales

Temperatura

-10°C a +50°C

Humedad

90% non-condensing H.R. at +40°C max.

Storage temperature

-25°C a +70°C

Maximum altitude

2000m for a total safety specification

Entry of dust and water

IP54

Seguridad

IEC61010

Designed according to IEC61010-1

Designed for 300V to Ground Category IV, with Phase to Phase voltages up to 440 V

Fusibles protegidos a 600 V rms ca

EN61557

Complies with the following parts of EN61557, Electrical safety in low voltage systems up to 1000V AC and 1500V DC - Equipment for testing, measuring, or monitoring protective measures: 

Parte 1 - Requerimientos generales

Part 3 - Loop resistance

E.M.C

In accordance with IEC61326-1

Power supply

Battery

8 batteries x 1.5 V type IEC LR6 (AA alkaline)

Recargables

8 cells x 1.2V NiCd or NiMH

Battery life: 2000 consecutive tests

Peso

1000g ±10% excluding test connections.

Dimensions

203 x 148 x 78 mm

Contents of the shipment

1 x LTW335 earth resistance meter with measuring probes 

1 x Cubierta delantera incorporada

1 x Cubierta impermeable IP54

1 x Durable case

1 x CD with useful information for the user