Megger LTW325 2 Wire Non-trip Loop Impedance Tester maxZ R1+R2

Product Code: MEGLTW325

Price

£465.00 ex. VAT £558.00 inc. VAT

In Stock

The entry-level tester in Megger's earth loop tester range, the LTW325 is used for carrying out 2 wire loop impedance measurements on phase to earth or phase to neutral.

Key Features:

2-wire loop testing procedures on phase to earth and phase to neutral
Guaranteed to not trip out RCDs thanks to non-trip loop testing
Noise detection filters out electrical noise that can create erratic readings
Resolution down to 0.01Ω
Portable lightweight instrument with tough carrying case encasing the tester
AUTO start function starts testing as soon as the leads are connected
PFC display up to 20kA

Guaranteed not to trip working RCDs of more than 30mA thanks to a non-trip loop test and compatible with both three and single phase systems, this tester makes performing measurements easier by requiring the use of only 2 test leads in order to carry out measurement procedures. When there is no risk of tripping an RCD it is also possible to use high current loop testing mode.

When carrying out no-trip testing procedures the LTW325 constantly evaluates the level of noise detected on circuitry to ensure that the accuracy of results is not modified by the presence of electrical noise.

The Megger LTW325 is part of the LTW range of earth loop testers. The following table outlines the difference between each of the available models in this series.

Megger LTW325 Comes Supplied With:

Megger LTW325 Earth Loop Tester
BS1363 to 3 x 4mm Socket Leadset
2 Wire Leadset with Croc Clips
Shuko Plug Test Lead – EU-SC
AU/NZ Plug Test Lead – EU-AU
Hard Carry Case
User CD

Megger LTW Series Selection Chart

Function	LTW315	LTW325	LTW335	LTW425
2-Wire Non Tripping Loop Testing	X	X	X	X
2-Wire Fast Test (High Current)	X	X	X	X
110V to 280V Applications	X	X	X	X
50V to 440V Applications		X	X	X
Phase to Phase Testing		X	X	X
20KA PFC Range	X	X	X	X
40KA PFC Range				X
0.01Ω Resolution	X	X	X	X
0.001Ω Resolution				X
AUTO Noise Detection	X	X	X	X
AUTO Start Loop Test	X	X	X	X
Voltage Measurements	X	X	X	X
Frequency Measurements	X	X	X	X
Max Zs Display		X	X	X
R2+R2 Display		X	X	X
Backlit Display (White Light)	X	X	X	X
Built-In Front Cover (Foldaway)	X	X	X	X
IP54 Weatherproof Case	X	X	X	X
Accepts Rechargeable Batteries	X	X	X	X
Test Result Storage			X
Downloadable			X

Megger LTW325 Loop Tester
General Accuracy
All accuracy statements are based on:
Ambient Temperature	23° ±2°C
Nominal Voltage Source	230V a.c ±1%
Voltage Measurements
(ac only)	50V to 440V
Accuracy	±2% ±1V
Frequency Measurements
Range	25Hz to 99.99Hz
Accuracy	±0.1Hz
A warning will be shown if applied voltage exceeds 440V. Damage will occur if applied voltage exceeds 600V rms
Loop Testing Accuracy
±5% ±0.03Ω	@230V a.c
±10% ±0.03Ω	@100V a.c and 280V
±10% ±0.03Ω	@100V a.c and 300V a.c
±15% ±0.03Ω	@50V a.c
No Trip Loop and High Current Loop Test
Source Voltage	50V to 440V (49Hz to 50.1Hz)
Display Range	0.01 to 2000Ω
Accuracy	±5% ± 0.03Ω
No Trip Loop Test Nominal Current	15ma (at nominal 230V a.c supply)
High Current Loop Test	4A (at nominal 230V a.c supply)
Operational Range	0.30 to 1000Ω
Prospective Fault Current (PFC)
Prospective Fault Current	=Measured Source Voltage/Loop Resistance
Maximum Range	No Trip Mode: 20KA
Accuracy is derived from loop test and voltage measurement
Safety	IEC 61010 Designed to IEC61010-1 Designed for 300 volts to Earth Category IV with phase to phase voltages to 440V. Fuse protected to 600 volts rms AC
EN61557	Complies with the following parts of EN61577: Electrical Safety in Low Voltage Systems up to 1000V ac and 1500V dc - Equipment for testing, measuring or monitoring of protective measures: Part 1: General Requirements Part 3 - Loop Resistance
E.M.C	In accordance with IEC61326-1
Power Supply
Battery	8 x 1.5V Cells IEC LR6 Type (AA Alkaline)
Rechargeable	8 x 1.2V NiCd or NIMH Cells
Battery Life	2000 consecutive tests
Mechanical
Weight	1000g ±10% excluding test leads
Dimensions	203 x 148 x 78mm