Megger RCDT320 RCD Tester

Megger's mid-range RCD tester (part of the RCDT300 series), the RCDT320 improves upon the basic functionality of the RCDT310 and has several advanced features not available on the previous model.

This residual current device (RCD) tester is suitable for use on a wide variety of RCD types, including selective breakers, DC breakers (1/2 I, I, I and 5I), 30/100/300/500mA and 10mA / 1A RCDs and is used to evaluate that they are correctly implemented into electrical systems and trip out at the appropriate level.

One of the main differences between this tester and the RCDT310 is the inclusion of ramp and auto sequence testing procedures. The ramp function automatically gradually increases the current level applied during the tester while the auto sequence testing automatically cycles through the necessary testing procedures to get quick, accurate and comprehensive results with minimal input from the user.

You can view the exact difference between each model in Megger's RCDT300 series by taking a look at the table in the tech specs section further below.

Megger RCDT320 RCD Tester Key Features

Performs 1/2 I, 1 x I and 5 x I tests on RCDs rated at 30mA, 100mA, 300mA and 500mA
Suitable for use with both general and selective (time-delayed) RCD types
Also suitable for testing RCDs rated at 10mA and 1000mA
DC RCD testing
Selectable polarity - test at 0 or 180°
Measurements of touch voltage at the start of the test (with selectable voltage inhibit of 25V or 50V)
Rubber-armoured casing - protects the tester from harm at all times in even the most arduous industrial environments
Rigid display cover - folds down and protects the screen and tester functions when not in use
Colour-coded ranges - easily choose what you need (user guide also included in tester lid)
Ramp testing - current level is slowly increased until the RCD trips
Automatic testing - all this mode requires is you to reset the RCD each time the test completes. All results are stored on the meter for reference

What's Included?

Megger RCDT320 RCD Tester
Mains Plug Test Lead (BS1363)
2-Wire Test Lead With Prods and Clips

Accessories

There are a number of accessories available for the Megger RCDT320 RCD Tester. Please contact our sales team for further information or to add an item listed below to an order.

Our SKU	Megger's Part Code	Product
MEGRCDA1	6231-601	UK Mains Plug Test Leadset 3-pin 1 wire (BS1363 plug)
MEGLTA2	1001-883	Test lead set 3-wire Red/Black/Green with prods/clips (exposed tip)
1001-976	1003-132B	Test Lead Set Red/Green Unfused (Boxed)
1000-562	1000-562	Test Lead Replacement Probe Cap [Clear] Bag of 20
6220-810	1004-323B	SIA10 Socket Interface Adaptor UK to 3 Leads x 4mm (Boxed)
1005-469	1005-469	SIA10 Socket Interface Adaptor LTW
1004-610	1004-610	Lead USB Type A to Type B 1.8m Data/Printer Cable
1007-003	1007-003	Blow Moulded Case Catch - Pack of 10
1007-167	1007-167	Blow Moulded Case MIT/LT/RCDT 300 Series

Megger RCDT300 Range Differences

Model Number	RCD310	RCDT320	RCDT330
1/2 I, 5I RCD Trip Time Test	√	√	√
Selective Breakers	√	√	√
DC Breakers (1/2 I, I, 5I)	√	√	√
30, 100, 300, 500mA RCDs	√	√	√
10mA/1A RCDs	-	√	√
RCD Trip Current Test (RAMP)	-	√	√
Auto Sequence Test	-	√	√
0/180° Polarity Selection	√	√	√
Touch Voltage Display Inhibit (Selectable)	√	√	√
Max Touch Voltage (25V/50V)	√	√	√
Operating Range 100 to 280V	√	-	-
Operating Range 50 to 280V	-	√	√
Programmable RCDs	-	-	√
Frequency Measurement	-	√	√
3-Phase Safe	√	√	√
Large, Clear Display	√	√	√
Backlight	-	√	√
Battery Status Indication	√	√	√
Auto Power Down	√	√	√
Fuse Blown Indication	√	√	√
IP54 Weatherproof	√	√	√
Result Storage	-	-	√
Downloadable	-	-	√
USB Interface	-	-	√
IEC61010-1 CAT III 300V	√	√	√
EN61557	√	√	√

Megger RCDT300 Series Technical Specifications

RCD Test Ranges (to EN61557-6)
Supply Voltage	RCDT310 100 V - 280 V 45 Hz to 65 Hz RCDT320 50 V - 280 V 45 Hz to 65 Hz RCDT330 50 V - 280 V 45 Hz to 65 Hz Minimum voltage 71 V for 300 mA RCDs, 100 V for 500 mA RCDs and 205 V for 1000 mA RCDs
Test Current Accuracy
No Trip Test	(1/2I) –8% to –2%
Trip Test	(I, 5I) +2% to +8%
Trip Time	±1% ±1ms
Voltage Measurement (All Models)
Range (AC)	0 V - 300 V 25 Hz to 450 Hz
Accuracy	±2% ±2 digits
Frequency (RCDT320/RCDT330 Only)
Range	25 Hz to 450 Hz
Accuracy	25.0 Hz to 199.9 Hz ±0.1 Hz 200 Hz to 450 Hz ±1 Hz
Fault (Touch) Voltage
Displayed Range	0 V to 50 V
Error	+5%/+15% ±0.5 V
Programmable RCD Step Increments	10 mA to 50 mA - 1 mA steps 50 mA to 500 mA - 5 mA steps 500 mA to 1000 mA - 10 mA steps
Test Result Storage (RCDT330 Only)
Job Number	256 locations
Distribution Board Number	99 locations
Circuits	99 locations
Phases	P1, P2, P3
Other	Last recorded result may be recalled to the display. All data can be downloaded to a PC using Download Manager (supplied) or Megger Powersuite Professional Windows software
Temperature and Humidity
Operating Range	-5°C to +40°C
Operating Humidity	3% R.H. at +40°C max.
Storage Range	-25°C to +70°C
Maximum Altitude	2000m
Environmental Protection	IP54
Safety
Requirements	Meets the requirements of IEC61010-1 Cat III 300 V phase to earth.
IEC61557	Complies with the following parts of EN61557, Electrical safety in low voltage systems up to 1000 V ac and 1500 V dc- Equipment for testing, measuring or monitoring of protective measures: Part1-General Requirements Part4-Residual current devices
Power Supply
Batteries	8 x 1,5 V cells IEC LR6 type (AA alkaline).
Rechargeable	8 x 1.2 V NiCd or NiMH cells.
Battery Life	2000 consecutive tests
Weight and Dimensions
Weight	All units 980 gms
Dimensions	All units 203 x 148 x 78 mm
E.M.C	In accordance with IEC61326-1

SKU	MEGRCD2
Manufacturer Part Code	RCDT320-EN-BS
Model Ref	RCDT320
Country of Origin	United Kingdom