Megger S1-1068 Offers

Safety of operation is built in, 5 kV and 10 kV models are safety rated to CAT IV 600 V up to 3000 m, and the 15 kV S1-1568 is rated at CAT IV 1000 V up to 4000 m. Original equipment manufacturers and repairers will welcome the remote control feature allowing them to automate resistance testing on the factory floor, as will technicians in substations wanting to operate from a more convenient, safe distance. The S1-Series has a dual case design with a tough outer case to protect the tester from knocks and drops and a fire-retardant inner case. The case IP rating prevents moisture and dust ingress when storing or carrying the instrument.

The lids have clip-on lead pouches ensuring that leads remain with the instrument at all times. Case lids are removable for improved access to the terminals. Five preset voltage ranges are provided in insulation test mode, plus a user-settable lock voltage range. Preconfigured diagnostic tests include Polarisation Index (PI), Dielectric Absorption Ratio (DAR), Dielectric Discharge (DD), Stepped Voltage (SV), and Ramp test. Advanced memory storage includes time/date stamping of results, logging of data, and recall of results to screen. A fully isolated USB interface or onboard Bluetooth® interface is used for the safe transfer of data to Megger’s asset management software; PowerDB Pro, Advanced, or Lite packages.

Features

• PI predictor (PIp) function
• Resistance measurement: 15 TΩ – 5 kV, 35 TΩ – 10 kV, 35 TΩ – 15 kV
• High current – 6 mA short circuit current
• High noise immunity – 8 mA of noise rejection
• Four software filters: 10, 30, 100, 200 s
• Li-ion battery – charges in 2 hours and gives up to 4.5 hours continuous testing a 100 MΩ load (S1-568), battery meets IEC 62133
• CAT IV 600 V safety rating up to 3000 m
• Remote operation via USB cable
• Download of memory via isolated USB cable Bluetooth®
• IR, timed IR, DAR, PI, DD, SV and ramp diagnostic tests
• Large LCD display with backlight
• Dedicated voltmeter function (30 V to 660 V) AC or DC
• Advanced memory, on screen recall and real time clock for date/time stamped results
• CertSuite™ Asset management compatability
• Option to record temperature and/or relative humidity with saved results (measured independently)

PI Prediction Function (PIp)

The Polarisation Index test can be time consuming, with a 10 minute test (30 minutes on 3 phase) and with multiple items to test, any time saved is a bonus. PIp does just that. The PI predictor function uses the first part of the IR curve to predict the rest at 5 minutes into the test. The PIp can start as early as 3 minutes into the test and will stop when it is confident in the prediction.

Test leads supplied

The S1568, S11068 and the S11568 are all supplied with test leads that are compliant with the requirements of IEC61010-031:2008.

• The 5 kV models are supplied with one 3 m lead-set with medium sized clips.
• The 10 kV models are supplied with two 3 m lead-sets, one with medium sized clips and the other with large clips with insulation suited to 10 kV use.
• The 15 kV models supplied with a 3 m lead-set, with large clips with insulation suited to 15 kV use.

These leads are designed based on Megger's extensive knowledge of insulation testing using the latest technology. The leads are in compliance with IEC61010-31:2008, which requires a fully insulated clip design.

Medium insulated test clip 3 M x 3 leadset – 5 kV and 10 kV

These test leads are supplied as standard on S1568 and the S11068.

• These clips are designed for clamping on larger diameter test pieces but where space is at a premium.
• The insulation is designed only to protect the user from the output of Megger 5 kV and 10 kV (set below 6 kV) insulation resistance testers. The clips cannot in any circumstance be relied on to protect the user from live AC systems above 600 V AC, r.m.s. in an CAT IV environment.
• Cable insulation rating: 12 kV DC (marked on cable)
• Cable type: Flexible dual insulated silicon (inner insulation layer coloured white to highlight damage)

Large insulated test clip 3 M X 3 leadset

These test leads are supplied as standard on S11068 and S11568 models (different leadset dependant on model). These clips are designed for clamping on to larger diameter test pieces.

• The insulation is designed only to protect the user from the output of Megger 5 kV, 10 kV and 15 kV insulation resistance testers.
• The clips cannot in any circumstance be relied on to protect the user from live AC systems above 600 V AC, rms in an CAT IV environment.

10 kV lead set Cable

• Insulation rating: 12 kV DC (marked on cable)
• Cable type: flexible dual insulated silicon (inner insulation layer coloured white to highlight damage)

15 kV lead set Cable

• Insulation rating: 18 kV DC (marked on cable)
• Cable type: Flexible dual insulated silicon (inner insulation layer coloured white to highlight damage). The design of the lead set is intended to facilitate connection to a variety of de-energized systems for the purpose of making insulation resistance measurements. In all cases it is the responsibility of the user to employ safe working practices and verify that the system is safe before connection. Even isolated systems may exhibit significant capacitance, which will become highly charged during the application of the insulation test. This charge can be lethal and connections, including the leads and clips, should never be touched during the test. The system must be safely discharged before touching connections.

Designed for everyday use

Test leads are a key component of any precision instrument and safety, long life, and the ability to provide reliable connections to a variety of test pieces found in everyday applications are of the utmost importance. Megger design test leads for both safety and practical operation.

Locking HV insulated plugs/non-removable test clips

All Megger 5 kV, 10 kV and 15 kV insulation testing test leads are fitted with unique locking HV plugs and non-removable test clips.

• This reduces the likelihood of a plug or clip inadvertently losing electrical connection and the capacitance of a long cable remaining lethally charged.
• With the arrows on the plug finger guard horizontal on the instrument as shown to lock. Twist 90° to unlock.
• In addition, for the same reason, the test clips are not removable from the test lead.

Practical insulation design

Moving jaw fingers maintain the clips touch-proof safety when the slip is closed, but flex back to allow the metal teeth of the clip to contact test piece unimpeded when in use.

Applications

• Cables
• Transformers
• Motors and generators
• Circuit breakers
• Bushings