Megger S1-568 5 kV DC Insulation Resistance Tester

Megger S1-568 Insulation Resistance Tester
Megger’s new S1-Series of insulation resistance testers consist of a 5 kV, 10 kV and 15 kV models called S1-568, S1-1068 and S1-1568. These top end instruments are targeted at power utilities and service companies  working  in  generation,  transmission  and  distribution  markets.  Class  leading  charge  current,  noise  rejection  and  software  filters  make  the  S1-Series  Megger’s  most  advanced  DC  insulation  resistance testers to date.

Instrument  productivity  is  a  focus  of  the  new  S1-Series  which  offers  rapid  charge  batteries  and  operation  from  an  AC  source  when  the  battery  is  flat.  An  intuitive  user  interface  ensures  no  lost  time  remembering  how  to  use  the  tester.  Simplicity  of  operation  is  achieved with two rotary switches and a large backlight display which enables multiple results to be displayed simultaneously. A graphical quick start guide is provided inside the lid of each model to assist first time users.

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.

he  S1-Series  have  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 on-board Bluetooth® interface is used for safe transfer of  data  to  Megger’s  asset  management  software;  PowerDB  Pro,  Advanced or Lite packages.

Test  leads  are  double  insulated  with  clamps  rated  at  3  kV  tequivalent to 6 kV single insulation for the medium clip leadset and  5 kV t equivalent to 10 kV single insulation for the large clip. The 15 kV leadset is insulated to 15 kV.

APPLICATION
The Insulation Resistance (IR) test is a quantitative test which indicates the  effectiveness  of  a  product’s  electrical  insulation.  Applications  include cables, transformers, motors/generators, circuit breakers and bushings. Common insulation tests are the “spot test”, a 1 minute IR test and a 10 minute Polarisation Index (PI) test, where PI is the ratio R10min / R1min and is temperature independent.

Features and benefits

• 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 s, 30 s, 100 s, 200 s
• Li-ion battery – charges in 2 hours and gives up to 6 hours continuous testing a 100 MΩ load (S1-568), battery meets IEC 62133
• 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
• PowerDB Lite asset management compatabilty
• Option to record temperature and/or relative humidity with saved results (measured independently)

Specifications:

AC voltage (auto ranging)
S1-568	90 - 264 V rms,50/60 Hz, 100 A
Battery life	11.1 V, 5.2Ah meets IEC 62133:2003 (S1-1568 has 2 batteries)
S1-568	6 hours (typical) continuous testing at 5 kV with a 100 MΩ load
30 min quick charge	1 hour operation at 5 kV with a 100 MΩ load
Battery charge time	.5 hours deep discharge,2 hours normal discharge
Test voltage	50 V, 500 V, 1000 V, 2500 V, 5000 V
Lock test voltage	0 V to 1 kV in 10 V steps,1 kV to 5 kV in 25 V steps,5 kV to 15 kV in 25 V steps
Test voltage accuracy	+4%, -0%, ±10 V nominal test voltage at 1 GΩ load (0°C to 30°C)
Resistance range	10 k to 15 TΩ @ 5 kV, 10 k to 35 TΩ @ 10 kV, 10 k to 35 TΩ @ 15 kV
Accuracy	10 kV  5000 V  2500 V  1000 V  500 V ±5% to  1 TΩ  500 GΩ  200 GΩ  100 GΩ  50 GΩ ±20% to  10 TΩ  5 TΩ  2 TΩ  1 TΩ  500 GΩ
Guard terminal performance	Guards out parallel leakage resistance down to 250 kΩ with a maximum additional resistance error of 1% with a 100 MΩ load
Display range analogue	100 kΩ to 10 TΩ
Display range digital:	10 kΩ to 35 TΩ
Short circuit/charge current	6 mA
Insulation test Alarm	100 kΩ to 10 GΩ
Capacitor charge	(on battery): < 2.5 s/μF to 5 kV <5 s/μF to 10 kV < 6.3 s/μF to 15 kV (with AC): < 1.5 s/μF to 5 kV , <2.7 s/μF to 10 kV, < 4 s/μF to 15 kV
Capacitor discharge	5 kV to 50 V :< 120 ms/μF 10 kV to 50 V:< 250 ms/μF 15 kV to 50 V:< 3500 ms/μF
Capacitance range With test voltage set above 500V	10 nF to 25 μF
Capacitance measurement accuracy	10 nF to 10 μF : ±10% ±5 nF
Current range	0.01 nA to 6 mA
Interference	8 mA from 1200 V to 2500 V
Software 4 filter settings	10 s, 30 s, 100 s, 200 s
Voltmeter range	30 V to 660 V ac or dc, 45Hz – 65Hz
Voltmeter accuracy	±3%, ±3V
Timer range	Up to 99 minutes 59 seconds,15 second minimum setting
Memory capacity	11 hrs logging @ 5 sec intervals
Test modes	IR, IR(t), DAR, PI, SV, DD, ramp test
Interface	USB type B (device), Bluetooth® Class 2
Real time output	(V, I, R) readings at a rate of 1 Hz
Remote control	Remote control via USB cable only(requires RC dongle to be in position)
ENVIRONMENTAL
Maximum altitude	3000 m
Operating temperature range	-20 °C to 50 °C
Storage temperature range	-25 °C to 65 °C
Humidity	90% RH non-condensing at 40 °C
IP rating	IP65 (lid closed), IP40 (lid open)
Safety	Meets the requirements of IEC 61010-1,CATIV 600 V to 3000 m (5 kV, 10 kV)CATIV 1000 V to 4000 m (15 kV)
EMC	Meets the requirements of IEC61326-1
Dimensions	285 mm x 181 mm x 315 mm
Weight	4,5 kg

For full Megger S1-568 Insulation Tester product specifications, please click here: Megger S1-568

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