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Megger S1 Series Insulation Resistance Tester, 15 kV

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$16,355.36
SKU:
S1-1568
Availability:
2 to 3 Weeks
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Megger S1 Series Insulation Resistance Tester, 15 kV

$16,355.36

Availability: 2 to 3 Weeks

Megger S1-1568 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, battery meets IEC 62133
  • CAT IV 600 V safety rating up to 4000 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 – 15 kV(sold separately)

These test leads are supplied as an option on the S11568.

  • These clips are designed for clamping on larger diameter test pieces but where space is a premium.
  • The insulation is designed only to protect the user from the output of 15 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 1000 V AC, r.m.s. in an CAT IV environment.
  • Cable insulation rating: 15 kV DC (marked on cable)
  • Cable type: flexible dual insulated silicon (inner insulation layer coloured white to highlight damage). These test leads may also be supplied in non-standard lengths to suit a particular application.

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 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


Megger S1-1568 Specifications

Specifications

AC Voltage (Auto Ranging)90 to 264 Vrms, 50/60 Hz, 200 A
Test Voltage250 V, 500 V, 1000 V, 2500 V, 5000 V, 10,000 V, 15,000 V, V max
Lock Test Voltage40 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 Accuracy4%, 0%, 10 V nominal voltage at 1 GO load (32 to 86°F, 0 to 30°C)
Resistance Range10 k to 15 TO at 5 kV, 10 k to 35 TO at 10 kV, 10 k to 35 TO at 15 kV
Guard Terminal PerformanceGuards out parallel leakage resistance down to 250 kΩ with a maximum additional resistance error of 1% with a 100 MΩ load
Display RangeAnalogue: 100 kΩ to 10 TΩDigital: 10 kΩ to 35 TΩ
Short Circuit/Charge Current6 mA
Insulation Test Alarm100 kΩ to 10 GΩ
Capacitor Charge (on Battery)On battery: <2.5 μF to 5 kV<5 μF to 10 kV<6.3 μF to 15 kVWith AC: <1.5 μF to 5 kV<2.7 μF to 10 kV<4 μF to 15 kV
Capacitor Discharge<250 ms/μF discharge from 10 kV to 50 V
Capacitance RangeWith test voltage set above 500V: 10 nF to 25 μF
Capacitance Measurement Accuracy10 nF to 10 μF: ±10%; ±5 nF
Current Range0.1 nA to 6 mA
Current Accuracy±5% ±0.2 nA at all voltages (68°F, 20°C)
Interference8 mA from 2560 V to 10 kV
Software 4 Filter Settings10, 30, 100, 200 s
VoltmeterRange: 30 V to 660 V AC or DC, 45 to 65 HzAccuracy: ±3%, ±3V
Timer RangeUp to 99 minutes 59 seconds, 15 second minimum setting
Memory Capacity11 hours logging at 5 sec intervals
Test ModesIR, IR(t), DAR, PI, SV, DD, ramp test
InterfaceUSB type B (device), Bluetooth® Class 2
Maximum Altitude4000 m
Environmental ConditionsOperating temperature: -4 to 122°F (-20 to 50°C)Storage temperature: -13 to 149°F (-25 to 65°C)Humidity: 90% RH non-condensing at 104°F (40°C)
IP RatingIP65 (lid closed), IP40 (lid open)
SafetyMeets the requirements of IEC 61010-1, CATIV 1000 V to 4000 m
EMCMeets the requirements of IEC61326-1
Real Time Output(V, I, R) readings at a rate of 1 Hz
Remote ControlRemote control via USB cable only (requires RC dongle to be in position)
30 Minute Quick Charge1 hour operation at 5 kV with a 100 MO load
Auto Power OffInstrument turns off after a few minutes if non-use to conserve battery life
BatteryCharge time: 2.5 hours deep discharge, 2 hours normal dischargeRating: 11.1 V, 5.2 Ah meets IEC 62133: 2003Lifetime: 4.5 hours (typical) continuous testing at 15 KV with a 100 MO load
Dimensions12 x 7.6 x 14.2" (305 x 194 x 360 mm)
Weight14.3 lbs (6.5 kg)


What's included with the Megger S1-1568
  • Insulation Resistance Tester
  • X-Large Insulated Clips
  • Remote Control Indicator Beacon
  • Screened USB Cable with filters
  • Power Lead
  • Quick Start Guide
Shipping & Return Policy — EquipTestPro
Last Updated: February 1, 2026
Legal Policies

Shipping & Return Policy

Everything you need to know about orders, cancellations, refunds, and delivery.

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Section 01
Shipping Destinations

EquipTestPro ships to both Canada and the United States. We are pleased to serve customers across North America with reliable, trackable delivery options.

Please Note: Certain products are subject to restrictions and cannot be shipped to all destinations. Product-specific shipping availability is noted on each item's detail page. We do not currently ship to international destinations outside of Canada and the United States.
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Section 02
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Flat-rate shipping is calculated to reflect the cost of reliable, insured delivery. The rate shown at checkout is final — no hidden surcharges will be added after your order is placed.

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Section 03
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For certain items, shipping costs are calculated based on the weight of the product. The weight of any weight-based item is listed on its product detail page.

Rounding Policy: To align with the policies of our shipping carriers, all item weights are rounded up to the next full pound when calculating shipping costs.

For example, an item weighing 3.2 lbs will be rated at 4 lbs for shipping calculation purposes. This policy is standard practice across all major carriers we work with.

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Section 04
Product Restrictions

Some products sold on EquipTestPro are subject to shipping restrictions due to regulatory, carrier, or safety requirements. These include but may not be limited to:

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Where restrictions apply, this will be clearly noted on the product listing. If you have questions about a specific product's shipping eligibility to your location, please contact us before placing your order.

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Section 05
Order Processing

Orders are processed on business days (Monday through Friday, excluding statutory holidays). Orders placed after business hours or on weekends will begin processing the following business day.

1
Order Confirmed You receive an email confirmation with your order details.
2
Order Processed Your order is verified and prepared for shipment (1–2 business days).
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Shipped You receive a tracking number by email once your package is dispatched.
4
Delivered Delivery timelines vary by destination and carrier availability.
Section 01
Order Cancellation Rights

You are entitled to cancel your Order within 30 days of receipt without providing a reason, subject to the processing fee structure described below.

The cancellation deadline is 30 days from the date on which you received the Goods, or on which a third party appointed by you (other than the carrier) takes possession of the delivered product.

To exercise your cancellation right, notify us with a clear written statement by:

  • Email: info@equiptestpro.com
  • Online form: equiptestpro.com/contact-us
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Section 02
Cancellation Processing Fees

The following fee structure applies to all cancellations. Please review carefully before requesting a cancellation.

Customer-Initiated
10%

A processing fee of 10% of the total order value will be withheld from your refund to cover payment processing, handling, and administrative costs.

Company-Initiated (Item Unavailable)
$0

If we cancel your order due to item unavailability, no processing fee will be withheld. You receive a full refund of the amount paid.

Refunds will be issued using the same payment method as the original purchase. No additional fees beyond those described above will be applied.

Section 03
Conditions for Returns

To be eligible for a return, all of the following conditions must be met:

  • The Goods were purchased within the last 30 days
  • The Goods are in their original, undamaged packaging
  • The Goods are unused and unaltered from the condition received
  • A valid receipt or proof of purchase accompanies the return
Sale Items: Only regular-priced Goods are eligible for a refund. Items purchased on sale or at a discounted price cannot be refunded. This exclusion may not apply where prohibited by applicable law.

We reserve the right to refuse returns of any merchandise that does not meet the above conditions, at our sole discretion.

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Section 04
Non-Returnable Goods

The following items are not eligible for return under any circumstances:

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Section 05
How to Return Goods

You are responsible for the cost and risk of returning Goods to us. Before sending any items, please contact us at info@equiptestpro.com to obtain the return shipping address.

Important: We strongly recommend using an insured and trackable mail service. We cannot be held responsible for Goods damaged or lost during return shipment, and we are unable to issue a refund without confirmed receipt of the returned Goods or verifiable proof of delivery.
Section 06
Refund Timeline

You should expect to receive your refund within four (4) weeks of delivering your return package to the shipper. In many cases, refunds are processed sooner. The timeline breaks down as follows:

1
Transit to Us 5 to 10 business days for us to receive your return from the shipper.
2
Return Processing 3 to 5 business days to inspect and process your return once received.
3
Bank Processing 5 to 10 business days for your bank to post the refund to your account.

We will process refunds no later than 14 days from the day we receive the returned Goods, using the same payment method as your original purchase.

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Section 07
Gift Returns

If the Goods were marked as a gift at the time of purchase and shipped directly to you, a gift credit equal to the return value (less any applicable processing fee) will be issued. Once the returned product is received and inspected, a gift certificate will be mailed to you.

If the Goods were not marked as a gift at purchase, or if the gift giver had the order shipped to themselves first, the refund will be issued to the original purchaser.

Questions? We're here to help.

Reach out to our support team for assistance with any order or return.

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    All returns must be authorized. Items returned prior to authorization will not be accepted. For international customers where applicable, customers must ship any returns to us freight and duty prepaid. Return freight charges for internationsl shippments will be the responsibility of the customer.

    Defective new equipment may be returned for warrantyrepair/exchange to us within (5) days of the shipment receipt date. After five (5) days, returns will be handled by direct contact and in accordance with the warranty terms of the item's manufacturer. Items that have malfunctioned due to mishandling, electrical overload, etc., will be subject to repair charge.

    Non defective new equipment will be authorized for return within five (5) days of the shipment receipt date if the equipment is still in new, re-sellable condition with the original manual(s), accessories, packing material and carton. We reserve the right to reject returnsin which there is no original packaging, missing accessories, damage or visible signs of usage of the item. A restocking fee of up to 25% of purchase price may apply. Special orders and dangerous goods are non-returnable.

    (Do not write anytingon the manufacturer's original package or use as a shipping carton. Include all accessories, manuals and warranties.)

    Please, include a copy of the packing list or invoice with a reason for the return. Your return authorization number is valid for thirty (30) days.

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