Netech LKG 601 User manual

LKG 601
Netech Corporation
110 Toledo St, Farmingdale, NY 11735,
http://www.NetechCorp.us
http://www.PressureMeter.com
LKG 601
ELECTRICAL SAFETY ANALYZER
INSTRUCTION MANUAL

User Manual LKG 601
2
Contents......................................................................
Warranty............................................................................................................... 3
Notices (Patents / Copy Right, Trademarks) ....................................................... 4
Quality Assurance ................................................................................................ 4
Calibration ............................................................................................................ 4
Safety Considerations ......................................................................................... .4
Returns & Credits ................................................................................................. 5
Repair and Recalibration ...................................................................................... 5
Models and Part Numbers................................................................................... 6
General Overview .......................................................
Introduction........................................................................................................... 8
Key Features....................................................................................................... .8
Specifications ....................................................................................................... 9
Instrument Familiarity ......................................................................................... 10
Controls & Indicators .......................................................................................... 11
Preparation for use ............................................................................................. 12
Operating Instructions ........................................................................................ 13
Performance check............................................................................................. 14
Theory of Operation............................................................................................ 15
Maintenance and Storage
Maintenance....................................................................................................... 16
Calibration / Service ........................................................................................... 16
Returning the LKG 601 for Calibration................................................................ 17

LKG 601
Netech Corporation
110 Toledo St, Farmingdale, NY 11735,
http://www.NetechCorp.us
http://www.PressureMeter.com
Contents
Warranty
Netech warrants the LKG 601 against defects in materials and workmanship for one
year from the date of original purchase. The standard warranty is extended for a second
year if the instrument is returned to Netech for its recommended yearly recalibration.
During the warranty period, we will repair or, at our option, replace at no charge a
product that proves to be defective, provided you return the product shipping prepaid to
Netech Corporation. Only serialized products are covered under this warranty.
This warranty does not apply if the product has been damaged by accident or misuse or
as the result of service or modification by other than Netech Corporation, or if its serial
number is defaced or removed.
Netech reserves the right to discontinue the LKG 601 at any time, and change its
specifications, price, or design without notice and without incurring any obligation.
Netech guarantees availability of service parts for 5 years after the manufacture of the
unit is discontinued.
The warranty is void if you elect to have the unit serviced and / or calibrated by
someone other than Netech Corporation.
The warranty covering your product becomes void when the tamper-resistant Quality
Seal is removed or broken without proper factory authorization.
We strongly recommend, therefore, that you send your instrument to Netech
Corporation for factory service and calibration, especially during the original warranty
period.
The purchaser assumes all liability for any damages or bodily injury, which may result
from the use or misuse of the unit by the purchaser, his employees, agents, or
customers.
In no event shall Netech Corporation be liable for consequential damages
Warranty Registration
Please register to receive special offers, free software updates, and more. Plus,
you'll qualify for exclusive complimentary benefits that vary by region. Any failure to
complete and submit this registration will not diminish your rights found in the
limited warranty that accompanied your product at purchase.

User Manual LKG 601
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Notices
Patents / Copyright
Copyright © 2012 by Netech Corporation. All rights reserved. No part of this publication
may be reproduced or transmitted in any form other than for the purchaser’s personal
use without written permission from Netech Corporation.
Trademarks
LKG 601 is trademarks of Netech Corporation. Any other trademark names used in this
manual are only for editorial purposes and the benefit of the respective trademark
owner with no intention of improperly using that trademark.
Quality Assurance
Netech is ISO 9001-2015 Certified. This instrument was thoroughly tested and
inspected according to Netech’s ISO 9001-2015 quality standards and test procedures
are found to meet those specifications when it was shipped from the factory.
Calibration
LKG 601 is calibrated using standards traceable to National Institute of Standards and
Technology (NIST) and the unit is shipped with a calibration certificate.
Safety Considerations
This manual contains operating and safety instructions for the safe operation and to
maintain the equipment in a safe condition. The safety instructions are either warnings
or cautions to protect the user and the equipment from injury or damage. Do not use
this equipment for any other purpose than stated.
Safety Symbols
WARNING
The “WARNING”sign denotes a hazard. It calls attention to a procedure, practice or
the like, which, if not correctly performed or adhered to, could result in personal injury.
Do not proceed beyond a “WARNING”sign until the indicated conditions are fully
understood and met.

LKG 601
Netech Corporation
110 Toledo St, Farmingdale, NY 11735,
http://www.NetechCorp.us
http://www.PressureMeter.com
CAUTION
The “CAUTION”sign denotes a hazard. It calls attention to a procedure, practice or
the like, which, if not correctly performed or adhered to, could result in damage to or
destruction of part or the entire instrument. Do not precede beyond a “CAUTION”
sign until the indicated conditions are fully understood and met.
The symbol to the left is the operator’s manual symbol. When you see this
symbol on the instrument, refer to the operator’s manual.
Returns and Credits
Please note that only serialized products and their accessory items (i.e., products and
items bearing a distinct serial number tag) are eligible for partial refund and/or credit.
Non-serialized parts and accessory items (e.g., cables, carrying cases, auxiliary
modules, etc.) are not eligible for return or refund. Only products returned within 60 days
from the date of original purchase are eligible for refund/credit.
In order to receive a partial refund/credit of a product purchase price on a serialized
product, the product must not have been damaged by the customer or by the carrier
chosen by the customer to return the goods, and the product must be returned complete
(meaning with all manuals, cables, accessories, etc.) and in “as new” and resalable
condition.
Products not returned within 60 days of purchase, or products, which are not in “as
new”, and resalable condition, are not eligible for credit return and will be returned to the
customer. The Return Procedure (see below) must be followed to assure prompt refund
/ credit.
Restocking Charges
Products returned within 30 days of original purchase are subject to a minimum
restocking fee of 15 %. Products returned in excess of 30 days after purchase, but prior
to 60 days, are subject to a minimum restocking fee of 20 %. Additional charges for
damage and / or missing parts and accessories will be applied to all returns.
!

User Manual LKG 601
6
Return Procedure
All items being returned (including all warranty-claim shipments) must be sent freight-
prepaid to our factory location. When you return an instrument to Netech Corporation,
we recommend using United Parcel Service, Federal Express, DHL or Air Parcel Post.
We also recommend that you insure your shipment for its actual replacement cost.
Netech Corporation will not be responsible for lost shipments or instruments that are
received in damaged condition due to improper packaging or handling. Use the original
carton and packaging material for shipment.
Returns for Refund / Credit
A Return Material Authorization (RMA) number must be obtained from our service or
customer service dept, before a product is returned for refund or credit. The RMA
number should be clearly marked on the package along with a statement indicating the
reason for return.
Repair and Calibration
Products returned for repair or recalibration must obtain a RMA (Return Material
Authorization) from our service department after completing a service request form our
website http://netechcorp.us/RmaRequests/index or contact:
Netech Corporation
Service Dept.
110 Toledo Street
New York, 11735
Email: [e-mail]

LKG 601
Netech Corporation
110 Toledo St, Farmingdale, NY 11735,
http://www.NetechCorp.us
http://www.PressureMeter.com
Models and Part Numbers
Part Number Description
510-110 Electrical Safety Analyzer (110 V) with Hard case
510-220 Electrical Safety Analyzer (220 V) with Hard case
510-110-220 Electrical Safety Analyzer 110 V and 220V
Operation with Hard Case
Standard Accessories
Item Description Picture
503 Test Lead For Electrical Safety
Analyzer
535-CASE Hard Carrying Case
30250 Universal Plug Adapter NEMA 5 –
15P (Included with 510-110-220 unit)
30255 Universal Plug Adapter NEMA 6 –
15P (Included with 510-110-220 unit)

User Manual LKG 601
8
General Overview
Introduction
The LKG 601 is a compact, low cost Electrical Safety Analyzer designed to evaluate the
basic electrical safety of all electrical systems including medical devices and
physiological instrumentation.
The LKG 601 measures Electrical Leakage Current, Power Cord Ground Resistance,
and Device Current.
The LKG 601 is simple to operate. A three- position switch selects the test to be
performed. The user may select either the AAMI ESI-1993 or the IEC 601-1 test load to
compensate for high frequency components in the measurement.
Accurate resistance measurements are made via a simple method using a single
conductor cable. No special cables are required. A calibrated output is provided through
a test jack to verify the performance of the LKG 601.
Key Features
Compact
Easy to Use
Measures:
Device Current
Cord (Ground) Resistance
Ground Leakage Current
Case (Chassis) Leakage Current
Test Jack for Calibrated Outputs
True RMS Measurement
AAMI or IEC 601 Test Load Selectors

LKG 601
Netech Corporation
110 Toledo St, Farmingdale, NY 11735,
http://www.NetechCorp.us
http://www.PressureMeter.com
Specifications
Display: 3-1/2 Digit LCD Display
LEAKAGE CURRENT: 0-1999 Micro Amps. All Current measurements are
made through the AAMI/ANSI ES1-1985 or IEC 601-1 test load. The meter
readings correspond to the true RMS value of the current.
Accuracy: ± 1% of reading, + 1 LSD: DC to 1 KHz,
± 2.5% of reading + 1 LSD
1 KHz to 100 KHz,
± 5% of reading + 1 LSD
100 KHz to 1 MHz
RESISTANCE: 0 TO 1999 Milli Ohms.
Accuracy: + 1 % of reading + 1 LSD
DEVICE CURRENT: 0 to 19.99 Amps
Accuracy: + 2% Full Scale + 1 LSD
TEST RECEPTACLE: Hospital Grade 110 VAC -15 Amp or 220 VAC 10 Amp.
The rocker polarity switch selects NORMAL, OFF and REVERSE polarity to the
test receptacle, and a momentary Neutral switch will open the neutral line to the test
receptacle.
POWER REQUIREMENTS: 110 VAC 50-60Hz, 15 Amps or 220 VAC, 10 Amps
maximum rated for the test outlet and 0.1 Amp rated for the unit.
PHYSICAL DIMENSIONS: Size: 5.5x 3.25 x 2.5 Inches
Weight: 1 lbs (.45kg)
ENVIRONMENTAL: Operating range: 59 to 950 F (15 to 400 C) Storage
Temperature: 0 to 1220 F (-20 to 600 C) Relative Humidity: 90% (max) at
temperatures

User Manual LKG 601
10
Instrument Familiarity
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LKG 601
Netech Corporation
110 Toledo St, Farmingdale, NY 11735,
http://www.NetechCorp.us
http://www.PressureMeter.com
Controls & Indicators
Item
Name
Description
1
Display
A 3½ Digit LCD indicates the result of the measurement being made
2
LEDs
3 red LEDS indicate the selected test mode.
3 Mode Switch
Three-position slide switch to select the test measurement. A lit red
LED indicates the selection.
4 Ground
Switch
A switch to momentarily open the ground connection to the test
receptacle
5 Polarity
Switch
A three-position switch to select the normal and reverse polarity of
the test receptacle. The center position shuts the power off to the test
receptacle.
6
Neutral
Switch
A switch to momentarily open the neutral line to the test receptacle.
7
Load Selector
Switch
A slide switch on the right side of the instrument to select either the
AAMI or the IEC 601-1 test load.
8
Test
Receptacle
A 20 AMP power receptacle for the Device Under Test
9 Power Cord The power cord supplies power to the analyzer and to the Device
Under Test
10 Case Ground
A red jack is provided for connecting the test lead to the case
(chassis) of the Device Under Test. The Cord Resistance and
Case Leakage are measured using this cable
11 Test Jacks A calibrated output is provided at the test jack for resistance and
current functions. This performs a self-check of the LKG 601
12 Zero
Adjustment
This recessed adjustment allows for the zeroing of the display to
eliminate test cable resistance variations
13 Fuse 15 Ampere fuse is in an accessible fuse holder for 110 Volt
model. The 230 Volt model uses a 10-Ampere fuse

User Manual LKG 601
12
Preparation for Use
The LKG 601 includes a test lead (PN: 503) for measuring Cord Resistance and Case
Leakage. No other cables are required to perform measurements.
There are three models of LKG 601 available. Prior to using the device identify the Part
number and the model purchased.
The following are the part numbers and the operational voltages.
1. PN: 510-110, for 110 Volt devices only.
2. PN: 510-220, for 220 Volt devices only.
3. 510-110-220 dual voltage operation.
Please refer to the ADDENDUM for the preparation, setup and safe operation of the
dual voltage LKG 601.
Before proceeding with any measurement become familiar with the measurements and
the function selector switch.
During the initial setup the last digit of the LCD will change gradually due to the time
constant of the RMS to DC converter. The display will stabilize to zero in a few
seconds.
CAUTION
Make sure that the power requirements of the Device Under Test are within the
power ratings of the LKG 601, 15 amps at 110 volts and 10 amps at 230 volts.
Do not leave the Device Under Test continuously turned on and connected to the
LKG601.
Before testing 220 Volt devices make sure the LKG 601 is plugged to a 220 Volt
out let using the adapter and connect the 220 Volt device to the LKG 601 using
the universal adapter supplied

LKG 601
Netech Corporation
110 Toledo St, Farmingdale, NY 11735,
http://www.NetechCorp.us
http://www.PressureMeter.com
Operating Instructions
Cord Resistance Measurement:
See Figure 2.
•Set the polarity switch to the off (center) position.
•Move the MODE switch to CORD RESISTANCE. Plug the Device Under
Test into the test outlet.
•Using the test lead provided, connect the chassis of the Device Under Test
to the Case Ground jack on the LKG 601.
•The display will indicate the Power Cord Resistance in milliohms.
Hammer pressure levels in excess of 20 PSI will cause damage t
Figure 2
Block Diagram for Cord Resistance measurement and
Case Leakage measurement (external)
Case Ground
Power Cable (DUT)
Device Under
Test

User Manual LKG 601
14
Case Leakage Current Measurements:
Move the Mode switch to CASE LEAKAGE. See Figure 2.
The Earth Leakage (or Ground Leakage) Current is measured through the ground
conductor of the Device Under Test. This is only applicable to devices with a three-
conductor power cord.
The leakage measurement is made internally when the Ground switch is momentarily
opened. The LCD will display the measurement in Micro Amps. There is no other
connection required.
To measure the Case Leakage of devices with plastic enclosures, wrap aluminum foil
around the case and connect the test lead to the foil.
The Case Leakage Current is measured through the test lead cable. Connect the test
Lead to the case of the DUT (Device under test). The leakage measurement is made
when the Ground switch is momentarily opened. The LCD will display the
measurement in Micro Amps.
Both Earth and Case Leakage Current measurements should be made in all power
switch combinations with the Polarity switch in Normal and Reverse, and the Neutral
switch Open and with the DUT On and Off.
CAUTION
When switching from Normal to Reverse or vice versa, make sure to pause the
rocker switch in the off (middle position). Power to the outlet will be OFF in the
open neutral position.
Device Current Measurements:
Move the Mode switch to DEVICE CURRENT. Set the polarity switch to normal. Turn
the DUT On. The LCD will display the Device Current in Amps.
CAUTION
Do not attempt to open the unit. There are no user serviceable parts inside.
Further, the warranty will be void if the unit is opened by other than Netech
trained personnel.

LKG 601
Netech Corporation
110 Toledo St, Farmingdale, NY 11735,
http://www.NetechCorp.us
http://www.PressureMeter.com
Performance Check
1. Connect the LKG 601 to a live 110 VAC (or 220 VAC for the LKG 601-220)
outlet. Display will turn on and read 0 ± 1 when the Mode switch is in the Case
Leakage position. In the CORD RESISTANCE position the display will show the
numeral one (1) in the left position indicating that the cord circuit is open.
2. Move the Mode selector switch to all three positions and test the LED indication.
3. Check the continuity between receptacle ground and case ground using the test
cable. If necessary adjust the display to zero. When the open ground switch is
pressed down the connection will be open.
4. Connect the Test Lead to the TEST JACK
5. Move the selector switch to CORD RESISTANCE. The reading should be 1010
milliohms + 5%.
6. Move the switch to CASE LEAKAGE. The display will indicate 200 Micro Amps +
2%.
These tests will confirm that the LKG 601 is working properly.

User Manual LKG 601
16
Theory of Operation
The LKG 601 circuitry can be divided into main functional blocks as shown in Figure 3.
Each performs a key role in the operation of the instrument.
Figure 3
Functional block diagram of the LKG 601
Block Diagram Description
Test Load: The input test load is user selectable to AAMI ESI –1993 or to IEC 601.
RMS Converter and Amplifier: The input amplifier buffers the input. The RMS
converter generates a DC voltage equal to the RMS value at its input. The gain
Amplifier sets the gain for the measurements. When the MODE switch selects leakage
current measurement, the AAMI LOAD is connected in front of the INPUT AMPLIFIER,
and the voltage developed across it from the leakage current is measured.
Current Source and Amplifier: Resistance is measured by connecting the
current source to the resistance to be measured and measuring the voltage with the
input amplifier.
Test Receptacle: This supplies power to the unit under test, 110 VAC rated at 15
Amps (220 VAC). The rocker polarity switch selects NORMAL, OFF and REVERSES
polarity in the test receptacle.
Display: All measurements are displayed on a 3-1/2 digit LED display. Over range
is indicated by showing a 1 in the most significant digit
FUNCTION
SELECTOR
AAMI or
IEC 601
RMS TO
DC
CURRENT
SOURCE
LEDS
DISPLAY
AMP
TEST
RECEPTACLE

LKG 601
Netech Corporation
110 Toledo St, Farmingdale, NY 11735,
http://www.NetechCorp.us
http://www.PressureMeter.com
Maintenance and Storage
Maintenance
The LKG 601 requires only minimum maintenance.
Periodically check the inlet plug, outlet receptacle, and wiring for any damage or wear
like cracks, cuts, or other defects. Also check the case for any damage or cracks.
In order to ensure the accuracy, it is recommended that the unit be checked
periodically. A calibrated output is provided at the TEST JACK for Case Leakage and
Cord Resistance functions. This feature is useful to check the integrity of the unit.
When making a resistance measurement with a Test Cable other than the one supplied
with the LKG 601, the user can zero the leads by adjusting the zero adjustment
potentiometer. This will not affect the internal calibration of the unit.
Annual calibration is recommended. If the LKG 601 is returned to Netech for
recalibration before the first year warranty expires Netech will provide a second year
warranty. The warranty is void if the LKG 601 is serviced by anyone other than Netech
or if the warranty seal is broken.
Calibration / Service
The mechanical assembly of LKG 601 contains no parts that can be serviced by the
user. The unit should be returned to Netech Corporation for repair or calibration. The
alignment and adjustment parameters are critical to the robust and efficient
performance of the unit and can be performed only at the factory.
The unit is factory calibrated with NIST traceable standards and recommended to be
calibrated once a year.
Netech maintains a complete repair and recalibration service at a very low cost and fast
turnaround. Estimates for repair and recalibration are available upon request.
LKG 601 contains NO USER SERVICEABLE PARTS and calibration/ service
should be performed only by Netech. Attempt to repair / service the unit outside
Netech voids the warranty.

User Manual LKG 601
18
Returning the LKG 601 for Re-Calibration
Products returned to Netech for repair or recalibration requires a RMA (Return
Authorization Number) for speedy processing of the service required.
To obtain a RMA number follow the link http://www.NetechCorp.us and fill in the required
information, Email [e-mail] or call 800-547-6557 (US & Canada),
International 631-531-0100.
When shipping units to the factory enclose a copy of the RMA and the number should
be on used as the reference in the shipping label.
The shipment should be addressed to:-
Attn: Service Department
Netech Corporation
110 Toledo St.
Farmingdale, New York 11735.

LKG 601
Netech Corporation
110 Toledo St, Farmingdale, NY 11735,
http://www.NetechCorp.us
http://www.PressureMeter.com
Addendum
LKG 601 (PN: 510-110-220) shown with the universal adapter for 220 Volt devices.
CAUTION
LKG 601 dual voltage model (PN: 510-110-220) designed for use in 110 Volt
Ac powered equipments or 220 AC powered equipments.
For 220 volt devices make sure the device is 220 Volt AC and the wall outlet
is 220 Volt.
Plug the 220 Volt adapters to the wall outlet and connect the 220 volt AC
device in to the LKG 601 using the second adapter.

User Manual LKG 601
20
Appendix
This section is intentionally left blank for future use