Megger STVI User manual

0 PN: 81127
Rev 4, 6/2017
User Manual
STVI
Smart Touch View Interface
SPI225
Smart Primary Injection Test System

1 PN: 81127
Rev 4, 6/2017
Revision History
Revision
ECN #
Date
1
32660
11/26/2014
2
32893
9/27/2015
3
32994
2/19/2016
4
33376
6/26/2017

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License Notice
This manual, as well as the hardware and software described in it, is furnished under license and may be
used or copied only in accordance with the terms of such license. The content of this manual is furnished
for informational use only, is subject to change without notice. Megger assumes no responsibility or
liability for any errors or inaccuracies that may appear in this manual.
The information and data in this User Manual are proprietary. The equipment described herein may be
protected by U.S. patents. Megger specifically reserves all rights to such proprietary information as well
as rights under any patent, none of which is waived by the submission of this user manual.
Except as permitted by such license, no part of this publication may be reproduced, stored in a retrieval
system, or transmitted, in any form or by any means, electronic, mechanical, recording, or otherwise,
without the prior written permission of Megger.
Megger, the Megger logo are trademarks of Megger. All other trademarks are the property of their
respective owners.
Notice to U.S. government end users. The hardware, software and documentation are “commercial
items”, as that term is defined at 48 C.F.R. §2.101, consisting of “commercial computer software” and
“commercial computer software documentation,” as such terms are used in 48 C.F.R. §12.212 or 48
C.F.R. §227.7202, as applicable. Consistent with 48 C.F.R. §12.212 or 48 C.F.R. §§227.7202-1 through
227.7202-4, as applicable, the commercial computer software and commercial computer software
documentation are being licensed to U.S. government end users (1) only as commercial items and (2)
with only those rights as are granted to all other end users pursuant to the terms and conditions set forth
in the Megger standard commercial agreement for this software and hardware. Unpublished rights
reserved under the copyright laws of the United States. The recipient, if a Government agency,
acknowledges that this manual and the equipment described were procured with "Limited Rights" to
technical data as described in ASPR 9-203 (b).
The STVI includes an RTOS-resident computer program. This program belongs to Megger and contains
trade secret ideas and information of Megger.
WEEE Waste Electrical and Electronic Equipment - The crossed out wheeled waste bin placed on
Megger products is a reminder not to dispose of the product at the end of its life with general
waste. Please utilize your local WEEE collection facilities, or observe all applicable local
requirements.
Megger is registered in the UK as a Producer of Electrical and Electronic Equipment. The Registration No
is WEE/DJ2235XR.
Written and designed at Megger, 4271 Bronze Way, Dallas, Texas 75237.
__________________________
Printed in the USA.
2017 Megger, all rights reserved.

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SAFETY PRECAUTIONS
WARNING:
VOLTAGES GENERATED BY THIS INSTRUMENT CAN BE
HAZARDOUS
This instrument has been designed for operator safety; however, no design can completely protect
against incorrect use. Electrical circuits are dangerous and can be lethal when lack of caution and
poor safety practices are used. There are several standard safety precautions that should be
taken by the operator. Where applicable, IEC safety markings have been placed on the
instrument to notify the operator to refer to the user manual for instructions on correct use or
safety related topics. Refer to the following table of symbols and definitions.
Symbol
Description
Direct Current
Alternating Current
Both direct and alternating current
Earth (ground) Terminal. There is a common chassis ground terminal
located on the front panel (see Front panel under Description of Controls).
Protective Conductor Terminal
Frame or Chassis Terminal
On (Supply)
Off (Supply)
Caution, risk of electric shock
Caution (refer to accompanying documents)
WARNING: Under no circumstances should the operator or technician attempt to open or
service any Megger instrument while connected to a power source. Lethal voltages are present
and may cause serious injury or death!

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SAFETY PRECAUTIONS (Continued)
The following are specific safety related items associated with the test system.
Read and understand all safety precautions and operation instructions before attempting
to use this unit.
The purpose of this equipment is limited to use as described in this instruction manual.
Should a situation arise that is not covered in the general or specific safety precaution
please contact Megger regional representative or Megger, Dallas, Texas.
Safety is the responsibility of the user. Misuse of this equipment can be extremely
dangerous.
Always start with the power OFF, before connecting the power cord. Make
sure outputs are off before attempting to make test connections.
Never connect the test set to energized equipment.
Always use properly insulated test leads. The optional test leads are rated for
the continuous output ratings of the test system, and should be properly used
and cared for. DO NOT use cracked or broken test leads.
Always turn the test system off before disconnecting the power cord.
DO NOT attempt to use the unit without a safety ground connected.
DO NOT attempt to use the unit if the power cord ground prong is broken or
missing.
DO NOT use the test set in an explosive or flammable atmosphere.
DO NOT use the test set in a wet environment.
The instrument must only be used by suitably trained and competent persons.
Observe all safety warnings marked on the equipment.
Safety related or other important topics, like the statement below, will be
notated with the adjoined symbol. Read the topic carefully as it may relate
either to the safe operation of the test system or the safety of the operator.
The Model SPI is not designed for use on energized circuits. For the safety of the
operator and protection of the instrument, do not connect it to circuits that are
energized. This includes circuits that could become energized during the
course of a test procedure utilizing this instrument.

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Table of Contents
Section Page
STVI ..............................................................................................................................................................0
Smart Touch View Interface.......................................................................................................................0
SPI225...........................................................................................................................................................0
Smart Primary Injection Test System .......................................................................................................0
Revision History..........................................................................................................................................1
Safety Precautions......................................................................................................................................3
1.0 STVI Introduction .............................................................................................................................8
1.1 Smart Touch View Interface...............................................................................................................8
1.2 Terminology......................................................................................................................................9
1.2.1 Glossary of Terms for Circuit Breaker Testing ...............................................................................9
1.2.2.1 Pickup (Tap / Sensitivity Rating).................................................................................................9
1.2.2.2 Time Delay..................................................................................................................................9
1.2.2.2.1 Long-Time Delay.........................................................................................................................9
1.2.2.2.2 Short-Time Delay........................................................................................................................9
1.2.2.3 Instantaneous..............................................................................................................................9
1.2.2.4 Test Multiple..............................................................................................................................10
1.2.2.5 Frame Size................................................................................................................................10
1.2.2.6 Continuous Current Rating .......................................................................................................10
1.2.2.7 Expected Trip Time...................................................................................................................10
1.2.2.8 Interrupting Rating ....................................................................................................................10
1.3 Power Over Ethernet Input Power................................................................................................10
2.0 SETUP .............................................................................................................................................10
2.1 Unpack System................................................................................................................................10
2.1.1 Initial Start Up ...............................................................................................................................10
2.2 Communication Ports....................................................................................................................10
2.2.1 Ethernet Port.................................................................................................................................11
2.2.2 USB 2.0 Interface .........................................................................................................................11
2.3 Smart Touch View Interface..........................................................................................................12
2.3.1 Configuration ................................................................................................................................14
2.3.1.1 Max Time ..................................................................................................................................15
2.3.1.2 Max Current ..............................................................................................................................15
2.3.1.3 Tap Verification Current............................................................................................................15
2.3.1.4 Timer Stop Cfg..........................................................................................................................15
2.3.1.4.1 Current Actuate Mode...............................................................................................................16
2.3.1.4.2 Normally Closed Contact Opening............................................................................................16
2.3.1.4.3 Normally Open Contact Closing................................................................................................16
2.3.1.4.4 Voltage Applied.........................................................................................................................16
2.3.1.4.5 Voltage Removed......................................................................................................................16
2.3.1.4.6 Post Deb (Debounce) ...............................................................................................................16
2.3.1.4.7 Post Volt Thres. (Voltage Threshold)........................................................................................16
2.3.1.5 Help Button ...............................................................................................................................17
2.3.1.6 Default Settings Options ...........................................................................................................17
2.3.1.6.1 Save as Default.........................................................................................................................17
2.3.1.6.2 Restore Default.........................................................................................................................17
2.3.1.6.3 Restore Factory.........................................................................................................................17
2.3.1.7 Versions (Information Screen)..................................................................................................17
2.3.1.8 Update Firmware.......................................................................................................................17
2.3.1.9 Current Status...........................................................................................................................17
2.3.1.10 Time Unit...................................................................................................................................17
2.3.1.11 Bluetooth Pwd...........................................................................................................................18
2.3.1.12 Line Freq...................................................................................................................................18

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2.3.1.13 Ld (Load) Connection ...............................................................................................................18
2.3.1.14 Color Options............................................................................................................................18
2.3.1.15 Pickup Ramp Rate....................................................................................................................18
2.3.1.16 Pulse On Duration.....................................................................................................................18
2.3.1.17 Pulse Off Duration.....................................................................................................................18
2.3.1.18 Ethernet (DHCP) IP Address....................................................................................................18
2.3.1.19 Set Date and Time....................................................................................................................19
2.3.1.20 Number Format.........................................................................................................................19
2.3.1.21 Adjust Screen Brightness..........................................................................................................19
2.3.1.22 Logging .....................................................................................................................................19
2.3.1.23 Screen Exit................................................................................................................................19
2.4 Setting Output Currents ................................................................................................................20
2.4.1 Numeric Keypad Entry..................................................................................................................20
2.4.2 Manual Ramping...........................................................................................................................20
2.4.3 Control Knob.................................................................................................................................21
2.4.4 Virtual Alphanumeric Keypad .......................................................................................................21
2.5 STVI - File Management.................................................................................................................22
3.0 STVI –Basic Operating Descriptions...........................................................................................24
3.1 STVI / PC Manual Test Screen ......................................................................................................24
3.1.1 Home button .................................................................................................................................24
3.1.2 Configuration button .....................................................................................................................24
3.1.3 Add To Report button ...................................................................................................................25
3.1.4 Clear Results button.....................................................................................................................25
3.1.5 Nameplate Data button.................................................................................................................25
3.1.6 System Reset button ....................................................................................................................25
3.1.7 System Reset button ....................................................................................................................25
3.1.8 System Reset button ....................................................................................................................25
3.1.9 System Reset button ....................................................................................................................25
3.1.10 Requested Current (A) Amplitude Button.....................................................................................25
3.1.11 Mode button..................................................................................................................................25
3.1.11.1 Momentary Mode......................................................................................................................26
3.1.11.2 Continuous Mode......................................................................................................................26
3.1.12 Mode button..................................................................................................................................26
3.1.13 Play button....................................................................................................................................26
3.1.14 Timer Display Window ..............................................................................................................28
3.1.15 Output Current Amplitude Window ...........................................................................................28
3.2 Selection of SPI225 Output Terminals .........................................................................................28
3.2.1 Selection of Output Leads ............................................................................................................28
3.3 SPI225 Output Current and Overload Capability ........................................................................30
3.3.1 Parallel Operation.........................................................................................................................31
3.3.1.1 Two SPI Units in Parallel ..........................................................................................................31
3.3.1.2 Three or Four SPI Units in Parallel...........................................................................................32
3.3.2 Series Operation...........................................................................................................................33
3.4 Manual Test.....................................................................................................................................35
3.4.1 Timing Test...................................................................................................................................35
3.4.2 Testing Instantaneous Pickup ......................................................................................................37
3.5 Advanced Pickup and Timing Test...............................................................................................39
3.5.1 Advanced Timing Test Setup .......................................................................................................39
3.5.1.1 Breaker Manufacturer and Curve Selection..............................................................................40
3.5.2 Advanced Pickup and Timing Test Screen ..................................................................................41
3.5.2.1 PC or STVI to SPI connection button .......................................................................................41
3.5.2.2 Configuration button..................................................................................................................41
3.5.2.3 View Report button ...................................................................................................................41
3.5.2.4 Clear Results button .................................................................................................................42
3.5.2.5 Nameplate Data button.............................................................................................................42
3.5.2.6 Home button..............................................................................................................................42

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3.5.2.7 System Reset button.................................................................................................................42
3.5.2.8 File Folder button......................................................................................................................42
3.5.2.9 Long Time Delay Test Selection button....................................................................................42
3.5.2.10 Short Time Delay Test Selection button ...................................................................................42
3.5.2.11 Instantaneous Test Selection button ........................................................................................42
3.5.2.12 Ground Trip Test Selection button............................................................................................42
3.5.2.13 Time Curve Test Display...........................................................................................................42
3.5.2.14 Select Breaker Curve button.....................................................................................................43
3.5.2.15 Frame Size, Sensitivity Rating, Band and Pickup windows......................................................43
3.5.2.16 Pickup and Timing Test Selection windows..............................................................................43
3.5.2.16.1 Automated Pickup Tests .......................................................................................................43
3.5.2.16.2 Automated Timing Tests .......................................................................................................43
3.5.2.17 Help button................................................................................................................................43
3.5.3 Advanced Automated (Manufacturer Specific) Timing Test.........................................................44
3.5.4 Advanced Manual (Generic) Timing Test.....................................................................................46
4.0 Warranty Statement .......................................................................................................................48
5.0 Service Data....................................................................................................................................48
5.1 Preventive Maintenance ................................................................................................................48
5.1.1 Examine the Unit ..........................................................................................................................48
5.1.2 Upgrading STVI Software.............................................................................................................48
5.2 Updating SPI225 Firmware............................................................................................................49
5.3 Service and Repair Instructions ...................................................................................................50
5.3.1 Basic Troubleshooting..................................................................................................................50
5.3.1.1 Power Input...............................................................................................................................50
5.3.1.2 Ethernet Cable..........................................................................................................................51
6.0 Preparation for Reshipment..........................................................................................................51

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1.0 STVI Introduction
The STVI is a user friendly interface to control the Megger SPI test equipment. This manual contains the
information that you will need in order to set up and use your STVI with the SPI Device. How the unit
operates, some of the different types of testing you can do, and how to save and view your test results
with the Smart Touch View Interface software is described. It also covers running the STVI software
using the PowerDB software on your PC.
1.1 Smart Touch View Interface
Figure 1 - Smart Touch View Interface
1. TFT LCD Color Display –this 8.5 inch touch panel display provides high resolution, and features
Wide Viewing Angle Technology with high luminance for reading in direct sunlight.
2. Control Knob –this knob will adjust values once the box location of the value to be changed is
selected.
Figure 2 - STVI Rear-View
3. Built-in Foldout Stand –the STVI may be operated as a handheld controller, or foldout the
built-in stand and use a desktop controller.
4. STVI Ethernet Port –this Ethernet port is a 10/100BaseTX PoE (Power over Ethernet) port, and
is the SPI connection port.

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5. USB Interface –the USB port is used to update the firmware in the SPI as well as update the
software in the STVI using a USB memory stick. It may also be used to download test results
from the STVI for download into another PC with Power DB software for storage or printing. For
control of the SPI, an Ethernet cable is provided. The STVI gets its power over the Ethernet
cable. Even though the STVI has a built-in virtual keyboard, the user can use a USB keyboard
with the STVI, as well as a mouse (including Logitech wireless mouse). The keyboard and/or
mouse are not provided with the accessories.
1.2 Terminology
The acronyms, terms, and definitions used throughout this manual are described below:
1.2.1 Glossary of Terms for Circuit Breaker Testing
The STVI display screens prompt the user to select, or set, various values. The values vary depending
on the protective device under test. Many of the terms used are similar in nature and mean virtually the
same thing regardless of the type of breaker. For example, the term Time Dial is commonly used to
define the time dial setting on the device under test. Unfortunately, some of the terms described here
may apply to different types of devices under test in different ways, and thus may not cover every
possible device made. However, it is hoped that this glossary will help the user to understand every
setting value on every device under test.
1.2.2.1 Pickup (Tap / Sensitivity Rating)
A numerical value associated with a tap or sensitivity rating setting on the device under test. It is used to
define a setting value, pick up value, or minimum operating point, of the device under test.
1.2.2.2 Time Delay
It is a numerical value of time, normally associated with the minimum operating time of the device under
test. Low Voltage Power Circuit Breakers are available with three types of tripping characteristics: Long-
Time, Short-Time, and Instantaneous.
1.2.2.2.1 Long-Time Delay
The long time delay characteristic is normally associated with direct acting low voltage power circuit
breakers providing overload protection with typical time delays of approximately 10 - 60 seconds at 300%
of pickup.
1.2.2.2.2 Short-Time Delay
The short time delay characteristic is normally associated with direct acting low voltage power circuit
breakers providing protection for short circuit or fault conditions. It is used whenever a small delay is
necessary for coordination or selectivity with other protective devices. Typical delays of this type
characteristic are approximately 6-30 cycles.
1.2.2.3 Instantaneous
A numerical value associated with a tap setting of the instantaneous element of the device under test. It
is used to define a pick up value, or minimum operating point, of the instantaneous element of the device
under test. The instantaneous trip characteristic is used for short circuit or fault protection and has no
intentional time delay.

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1.2.2.4 Test Multiple
A numerical value normally associated with timing tests. Multiples are normally expressed in terms of
whole numbers like 2, 3, 4, etc., times the Pickup or Tap value of the device under test. Fractions of test
multiples may also be entered and the appropriate test values and theoretical trip times will be calculated
automatically.
1.2.2.5 Frame Size
The frame rating is the maximum continuous current rating in amperes of all parts except the overcurrent
device. All current-carrying parts, contacts, and pivot points are designed to carry current up to the frame
size rating without exceeding heating limits.
1.2.2.6 Continuous Current Rating
The continuous current rating is a current value equal to or less than the frame rating. This value of
current is printed or stamped on the overcurrent device. It is possible to have a 600-ampere frame rating,
with a continuous current rating of only 100 amperes (due to the size of the overcurrent trip device).
1.2.2.7 Expected Trip Time
A numerical value representing the expected operating time of the device under test.
1.2.2.8 Interrupting Rating
A numerical value associated with the highest current at rated voltage that the device can interrupt
without external damage.
1.3 Power Over Ethernet Input Power
The STVI gets Power Over Ethernet (PoE) of 48 Volts DC at 0.5 A from the SPI STVI port.
2.0 SETUP
2.1 Unpack System
Unpack the unit and check for evidence of any shipping damage. If there is any visual damage,
immediately notify the freight carrier to make a damage claim, and notify Megger of the damage.
2.1.1 Initial Start Up
1. With the Ethernet cable supplied with the unit, connect the STVI Ethernet Port on the SPI unit to
the Ethernet port on the top of the Smart Touch View Interface (STVI).
2. Before connecting power to the unit, make sure the SPI POWER ON/OFF Switch is in the OFF
position (0). Plug the unit line cord into an appropriate power source and turn the POWER
ON/OFF Switch to ON (1). As the SPI unit goes through its power up sequence, in about a
minute the STVI power up screen will appear, then the manual start up screen will appear.
2.2 Communication Ports
There are two types of communication ports on the STVI, one Ethernet, and two USB ports. On the SPI
unit there is a USB port and three Ethernet ports.

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2.2.1 Ethernet Port
There is one Ethernet port on the STVI for connecting to the SPI unit. Connect the STVI to the SPI unit
using the port labeled STVI (as shown in Figure 3).
Figure 3 - STVI port on the SPI
2.2.2 USB 2.0 Interface
There are two USB 2.0 Interface ports on the STVI unit (see Figure 2). These ports are used for
upgrading firmware in the unit, or upgrading the STVI software using a USB Memory Stick. They may
also be used in conjunction with a USB mouse for ease of manual control, even a USB wireless mouse
may be used with the STVI.
The Ethernet Port labeled “IN” is a 10/100BaseTX port, and is the primary PC connection port. This port
supports MDI/MDI-X auto crossover configuration, which means both standard and “crossover” Ethernet
cables may be used. Note that only one of the Ethernet ports may be used at a time (the intended use is
for control by the STVI or the PC).

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2.3 Smart Touch View Interface
The STVI is the manual control and user interface for the unit. All manual entries will be made through
the STVI unless the unit is connected to a personal computer. During the power up sequence the test
system automatically does a self-test to insure everything is operating properly. Once the system has
completed it’s self-checks the Introduction Screen will appear as shown in Figure 4. If the software
detects a SPI it will be automatically connected and the main SPI Startup Screen (Figure 8) will be
displayed.
Figure 4 - Introduction Screen
When using the PC version of the STVI software, the Instrument Selection Screen will be displayed.
Note that the software is used to communicate with numerous instruments. The SPI icon should be
located under the heading of Breaker Test Sets. Click on the SPI button in the Instrument Selection
Screen to connect to a SPI.
Figure 5 - Instrument Selection Screen

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The PC version will then display the Instrument Configuration screen as shown in Figure 6. Click the OK
button and the software will attempt to auto detect an instrument and connect. If no instrument is
detected due to firewall, VPN settings or an incorrect IP address the user will need to take appropriate
corrective action. In this case the firewall can be turned off or you can enter the IP address directly using
the Instrument Configuration screen. The user can un-check the Auto Discover Unit box and enter the IP
address directly in the field provided. The Auto Config IP address of the SPI unit can be found on the
nameplate of the test set.
Figure 6 - Instrument Configuration Screen
If the unit is on a network with a DHCP server, the user must use the Auto Discovery mode. Note that the
SPI Port selection field should be set to port 8000.
If the software detects a unit, the user will be shown a connection dialog similar to Figure 7. The user can
then select the desired SPI unit for connection.
Figure 7 –Connection Dialog

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The PC version of the software will then display the main SPI Startup Screen. Note that the connection
icon in the upper left corner will have a green background indicating that the SPI unit is connected
and the IP address was automatically set through the Ethernet port. The auto-detect process does not
require the user to enter an IP address. Once the software detects and connects to a unit, the connection
icon background will turn green and the SPI Startup Screen will appear (as shown in Figure 8).
Figure 8 - SPI Startup Screen
The SPI Startup screen provides access to the Manual test screen by pressing the Manual test
button , or the Circuit Breaker Curve Library button . The Circuit Breaker Curve Library screen
provides automated timing tests of circuit breakers and overload devices using either Generic or
Manufacturer Specific time curves. The software has ANSI and IEC standard time curve algorithms built-
in for molded case breakers. In addition, it includes time curves and time curve algorithms for different
specific molded case and air frame circuit breakers selectable by Manufacturer, Breaker Type, Curve
Family, Curve Model, Curve Trip Unit and Curve Name as applicable.
If this is the first time you have started up the SPI software it is recommended that you go to the
Configuration Screen first to setup the hardware, maximum durations, test currents, pulse times, and the
timer configuration.
2.3.1 Configuration

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Pressing the Configuration button will allow the user to configure both the SPI hardware and SPI
software. Pressing this button will display the Configuration screen (see Figure 9).
Note: The following button descriptions vary depending on hardware configuration and the
version of the SPI software. The STVI version of the software includes extra buttons as indicated
with an * in the descriptions below.
Figure 9 –SPI Configuration Screen
2.3.1.1 Max Time
The user can set the Maximum Time in seconds that the SPI will stay ON during a test. The default value
is 600 seconds.
2.3.1.2 Max Current
The user can set the Maximum Current that the SPI will output on the selected Output Tap. The default
value is 2000 Amps.
2.3.1.3 Tap Verification Current
This is a time saving feature used to automatically determine the Output Tap selected by the user. The
user simply connects to the desired output tap, and then to the device under test. Prior to applying a test
current the unit will pulse the Tap Verification Current into the load. Based upon the current value read
back by the measuring circuit, and knowing the ratio of the output taps, the software will automatically
reconfigure for the selected output tap. The default is 10 Amps.
Make sure that the Tap Verification Current value is below any instantaneous setting or
ground trip device setting of the device under test.
2.3.1.4 Timer Stop Cfg

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Controls the modes to stop the Timer and turn the output off. Pressing the button will present to the user
with three selections: Current Actuate, Dry Contacts Normally Open/Closed, and Voltage
Applied/Removed, see the following descriptions.
2.3.1.4.1 Current Actuate Mode
Current Actuate Mode: Timer will initiate only when the output circuit is completed, and a threshold
current of approximately 10% of the selected test current is exceeded. Timer will continue to run until
output circuit opens and the current drops below threshold level or output is de-energized by the user.
2.3.1.4.2 Normally Closed Contact Opening
With the BINARY INPUT terminals connected to normally closed external contacts, output circuit will
remain energized and timer will continue to run until contacts open.
2.3.1.4.3 Normally Open Contact Closing
With the BINARY INPUT terminals connected to normally open external contacts, output circuit will
remain energized and timer will continue to run until contacts close.
2.3.1.4.4 Voltage Applied
With the BINARY INPUT terminals connected to an external monitoring circuit, output circuit will
remain energized and timer will continue to run until an AC or DC Voltage is applied.
2.3.1.4.5 Voltage Removed
With the BINARY INPUT terminals connected to an external monitoring circuit, output circuit will
remain energized and timer will continue to run until an AC or DC Voltage is removed.
2.3.1.4.6 Post Deb (Debounce time)
This setting is associated with the BINARY INPUT Terminals, and Normally Open Contacts closing.
The Debounce time is set in milliseconds. The trip contacts must stay closed for the duration of the
Debounce time setting for the time test to be true. If the contacts open in less than the set Debounce
time the timer will continue to run. Once the input condition is true then the time test will conclude.
The trip time displayed will be the total test time less the debounce time.
2.3.1.4.7 Post Volt Thres. (Voltage Threshold)
This setting is associated with the BINARY INPUT Terminals and Voltage Applied test applications.
To serve a wide range of test applications the BINARY INPUT has a programmable voltage
threshold. For typical test applications the binary input has a defaulted threshold of 5 volts. A higher
threshold voltage helps to eliminate false triggers due to a noisy source. Lower thresholds allow
stopping of timer from TTL voltage signals. The allowable voltage applied is 1 to 300 Volts AC or DC,
programmable in 1 Volt increments.

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2.3.1.5 Help Button
Press this button to access the built-in manual or for help associated with the Configuration Screen.
2.3.1.6 Default Settings Options
Press this button to get access to the settings options of Save as Default, Restore Default, and Restore
Factory default settings (see Figure 10).
Figure 10 - Default Settings Options
2.3.1.6.1 Save as Default
Press this button and all of the changes made to the Configuration Screen and most of the
default values for all screens are now saved as the power up defaults.
2.3.1.6.2 Restore Default
Pressing this button provides the ability to restore the original system power up defaults.
2.3.1.6.3 Restore Factory
Pressing this button provides the ability to restore the original system factory power up defaults.
2.3.1.7 Display Versions (Information Screen)
Pressing this button will display model, serial number, software and firmware versions, and build dates.
This information is useful when calling Megger for service or technical support related issues.
2.3.1.8 Update Firmware
This button is used to update the SPI firmware.
2.3.1.9 Current Status
Displays the SPI current status screen. This information is mainly for use by Megger support staff.
2.3.1.10 Time Unit

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Set the time unit display to seconds or cycles.
2.3.1.11 Bluetooth Pwd
This button allows the user to set the SPI Bluetooth password.
2.3.1.12 Line Freq
This button displays the current Line Frequency.
2.3.1.13 Ld (Load) Connection
This button appears when the user selects one or more Slave units. This button provides for either
Parallel or Series connections of multiple SPI units. Press or click on the Ld
Connection button to toggle between Series or Parallel. In the parallel mode the SPI software will
automatically divide the requested test current by the number of units and output equally the same test
current from each unit in parallel so that the currents add across the load to equal the requested current
value. If two units are in series, it will set the requested test current from each unit so that the compliance
voltage from each unit will add together to push the current through the load.
2.3.1.14 Color Options
Press this button to adjust the colors of the vectors, backgrounds, lettering, etc.
2.3.1.15 Pickup Ramp Rate
Press this button to set the Current Ramp Rate in Amps/Sec to be used in the Pickup Test in the
Advanced Screen.
2.3.1.16 Pulse On Duration
Press this button to set the Pulse ON time in Cycles. Used when operating the test set in the Momentary
mode in the manual test screen, or when performing Instantaneous Pickup tests in the Automatic Mode.
2.3.1.17 Pulse Off Duration
Press this button to set the Pulse OFF time used in pulse ramping.
2.3.1.18 Ethernet (DHCP) IP Address
The STVI will auto-detect the SPI unit (the DHCP mode does not require the user to input an IP address).
If the unit is on a network with a DHCP server, the user must use the Auto Discovery mode. Using the
STVI, pressing the DHCP button will produce the Static IP Address Dialog box.
Figure 11 - Static IP Address Dialog Box
If using the PC version it too can auto-discover the SPI unit connected to the PC. On the PC version, the
PC might not auto detect due to firewall, VPN settings or anti-virus software. In this case the firewall can
be turned off, or you can enter the IP address directly using the PowerDB Instrument Configuration

19 PN: 81127
Rev 4, 6/2017
screen by clicking the SPI icon on the Instrument Selection screen (Figure 12). Un-checking the Auto
Discover Unit box will enable the IP address entry box (shown highlighted in red in Figure 12).
The AutoConfig IP address of the SPI225 unit can be found on the nameplate of the unit.
Figure 12 - PowerDB Instrument Configuration Screen
2.3.1.19 Set Date and Time*
Press this button to set the Date and Time in the STVI. This information is critical for saving tests and test
results using the internal file manager. The PC version uses the PC time and date.
2.3.1.20 Number Format*
Press this button to set the decimal point number format either as a period or as a comma.
2.3.1.21 Adjust Screen Brightness*
The brightness is adjustable on the STVI. The display will always be visible since hardware limits the
brightness from becoming too bright or too dark to be seen. Press this button and use the Control Knob
to increase or decrease the brightness. For the PC version use the PC screen controls to adjust the
display.
2.3.1.22 Logging*
Select this button to set up the logging with the STVI. The log will store a record of the commands sent to
the SPI unit from the STVI (used when troubleshooting).
2.3.1.23 Screen Exit