GE Kelman MULTITRANS User Manual

GEDE-GA_M-DLIS-TE.MA-003 Rev 3.0 18-Jan-16

GE

Grid Solutions

Kelman MULTITRANS™
User Guide

Transformer Oil
Dissolved Gas and Moisture Monitor

Contents

1 Introduction .................................................................................................................................... 5

1.1 Product Overview ................................................................................................................... 5

1.2 Manual Scope ......................................................................................................................... 5

2 Safety .............................................................................................................................................. 6

2.1 Symbols .................................................................................................................................. 6

2.2 Warnings ................................................................................................................................ 6

2.3 Hazardous Substances .......................................................................................................... 7

3 Technical Specification .................................................................................................................. 8

4 Compliance ..................................................................................................................................... 9

5 Power ............................................................................................................................................ 10

5.1 Introduction .......................................................................................................................... 10

5.2 Cold Start .............................................................................................................................. 10

5.3 Battery .................................................................................................................................. 11

5.4 Power-Down Procedure ...................................................................................................... 12

6 LCD Panel...................................................................................................................................... 13

6.1 LCD Notifications .................................................................................................................. 13

6.1.1 Startup .......................................................................................................................... 13

6.1.2 Manual Measurements ................................................................................................ 15

6.1.3 Manual Oil Sampling .................................................................................................... 16

6.1.4 Further System Specifications ..................................................................................... 17

6.2 Error Notification .................................................................................................................. 19

6.2.1 Error codes ................................................................................................................... 20

7 Manual Oil Sampling .................................................................................................................... 21

7.1 Sampling Arrangement........................................................................................................ 21

7.2 Sampling Process ................................................................................................................. 22

8 Air Filter Cleaning ......................................................................................................................... 24

9 Oil Filter Cleaning ......................................................................................................................... 26

10 Communications ...................................................................................................................... 27

11 Modbus Protocol ...................................................................................................................... 27

12 Service Logs .............................................................................................................................. 27

13 Technical Support .................................................................................................................... 27

Time Sync Implementation .......................................................................................... 28 Appendix A

Contact & Copyright Details ................................................................................................................ 30

Table of Figures

Figure 5—1: Power switch .................................................................................................................... 10

Figure 5—2: LED indicator lights & fuse holder ................................................................................... 10

Figure 5—3: Coin cell battery ............................................................................................................... 11

Figure 5—4: Standby mode ................................................................................................................. 12

Figure 5—5: Power switch .................................................................................................................... 12

Figure 5—6: Operation mode ............................................................................................................... 12

Figure 6—1: Inside view ....................................................................................................................... 13

Figure 6—2: Boot .................................................................................................................................. 14

Figure 6—3: Version ............................................................................................................................. 14

Figure 6—4: Standby mode ................................................................................................................. 14

Figure 6—5: Three sources .................................................................................................................. 14

Figure 6—6: Peripheral scheduler........................................................................................................ 15

Figure 6—7: Start a manual measurement ........................................................................................ 15

Figure 6—8: Oil switching ..................................................................................................................... 15

Figure 6—9: Stop a measurement ....................................................................................................... 16

Figure 6—10: Measurement data ........................................................................................................ 16

Figure 6—11: Measurement in progress ............................................................................................. 16

Figure 6—12: Standby mode ............................................................................................................... 16

Figure 6—13: Countdown & Purge ...................................................................................................... 17

Figure 6—14: Take sample & Standby................................................................................................. 17

Figure 6—15: Communication channels ............................................................................................. 17

Figure 6—16: Networking .................................................................................................................... 18

Figure 6—17: GSM / GPRS modem ...................................................................................................... 18

Figure 6—18: LCD error format ........................................................................................................... 19

Figure 6—19: LCD error example ......................................................................................................... 19

Figure 7—1: Oil filters and sampling port (front view) ........................................................................ 21

Figure 7—2: Valve orientation.............................................................................................................. 21

Figure 7—3: Sampling assembly ......................................................................................................... 21

Figure 7—4: Luer fitting on assembly .................................................................................................. 21

Figure 7—5: Manual oil sampling flowchart ....................................................................................... 22

Figure 8—1: Air filter ............................................................................................................................. 24

Figure 8—2: Metallic hood ................................................................................................................... 25

Figure 9—1: Oil filter ............................................................................................................................. 26

List of Tables

Table 3—1: Technical specification ....................................................................................................... 8

Table 4—1: Type tests ............................................................................................................................ 9

Table 5—1: External LED status indicators ......................................................................................... 10

Table 6—1: Errors ................................................................................................................................. 20

Table A—1: Timing ................................................................................................................................ 28

Table A—2: UNIX time registers ........................................................................................................... 28

Table A—3: Access flags....................................................................................................................... 29

Table A—4: Modifier flags ..................................................................................................................... 29

MA-003 – MULTITRANS User Guide – Rev 3.0 18-Jan-16 Page 5 of 30

1 INTRODUCTION

1.1 Product Overview

The MULTITRANS™ (herein referred to as the product) is an on-line DGA (Dissolved Gas
Analysis) system for transformer diagnostics. It is designed to monitor up to three
separate oil tanks or a bank of three single-phase transformers in close proximity. The
product measures the following key fault gases in the transformer oil: hydrogen,
methane, ethane, ethylene, carbon monoxide, carbon dioxide and acetylene. In
addition the product also measures oxygen, nitrogen as well as moisture in the oil and
the transformer load current. Such data provides insight on transformer condition
criteria, such as developing faults, paper degradation and electrical arcing. Once
installed, operation is straightforward. All results are stored within the product, but can be
downloaded to a PC for analysis.

The key features and characteristics are summarised as follows:

 Utilises dynamic headspace sampling to extract target gases from the oil sample.
 No consumables, such as carrier gases are required.
 Accurate results are available as often as once per hour.
 Minimal maintenance*.
 Uses highly accurate and stable Photo-acoustic Spectrographic technology.
 Fully embedded microprocessor with non-volatile internal memory storage for

10,000 records.

 Stainless steel outdoor-rated IP55 enclosure connected to the transformer by

robust stainless steel tubing.

 All gas sensing is carried out internally – no external gas sensors.
 Transformer load tracking is available.
 Six user-configurable relay contacts based on absolute gas and moisture values.
 Two user-configurable sunlight-visible LED arrays on the exterior of the enclosure –

one red for alarm, one yellow for caution.

 Two standard sunlight-visible LED arrays – green for power, blue for service.
 Communication options include: Ethernet, RS-232, Cellular modem (GSM/GPRS),

PSTN modem, RS-485 and Fibre Optic. Other options may be available on request.

 Internal USB connection provided for commissioning and service, or local data

download.

*Note: The only recommended maintenance is periodic cleaning of the air filters, in-line oil filter and
battery replacement.

1.2 Manual Scope

This guide outlines the use of the LCD panel, manual DGA sampling function and general
maintenance activities.

MA-003 – MULTITRANS User Guide – Rev 3.0 18-Jan-16 Page 6 of 30

2 SAFETY

2.1 Symbols

The following symbols are used in this manual and/or on this product:

General Warning or Caution. Refer to the Installation Manual / User
Guide to prevent injury or damage to equipment.

Electrical Hazard. Risk of electric shock.

Primary Protective Earth connection.

Hot surfaces may be present.

2.2 Warnings

The following warnings must be observed:

The minimum ambient temperature for installation and service activities is

−10 °C.

If the equipment is installed or used in a manner not specified by the

manufacturer, the protection provided by the equipment may be impaired.

If working at height, third parties must have received appropriate training for

working at height prior to work commencing. This includes, but is not limited to
"Working at height training".

If working at a height greater than 4 feet or at a height greater than that

stipulated by national or site regulatory requirements, it is the responsibility of
the user to ensure that planned work complies with those requirements.

The user shall also ensure that any third-party equipment, such as an approved

platform, scaffold or lift is suitable and safe before commencing work. Ladders
or improvised platforms do not meet GE service engineer requirements.

MA-003 – MULTITRANS User Guide – Rev 3.0 18-Jan-16 Page 7 of 30

Once installed, this product may have more than one source of supply.

Disconnect all supplies at their source before accessing the cabinet for
servicing. Follow the site lockout-tagout (LOTO) procedure.

Disconnection from the supply is achieved through the external circuit breaker

or switch.

Ensure all power sources, including relays, are de-energised as stipulated by

lockout-tagout (LOTO) requirements before removing inner covers.

The product is operated with the door shut under normal use. The door shall be

kept locked and should only be opened for service access by suitably qualified
and authorised service personnel. During service access, hazardous voltages
are accessible.

Only GE-trained and certified personnel may commission GE products.

Commissioning tasks include making any connections and/or performing any
work within the enclosure, or performing tasks such as purging the oil circuit
between the transformer and the product, and/or all first start-up procedures
relating to equipment or firmware/software.

The product provides IP55 level water spray protection. It is possible for a water

deluge system to exceed IP55 thresholds depending on the location, pressure
and direction of the water jets. Therefore should customers require testing a
water deluge system in the area in which the product is installed, GE
recommends powering down the product and draping it with a suitable
waterproof covering.

2.3 Hazardous Substances

The gases measured in the product are extracted from the oil and expelled to the
atmosphere. These gases are at concentrations that are nonflammable, nontoxic and
quickly diluted in the surrounding atmosphere. The expelled gases are not hazardous to
health or life.

MA-003 – MULTITRANS User Guide – Rev 3.0 18-Jan-16 Page 8 of 30

3 TECHNICAL SPECIFICATION

The product meets the following technical specification as outlined in Table 3—1.

Table 3—1: Technical specification

PARAMETER

VALUE/MEETS

GAS MEASURED

MEASUREMENT RANGE (ppm) and accuracy

Hydrogen (H2)

5 – 5,000 Accuracy ± 5% or ± LDL (whichever is greater) *1

Methane (CH4)

2 – 50,000 Accuracy ± 5% or ± LDL (whichever is greater) *1

Ethane (C2H6)

2 – 50,000 Accuracy ± 5% or ± LDL (whichever is greater) *1

Ethylene (C2H4)

2 – 50,000 Accuracy ± 5% or ± LDL (whichever is greater) *1

Acetylene (C2H2)

0.5 – 50,000 Accuracy ± 5% or ± LDL (whichever is greater) *1

Carbon Monoxide (CO)

2 – 50,000 Accuracy ± 5% or ± LDL (whichever is greater) *1

Carbon Dioxide (CO2)

20 – 50,000 Accuracy ± 5% or ± LDL (whichever is greater) *1

Oxygen (O2)

100 – 50,000 Accuracy ± 10% or ± LDL (whichever is greater) *1

Nitrogen (N2)

(Available on free-breathing transformers
only)

10,000 - 100,000 ppm Accuracy ± 15% or ± LDL (whichever is

greater)

*1

Moisture (H2O)

0 – 100% RS (given in ppm)

ENVIRONMENTAL

External temperature range

−40 °C to 55 °C

Oil temperature range

−20 °C to 120 °C*2

Altitude

Up to 2000 m

Atmospheric pressure

Up to 1050 mbar

Operating humidity

10 – 95% RH non-condensing

Enclosure

IP55

Weight

76.5 kg (169 lb)

POWER REQUIREMENTS

110 / 230 V AC*3 (factory set), 50/60 Hz, 8 A Max

Single phase Alarm Relays: NO and NC
provided

3 A 250 V AC, 150 mA 300 V DC*4, 200 mA 125 V DC, 3 A 30 V DC
Fuses *5

10 A 500 V (Cooper Bussmann BAF), 10x38 mm

MEASUREMENT FREQUENCY

Variable – Once per hour to once every 4 weeks

*1 Note: Accuracy quoted is the accuracy of detectors during calibration; gas-in-oil measurement
accuracy may also be affected by sampling and/or oil type.

*2 Note: Based on testing carried out using VOLTESSO™ 35 mineral oil over a ¼ in. pipe run of 10 metres
or less from oil supply or return valve to product connection point, and on transformer oil supply valve
volumes of 200ml or less. For oil temperatures colder than -20 ºC, GE recommends the use of heat trace
cabling on piping.

*3 Note: Voltage ranges:

Set Voltage (V AC)

Minimum I/P Voltage (V AC)

Maximum I/P Voltage (V AC)

110

100

121

230

207

253

*4 Note: Maximum DC breaking capacity for a resistive load.

*5 Note: Use only the approved and recommended fuse to ensure continued fire protection and
compliance.

MA-003 – MULTITRANS User Guide – Rev 3.0 18-Jan-16 Page 9 of 30

4 COMPLIANCE

The product is designed to meet the following type tests as listed in Table 4—1:

Table 4—1: Type tests

Category

Standard

Class/Level

Test

EMC Emissions –
EN 61326-1:2006

CISPR 11

A

Radiated & Conducted Emissions

FCC Part 15

Meets the requirements of A

Radiated & Conducted Emissions

EN 61000-3-2

A

Harmonic Current Emissions
Limits

EMC Immunity –
EN 61326-1:2006

EN 61000-4-2

IV

Electrostatic Discharge

EN 61000-4-3

III

Electromagnetic Field Immunity

EN 61000-4-4

III

Electrical Fast Transients

EN 61000-4-5

III

Surge Immunity

EN 61000-4-6

III

Conducted RF Immunity

EN 61000-4-8

IV & V

Magnetic Field Immunity

IEC 61000-4-9

X

Pulsed Magnetic Field Immunity

IEC 61000-4-10

X

Damped Oscillatory Magnetic
Field Immunity

EN 61000-4-11

III

Voltage Dips & Interruptions

IEC 61000-4-12

X 2.5 kV & 1kV

Oscillatory Wave

IEC 61000-4-18

X

Damped Oscillatory Wave

EN 61000-3-3

Pst 10 min, Plt 120 min

Voltage fluctuations & flicker

EN 60255-5

5 kV, 2 kV & 500 V DC

Impulse, Dielectric & Insulation
resistance testing

Environmental

IEC 60068-2-1

−40 °C

Cold

IEC 60068-2-2

55 °C

Dry Heat

IEC 60068-2-6

10 – 150 Hz, 0.5 g operation
10 – 150 Hz, 0.5 g endurance

Vibration
IEC 60068-2-30

55 °C, 95% RH

Damp Heat

EN 60529

IP55

Degree of Protection

Safety

IEC 61010-1

2010

EN 61010-1

2010

UL 61010-1

2012

MA-003 – MULTITRANS User Guide – Rev 3.0 18-Jan-16 Page 10 of 30

5 POWER

5.1 Introduction

The product is powered up by pressing the Power switch located inside the product
towards the bottom right-hand side (see Figure 5—1). The mains fuse holder for the
product is shown in Figure 5—2.

Figure 5—1: Power switch

Figure 5—2: LED indicator lights & fuse holder

The product uses four external sunlight-visible LEDs on the front door. Each LED has two
states – ‘Off’ (-) or ‘On’ as outlined in Table 5—1.

Table 5—1: External LED status indicators

Mode

Alarm (red) LED

Caution (yellow) LED

Power (green) LED

Service (blue) LED

Power Off

- - -

-

Normal

- - On

-

Alarm

On - On

-

Caution

-

On

On

-

Service

- - On

On

5.2 Cold Start

If the product is powered up in cold conditions (less than −10 °C), the product initiates the
following cold-start sequence before a measurement can commence. The internal heater
in zone 1 automatically switches on to increase the internal temperature to within the
PGA operational temperature range. The system does not fully power up until the
working temperature in zone 1 reaches −10 °C, after which the system becomes
operational. Lights for the system power supplies are situated on the circuit board at the
rear as shown in Figure 5—2.

Note: Once the DC power supply resumes, the internal temperature of the product may take several
hours to reach working temperature before a measurement cycle commences.

24 V DC

LED

12 V DC

LED

Fuse holders for
mains input power

MA-003 – MULTITRANS User Guide – Rev 3.0 18-Jan-16 Page 11 of 30

5.3 Battery

The product uses a non-rechargeable lithium coin cell battery (Panasonic CR2450 3 V 620
mAh) as shown in Figure 5—3. In the event that the battery needs to be replaced, data
from the product must be backed up. Failure to do so may result in historical data loss.

Figure 5—3: Coin cell battery

The following steps describe how to change the battery:

1. Back up the product data – contact your GE representative.

2. Open the inner door to locate the battery on the system board (as

shown in Figure 5—3).

3. Slide the battery out of its housing.

4. Replace with a new Panasonic CR2450 3 V 620 mAh coin cell.

5. Close the inner door.

There is a danger of a new battery exploding if installed incorrectly.

Dispose of the used battery in accordance with local regulations — not in a fire

or with household waste. Contact your local waste disposal agency for the
address of the nearest battery deposit site. Perchlorate material — special
handling may apply. See: www.dtsc.ca.gov/hazardouswaste/perchlorate/

MA-003 – MULTITRANS User Guide – Rev 3.0 18-Jan-16 Page 12 of 30

5.4 Power-Down Procedure

If the transformer is to be shut down or the product needs to be shut down, perform the
following steps:

1. Open the door of the product and observe the operating mode on the LCD panel.

2. If the product is in Standby mode as shown in Figure 5—4, perform the following

steps:

 Turn the switch on the inner door to the ‘Off’ position as shown in Figure 5—5.
 Turn the external switch or circuit breaker to the ‘Off’ position.
 Turn the transformer oil valves that connect to the input and output of the

product to the ‘Off’ position.

Figure 5—4: Standby mode

Figure 5—5: Power switch

Figure 5—6: Operation mode

3. If for example, as shown in Figure 5—6 the product is in Operation mode, perform

the following steps:

 Press the red Stop button (Figure 5—4) or use the TRANSCONNECT software to

stop an active measurement.
The LCD reads “OIL DRAINING”. This process may take several minutes.

 When the product returns to Standby mode as shown in Figure 5—4, turn the

switch on the inner door to the ‘Off’ position as shown in Figure 5—5.

 Turn the external switch or circuit breaker to the ‘Off’ position.
 Turn the transformer oil valves that connect to the input and output of the

product to the ‘Off’ position.

When the product is to be powered up again, first turn the transformer oil valves that
connect to the input and output of the product to the ‘On’ position. Then turn on the
external switch or circuit breaker. Finally turn the switch on the inner door to the ‘On’
position. The product will be ready to resume taking scheduled readings.

MA-003 – MULTITRANS User Guide – Rev 3.0 18-Jan-16 Page 13 of 30

6 LCD PANEL

The LCD panel is located on the inner cover and is visible when the door is open as shown
in Figure 6—1.

Figure 6—1: Inside view

During an analysis, the LCD panel shows the serial number of the product and the
operational state. The last measurement results with date and time stamps can be
obtained by using the black scroll buttons to page up or down through the details (see
Section 6.1 for examples). By default, automatic paging is turned off.

6.1 LCD Notifications

The section outlines some examples of the notices and data pages rendered on the LCD
panel for a standard environment using factory settings. It illustrates typical information
that a user is likely to see during normal operation. This can vary depending on the
operational environment, firmware version and how the product is configured.

6.1.1 Startup

6.1.1.1 Boot

The Boot notice displays after power up or reset and progresses through a code checking
sequence as shown in Figure 6—2. If boot problems occur, the product raises an error.
Contact the Customer Service Centre.

On/Off Switch

LCD Panel

Scroll Up

Scroll Down

Start

Stop

Manual Sample

USB Connection

MA-003 – MULTITRANS User Guide – Rev 3.0 18-Jan-16 Page 14 of 30

Figure 6—2: Boot

6.1.1.2 Version

If the boot sequence is successful, a Version notice reflects the product name, serial
number, firmware version and PGA version as shown in Figure 6—3. Use the black scroll
buttons at any time to page through the various notifications and data pages, including
existing measurement results.

Figure 6—3: Version

6.1.1.3 Standby

A notification indicates the operational mode as shown in Figure 6—5. Standby mode is
the initial operational mode. If scheduled measurements are configured, they will occur
automatically at the scheduled time (see Section 6.1.2.4). If there are no scheduled
measurements, the Scheduler Disabled notice displays.

or

Figure 6—4: Standby mode

Use the black scroll buttons at any time to page through any data pages for the three
sources.

Figure 6—5: Three sources

6.1.1.4 Peripheral Scheduler

A notification lists all peripheral connections as shown in Figure 6—6. If the peripheral
scheduler is enabled, all analogue inputs are listed with corresponding null values. The
product has analogue inputs AIn1 to AIn6, but corresponding values for these appear

DLM 1.2.0

CODE CHECKING

MULTITRANS
MT1-A000000

1.12.2

PGA: 4.0.0

PERIPHERAL SCHEDULER

STANDBY

>>> OK <<<

2013-07-30 10:00:00

SCHEDULER DISABLED

SOURCE 1

>>> OK <<<

SOURCE 2

>>> OK <<<

SOURCE 3

>>> OK <<<

MA-003 – MULTITRANS User Guide – Rev 3.0 18-Jan-16 Page 15 of 30

after peripheral(s) are connected. By default, a newly shipped product has no connected
peripherals, but a configured installation may have a load sensor connected.

or

Figure 6—6: Peripheral scheduler

6.1.2 Manual Measurements

6.1.2.1 Start a Manual Measurement

Use the blue Start button to initiate a manual measurement on the main tank. The timer
automatically counts down from 10 seconds and then indicates the start of a manual
measurement as shown in Figure 6—7. Note: If the selected oil circuit is different from the previous

oil circuit, an oil switching notice also displays as outlined in Section 6.1.2.2.

Figure 6—7: Start a manual measurement

6.1.2.2 Oil Switching

If the current oil circuit (the one last measured) is different from the selected oil circuit to
measure, the product first needs to switch between oil circuits before a measurement
can begin. Figure 6—8 indicates switching from one circuit to another.

Figure 6—8: Oil switching

6.1.2.3 Stop a Measurement

Use the red Stop button to abort an active measurement. After any remaining oil in the
headspace drains, the product returns to Standby as shown in Figure 6—9.

PERIPHERAL SCHEDULER

DISABLED

>>> OK <<<

SOURCE 1
Analn0 0000.0uuu
Analn1 0000.0uuu
Analn2 0000.0uuu

SOURCE 1

MEASUREMENT IN

10 s

2013-07-30 11:21:00

SOURCE 1

MEASUREMENT STARTED

2013-07-30 11:21:10

SOURCE1

>>> OK <<<

2013-07-30 11:21:10

2013-07-30 11:45:00

OIL SWITCHING

2013-07-30 11:45:00

OIL DRAINING

MA-003 – MULTITRANS User Guide – Rev 3.0 18-Jan-16 Page 16 of 30

Figure 6—9: Stop a measurement

6.1.2.4 Measurement Data

Use the black scroll buttons at any time to page through the notices and see the
measurement data. For example, data for Source 1 is shown in Figure 6—10. Similar
pages display for each oil source in turn (Sources 2 and 3). The product can also be
configured to automatically page through the results of the last analysis for each oil
source. Note: If nitrogen measurement is not enabled, the nitrogen and total gas concentration is omitted.

Figure 6—10: Measurement data

6.1.3 Manual Oil Sampling

Use the white Manual Sample button to initiate the manual oil sampling process. If the
white Manual Sample button is pressed during a measurement, the notice shown in
Figure 6—11 displays.

Figure 6—11: Measurement in progress

Wait until the current measurement process is complete or stop the current
measurement process (See Section 6.1.2.3). The system returns to Standby as shown in
Figure 6—12.

Figure 6—12: Standby mode

2013-07-30 12:00:00

STANDBY

SOURCE 1

LAST MEASUREMENT

2013-07-30 12:48:10

SOURCE 1

H2 15170.0 ppm
CH4 333.0 ppm
C2H6 3320.0ppm

SOURCE 1

C2H4 5000.0ppm
C2H2 2345.0ppm
TDCG 26390.0ppm

SOURCE 1

H2O 1040.0ppm
CO 222.0ppm
CO2 234.0ppm

SOURCE 1

O2 4190.0ppm

SOURCE 1

Amb Temp - 0.1 °C
Oil Temp +38.3 °C
Oil Press +97.1 kPa

SOURCE 1

AIN 1 -1.111xxx

SOURCE 1

NEXT MEASUREMENT

2013-07-30 16:48

MANUAL DGA PREVENTED

MEASUREMENT IN PROGRESS

2013-07-30 12:00:00

STANDBY

MA-003 – MULTITRANS User Guide – Rev 3.0 18-Jan-16 Page 17 of 30

A single press of the white Manual Sample button during Standby, selects the current oil
circuit for sampling. Subsequent presses of the button are used to toggle through and
select a different oil circuit from the three available. Once a circuit is displayed, the timer
automatically counts down from 10 seconds and if the white button is not pressed again,
the listed circuit is selected for manual oil sampling. After the count down an oil purge is
performed as shown in Figure 6—13.

Figure 6—13: Countdown & Purge

Note: The oil must be purged for a suitable period of time dependent on the installation. See the ‘Sampling
Process’ in Section 7.2.

The system prompts the user to take the manual oil sample and then returns to Standby
mode when complete as shown in Figure 6—14.

Figure 6—14: Take sample & Standby

6.1.4 Further System Specifications

6.1.4.1 Communications Channels

The product has two serial communications channels. For example, default configuration
details are shown in Figure 6—15, such as the interface, protocol, baud rate, modbus
address and parity error-checking format:

Figure 6—15: Communication channels

6.1.4.2 Networking

If Ethernet is enabled and a RJ-45 connection made, relevant network details are shown.
For security reasons, all network details are hidden by default as shown in Figure 6—16,
but these can be software enabled.

SOURCE 1

MANUAL DGA IN

10s

SOURCE 1

>>> MANUAL DGA <<<

PURGING OIL

PRESS KEY WHEN DONE

SOURCE 1

>>> MANUAL DGA <<<

TAKE OIL SAMPLE

PRESS KEY WHEN DONE

2013-07-30 12:00:00

STANDBY

ChA RTU 1 RS232

19200 0

ChB: ASC 1 GSMGPRS

57600 0

MA-003 – MULTITRANS User Guide – Rev 3.0 18-Jan-16 Page 18 of 30

Figure 6—16: Networking

6.1.4.3 Other System Details

Additional notifications reflect the configuration of the product. For example, if a
GSM/GPRS modem is fitted, additional page(s) as shown in Figure 6—17 reflect the
communications provider, signal strength and any problems.

Figure 6—17: GSM / GPRS modem

Notes:

a) Actual product values depend on the installation at any moment in time.
b) Actual parameter format can vary e.g. O2 or Oxygen.
c) See Section 6.2 for a list of defined error codes.
d) System Failure mode limits functionality. Contact the Customer Service Centre.

IP: XXX.XXX.XXX.XXX
SUB: XXX.XXX.XXX.XXX
GW: XXX.XXX.XXX.XXX

TCP: 502

vodafone UK

MAJOR GPRS PROBLEM

MA-003 – MULTITRANS User Guide – Rev 3.0 18-Jan-16 Page 19 of 30

6.2 Error Notification

The LCD panel lists the last detected errors using a sequence of double-digit codes. A 00
state code denotes the absence of errors, whereas a non-zero state code denotes one or
more errors. See Section 6.2.1 for a list of the error codes. The error format is shown in
Figure 6—18. The top line is used to indicate the state within the measurement process at
which the error occurred, where uppercase ‘XX’ denotes the Oxygen sensor error state (if
the Oxygen sensor is enabled) and uppercase ‘YY’ the PGA error state. The bottom line

denotes specific error codes within that state, where the lowercase ‘xx’ code relates to
the specific Oxygen sensor error and all the remaining ‘yy’ codes relate to specific PGA

errors. Note: The Customer Service Centre requires both the state code(s) and error code(s) in order to

interpret any error.

Figure 6—18: LCD error format

For example, Figure 6—19 shows the product with one PGA error. The first code on the
top line reads 00 which means no reported errors from the Oxygen sensor. The next code
reads 02 which means a reported PGA error in the oil purging state. If there are no
Oxygen sensor errors, the first error code on the bottom line always reads 00. The next
code reads 18 which means that the PGA has detected that the oil pressure is too low.

Figure 6—19: LCD error example

Note: If the Oxygen sensor is not enabled, no Oxygen sensor state or error codes display.

Note: If there is no PGA error, the PGA error state in the top line always reads 00.

MULTITRANS

>>> ERROR (00, 02)<<<

00, 18

MULTITRANS

>>> ERROR (XX, YY) <<<

xx, yy, yy, yy, yy, yy, yy

State codes

Error codes

MA-003 – MULTITRANS User Guide – Rev 3.0 18-Jan-16 Page 20 of 30

6.2.1 Error codes

The LCD panel error codes are listed in Table 6—1. All the service alarm error codes are
accompanied by illumination of the blue Service light that is visible on the front door of
the product.

Note: Error codes are offset by 1 from the MODBUS register bit numbers.

Note: This information relates to firmware version PGA 3.0.81 for MULTITRANS.

Table 6—1: Errors

Code

Error

Note

PGA Connection Error

Timeout

01

PGA power supply voltage too low

02

PGA chopper frequency outside range

03

PGA IR-source outside range

04

Gas flow lower than limit

05

Background noise/vibration too high

06

Microphone test failed

07

Not level sensor 1 pulses (level)

08

Not level sensor 3 (drain)

09

Fill level shows Oil

10

Over Fill shows Oil

11

PGA Air temperature outside limits

12

Bad communication with control PCB

13

Gas leak test: Pump pressure too low

14

Gas leak test: Pressure decay too high

15

Unusual ambient gas measurements

16

Oil temperature too low

17

Oil temperature too high

18

Oil pressure too low

Check that all oil supply valves are open.

19

Oil pressure too high

Check that all oil return valves are open.

20

Oil pump tacho count too high

21

Oil pump pressure too low

22

Oil pump speed out of range

23

Manual oil sampling switch

24

Oil pump tacho count too low

25

Oil pump not turning

26 - Not used.

27

Temperature Sensor(s) 1 disconnected

28

Temperature Sensor(s) 2 disconnected

29

Drain level shows oil

30

Conditioned oil temperature outside limits

MA-003 – MULTITRANS User Guide – Rev 3.0 18-Jan-16 Page 21 of 30

7 MANUAL OIL SAMPLING

A manual oil sample can be taken via the following arrangement.

Before commencing work, ensure the use of suitable protective gloves,

such as nitrile rubber.

7.1 Sampling Arrangement

The product has one manual oil sampling port fitted to the base. This consists of a quick­connect body and a captive body-protector fitting as shown in Figure 7—1. The product
ensures that there is fresh oil at the sampling point when the sampling process takes
place.

Figure 7—1: Oil filters and sampling port (front view)

A male quick-connect fitting and valve assembly is provided in the product installation kit.
GE also recommends the use of a 50-mL ground glass syringe.

Note: The manual oil sampling arrangement and the quick-connect sampling port must not be
cleaned with any type of solvent as this could affect results for subsequent oil samples.

Figure 7—2: Valve orientation

Figure 7—3: Sampling assembly

Figure 7—4: Luer fitting on assembly

CLOSED

Oil sampling valve assembly with
Luer fitting

OPEN

Quick-connect body

protector with pull­down collar for
release

Product casing

Oil filters

Sampling
port

MA-003 – MULTITRANS User Guide – Rev 3.0 18-Jan-16 Page 22 of 30

7.2 Sampling Process

Open the door of the product and observe the operating mode on the LCD panel. The
flowchart shown in Figure 7—5 and the accompanying steps summarise the process to
obtain a manual oil sample.

Figure 7—5: Manual oil sampling flowchart

Open sampling

valve and take oil

sample

Close sampling

valve

Remove male fitting

and valve assembly

Replace quick-

connect body

protector

Standby mode

Measurement

mode

Press Stop button

Oil Drains

Standby mode

Attach male fitting

and valve assembly

with valve closed

Press Manual Sample

button x1,2 or 3 to

select oil circuit

Wait at least

several minutes for

oil to purge…

Press Manual Sample

button

Press Manual Sample

button

Remove quick-

connect body

protector

MA-003 – MULTITRANS User Guide – Rev 3.0 18-Jan-16 Page 23 of 30

1. If the product is in Standby mode, proceed to step 3. If the product is in

Measurement mode, manual sampling is prevented.

2. Press the red Stop button to stop the measurement process. The display reads

“OIL DRAINING”. If there is oil in the headspace, the draining process may take
several minutes. The product returns to Standby mode.

3. When the product is in Standby mode, remove the quick-connect body protector

by pulling the collar down.

4. Fit the male quick-connect fitting and valve assembly to the correct quick-connect

body on the base of the product as shown in Section 7.1. Ensure that the valve is
closed to prevent oil leakage.

5. Press the white Manual Sample button. The display reads “MANUAL DGA IN: 10s”.

Subsequent presses of the white button are used to toggle through and select the
required oil circuit to sample. Once a circuit name is displayed, the timer
automatically counts down from 10 seconds, and if the white button is not
pressed again, the displayed circuit is selected for manual sampling. Note: If the

product has to first switch oil circuits from the last measured circuit to the selected circuit, an “OIL
SWITCHING” notice displays.

6. An oil line purging process starts. The display reads “MANUAL DGA PURGING OIL

PRESS KEY WHEN DONE”.
To ensure accurate results, oil must be adequately purged before sampling
begins. This brings fresh oil from the transformer to the manual oil sampling port.
Typically this means waiting approximately 5–10 minutes, but the recommended
wait time can vary depending on the installation (longer tubing and lower
temperatures can increase the purge duration). Consult with Technical Support.

7. Press the white Manual Sample button. The display reads “{oil circuit name}

MANUAL DGA TAKE OIL SAMPLE PRESS KEY WHEN DONE”. Note: This indicates that the

oil sampling process can begin.

8. Remove the Luer fitting cap, connect the oil sampling equipment e.g. syringe, and

perform the oil sampling according to your standard process and procedures.

9. When finished sampling, close the valve and disconnect the oil sampling

equipment.

10. Remove the male fitting and valve assembly, and replace the body protector

fitting on the quick-connect body.

11. Press the white Manual Sample button to return the product to Standby mode.

Note: If left in Manual Sampling mode, the product reverts to Standby mode after one hour.
Measurement then begins at the next scheduled measurement time.

To start a measurement immediately, press the blue Start button and then select
the oil circuit to measure.

To take a manual sample from another oil circuit, press the white Manual Sample button
again. If a measurement has started since the previous sample, first press the red Stop
button.

See Section 6.1 for example notifications from the LCD panel.

MA-003 – MULTITRANS User Guide – Rev 3.0 18-Jan-16 Page 24 of 30

8 AIR FILTER CLEANING

The product draws air from the bottom and expels it on the right-hand side. The intake
air is filtered to remove the largest particles, so depending on environmental conditions
the air filter may need occasional cleaning. The outlet filter may also require attention. A
higher temperature in zone two can be an indication that such action is required.

To clean the air intake filter:

1. First isolate the product through the external circuit breaker or external

switch before opening the inner door on the right. Isolate any other power sources
to the system board relays and apply LOTO. Note: Remove the AC cover to gain access to

the filter assembly.

2. If a cable-tie is fitted to the filter holder, first carefully remove it. Remove the filter

holder by pulling off the black snap-off cover to the filter.

3. If the filter mat is just dusty, clean it with dry compressed air or by beating it

against a hard clean surface.

4. If the filter mat is oily, clean it with mild detergent and water, and then dry it

thoroughly.

5. Replace the filter mat and snap the cover back in place. Note: The cable tie only secures

the filter holder during shipping so there is no requirement to replace.

6. Close the inner door and re-energise the product.

Figure 8—1: Air filter

MA-003 – MULTITRANS User Guide – Rev 3.0 18-Jan-16 Page 25 of 30

To clean the air outlet filter:

1. Slide up and remove the metallic hood on the right-hand side of the product

casing to reveal the black fan / filter assembly. Note: Use a rubber mallet to assist with

removing the hood.

2. If a cable-tie is fitted to the filter holder, first carefully remove it. Remove the filter

holder by pulling off the black snap-off cover to the filter.

3. If the filter mat is just dusty, clean it with dry compressed air or by beating it

against a hard clean surface.

4. If the filter mat is oily, clean it with mild detergent and water, and then dry it

thoroughly.

5. Replace the filter mat and snap the cover back in place. Note: The cable tie only secures

the filter holder during shipping so there is no requirement to replace.

6. Replace the metallic hood over the filter assembly and re-energise the product.

Figure 8—2: Metallic hood

MA-003 – MULTITRANS User Guide – Rev 3.0 18-Jan-16 Page 26 of 30

9 OIL FILTER CLEANING

The oil is filtered to prevent particles from entering the product or being returned to the
transformer. Therefore this filter may need occasional cleaning.

Note: A non-critical error in the product data file, such as error code 18 or 20 can be suggestive of such
action.

See Figure 7—1 to view the oil filter connections at the bottom of the product. Figure 9—1
shows a typical oil filter used in the product.

Figure 9—1: Oil filter

Before removing the filter housing, first isolate the product through the external

switch or circuit breaker and ensure that the oil supply valve is closed.

To clean the oil filter:

1. If a measurement is in progress, press the red Stop button. This will abort the

measurement process and return the product to Standby mode. Power off the
product at the external switch or circuit breaker once it is in Standby mode.

2. Remove the 1 in. nut that secures the filter housing using a suitable wrench.

Care must be taken because there is also a spring behind the filter. Note: A little oil

may leak out.

3. Remove the filter and clean it using a brush and compressed air. Then replace the

filter back into its housing and re-secure the housing.

4. Replace the nut, but use a second wrench to hold the filter housing in place while

the nut is tightened to 65 N.m with a torque wrench.

5. Re-energise the product and it will automatically begin measuring at the next

scheduled time.

Note: The compression nuts on either side may need to be loosened slightly to position the filter at a
more convenient angle, but must be re-tightened afterwards.

MA-003 – MULTITRANS User Guide – Rev 3.0 18-Jan-16 Page 27 of 30

10 COMMUNICATIONS

See the Communications section of the TRANSFIX-family Installation Manual (MA-001) for
available communication options.

11 MODBUS PROTOCOL

See document 32-0245 for details of the Modbus protocol for all TRANSFIX family
products.

12 SERVICE LOGS

Service logs can be obtained by using either the Kelman Download utility or the

Perception transformer monitoring software v1.12 or later. See the ‘Downloading service
logs’ section in the Perception User Guide.

13 TECHNICAL SUPPORT

For technical support, please contact the GE Customer Service Center. Available 24 hours
a day, 365 days a year.

[phone] toll free (US/Canada)

[phone] (worldwide)

[e-mail]

MA-003 – MULTITRANS User Guide – Rev 3.0 18-Jan-16 Page 28 of 30

Time Sync Implementation

Appendix A

The product has a time-sync feature that allows users to synchronize the clock. This
Appendix explains the data format options for the “time sync” and its implementation.

Time Format A.1

Under the standard Modbus® register list, the timing is defined in Table A—1.

Table A—1: Timing

Register

Permissions

Group

Size

Description

Data

Format

1200

R/W

4*

UTC Clock: Years

YYYY (BCD)

1201

UTC Clock: Months, days

MMDD (BCD)

1202

UTC Clock: Hours, minutes

HHMM (BCD)

1203

UTC Clock: Seconds, Day of week
(0-6, 0 Sunday)

SSWW (BCD)

This R/W (read/write) register is in BCD format (Binary Coded Decimal). Some systems are
not compatible with this data format. *The time registers can be written separately in 5
seconds interval in any order. This feature is available starting TransfixHost v1.12.4.

UNIX® Epoch register A.2

A UNIX Epoch register was added to the host board firmware (v1.12.2) to make systems
integration easier in cases of system incompatibility. Both register formats (BCD & UNIX)
will be maintained in future firmware versions and both affect the same single clock. The
details of the UNIX time registers are listed in Table A—2.

Table A—2: UNIX time registers

Register

Access

Flags

Version

Storage

Class

Effect

After

Name

Description

Data

Format

1197

rg2,wg2

1.12.2

RAM

immediately

RTC_UNIX
_TIME

Current Time
UTC in UNIX
format

32-bit
integer

1198

These registers are readable and writable, but should be written together as a single 32
bit value.

A.2.1 UNIX Time Format

The number of seconds from the UNIX epoch time of 1st Jan 1970 00:00.

A.2.2 UNIX Time Example

For reference, the time on a device is reported in TransConnect as 12 Aug 2011 11:56:00
BST and the corresponding value in the registers mentioned above is 13146616.

When testing, please check that you are reading registers 1197-1198 (assuming
addresses start at 999 +1) and decoding an unsigned 32 bit big endian number. The
epoch time is in UTC. This matches the device time. An online converter e.g.

http://www.epochconverter.com/ can be used to verify.

A.2.3 Register Access Control

The product registers are protected with access flags. The register map details the
relevant access flags for each register. Each register may have one or more access flags,
separated by commas. Table A—3 lists the supported access flags:

Table A—3: Access flags

Access flags may be modified with the addition of the modifier flags listed in Table A—4.

Table A—4: Modifier flags

Flag

Access

Description

u

User

Only accessible if the master is authorised with user access

c

Config

Only accessible if master is authorised as config (commissioning) user

f

Factory

Only accessible if master is authorised as factory (service) user

Flag

Access

Description

r

Read

Read access to a single register

rgN

Read group

Read access to a group of length N (Nmax = 120)

w

Write

Write access to a single register

wgN

Write group

Write access to a group of length N (Nmax = 120)