Multitel SDTA-02 User manual

SDTA-02
Step Down Transformer Adapter
User’s Manual

1
PROPRIETARY INFORMATION
The information contained in this document is the property of MULTITEL INC. Except as
specifically authorized in writing by MULTITEL INC., the holder of this document shall:
1. Keep all information contained herein confidential and shall protect same in whole or in
part from disclosure and dissemination to all third parties and
2. Use the same for operating and maintenance purposes only.
© 2001 Multitel Inc.
Printed in Canada 06/2001
Document name:
UMSDTA02012
Issue:
1.2
Revised by:
Eric Boivin
Date:
07/10/11
SDTA-02
Step Down Transformer Adapter
User Manual

2

www.multitel.com [email protected]
3
TABLE OF CONTENTS
CONTROL SHEET ..........................................................................................................4
CONTROL SHEET ..........................................................................................................4
1. GENERAL INFORMATION...................................................................................5
1.1 DESCRIPTION.................................................................................................................... 5
2. SUMMARY OF SPECIFICATIONS........................................................................7
2.1 ELECTRICAL ...................................................................................................................... 7
2.2 ENVIRONMENTAL............................................................................................................. 7
2.3 MECHANICAL .................................................................................................................... 7
3. OPERATION.........................................................................................................8
3.1 GENERAL............................................................................................................................ 8
3.2 ANALOG CHANNEL SETUP ............................................................................................. 8
3.3 MULTITEL MONITORING SYSTEM CONFIGURATION SETUP.................................. 8
4. INSTALLATION...................................................................................................10
4.1 TOOLS AND EQUIPMENT.............................................................................................. 10
4.2 MOUNTING THE SYSTEM.............................................................................................. 10
4.3 WIRING AND CONNECTING.......................................................................................... 11
4.3.1 GENERAL INFORMATION ........................................................................................ 12
4.4 ALERNATIVE VOLTAGE MEASUREMENTS................................................................. 12
5. MAINTENANCE.................................................................................................16
5.1 CALIBRATION .................................................................................................................. 16
5.2 TROUBLESHOOTING...................................................................................................... 16
5.2.1 General......................................................................................................................... 16
FIGURES:
Figure 1 - Physical Aspect.................................................................................................................6
Figure 2 - Wall Mount Installation of the SDTA-02........................................................................11
Figure 3 - AC Current and Voltage Measurements.........................................................................13
Figure 4 - Connector Definitions......................................................................................................14
TABLES:
Table 1 – SDTA-02 Models and Part Numbers...................................................................................5
Table 2 – Current and voltage data for analog channel configuration...............................................8
Table 3 – SDTA-02 Setup ....................................................................................................................9
Table 4 – Diagnosis Path for Troubleshooting .................................................................................17

www.multitel.com [email protected]
4
CONTROL SHEET
ISSUE DATE DESCRIPTION ORIGINATOR
1.0 93/06/25 First English issue. Pierre Poulin
1.01 94/10/12 - -
1.02 97/05/08 Minor modifications and new formatting. François Dionne
1.1 00/06/16 New certification information for CSA-c
and CSA-US
Gilles Belleau
1.12 01/09 Review Johanne Lavallée
Gilles Belleau
1.2 10/07/11 Changer adresse E. Boivin

SDTA-02 GENERAL INFORMATION
www.multitel.com [email protected]
5
1. GENERAL INFORMATION
1.1 DESCRIPTION
The SDTA-02 is an interface accessory that converts AC voltage and current signals into an
AC signal compatible with MULTITEL monitoring systems.
The following list shows the eight possible configurations available for the SDTA-02 interface.
Table 1 – SDTA-02 Models and Part Numbers
DESCRIPTION MULTITEL PART #
SDTA-02, 240 VAC 3 phases M-4173*
SDTA-02, 600 VAC 3 phases M-4178*
*These models are CSA and CSA “US” approved.
For current measurement (0-1000A), current transformers are used to provide the 0-5 Amp
output signal required by the current input interface.
For voltage measurements (0 to 240 VAC and 0 to 600 VAC), three (3) voltage input
interfaces are provided, each with a 2-wire input connection.

SDTA-02 GENERAL INFORMATION
www.multitel.com [email protected]
6
Figure 1 - Physical Aspect

SDTA-02 SUMMARY OF SPECIFICATIONS
www.multitel.com [email protected]
7
2. SUMMARY OF SPECIFICATIONS
2.1 ELECTRICAL
Current consumption 150 mA / phase maximum
Current input range 0-5 A AC
Input impedance
Voltmeter 240 V : 2400 Ω
600 V : 6000 Ω
Ammeter 0.2 Ω
Output signal
Voltmeter 17 VAC, 2 nominal inputs (max.
28 VAC)
Ammeter 500 mVAC
2.2 ENVIRONMENTAL
Temperature
Operation 0ºC to 50ºC (32ºF to 122ºF)
Storage -40ºC to 70ºC (-40ºF to 158ºF)
Humidity
Operation 0 to 90%, non-condensing
Storage 0 to 95%, relative humidity
2.3 MECHANICAL
Height 43 cm (17”)
Width 25 cm (10”)
Depth 8 cm (3”)
Weight 3.2 kg (7 lbs)

SDTA-02 OPERATION
www.multitel.com [email protected]
8
3. OPERATION
3.1 GENERAL
The SDTA-02 is designed to transform high-AC currents and voltages into a current or
voltage scale compatible with analog channels on MULTITEL’s monitoring systems,
such as the RPM-1000/C, the MXP2 188 and the MIRADOR.
3.2 ANALOG CHANNEL SETUP
The SDTA-02 will send its measurements to several analog channels on your
MULTITEL monitoring system. In order to operate properly, those analog-input
channels need to be programmed with the proper scaling factor according to the AC
voltage or AC current input range (see Table 2). Please refer to the user’s manual of your
MULTITEL monitoring system for a complete description of steps to follow in order to
configure it accordingly.
Table 2 – Current and voltage data for analog channel configuration
INPUT RANGE SCALE INPUT SOURCE
0-240 VAC
0-600 VAC 565 1400 Voltage Voltage
3.3 MULTITEL MONITORING SYSTEM CONFIGURATION SETUP
The SDTA-02 has been set in the factory according to your needs. However, you should check
that setting is correct in order to avoid erratic readings (see the following table).

SDTA-02 OPERATION
www.multitel.com [email protected]
9
Table 3 – SDTA-02 Setup
PHASE JUMPER MXP2/MIRADOR RPM 1000/C
Phase A JP5 OFF ON
JP6 ON OFF
JP9 ON OFF
Phase B JP3 OFF ON
JP4 ON OFF
JP8 ON OFF
Phase C JP1 OFF ON
JP2 ON OFF
JP7 ON OFF

SDTA-02 INSTALLATION
www.multitel.com [email protected]
10
4. INSTALLATION
4.1 TOOLS AND EQUIPMENT
The following tools and test equipment are recommended:
-Safety glasses
-Crimping tools, Amp model: 90123-2 (Pliers and a soldering iron may also be
used).
-Pliers, tie-wraps, twin or friction tape
-Tarpaulin, canvas
-RMS multimeter with clamp-on meter
-Bx cable 14/2#
-Belden cable #9305 or #20 AWG stranded
NOTE:
Unpack and verify with the "Material list" that all the material is received and in good
condition.
4.2 MOUNTING THE SYSTEM
-Install the SDTA-02 as close as possible to the AC voltage or current source to be
measured, in order to minimize risk associated with the transmission of AC
voltage.
-Install the SDTA-02 on a flat wall surface.
-Do not install the SDTA-02 in the electrical box.
NOTE:
Protect the equipment from liquids.

SDTA-02 INSTALLATION
www.multitel.com [email protected]
11
Figure 2 - Wall Mount Installation of the SDTA-02
4.3 WIRING AND CONNECTING
IMPORTANT:
This Cabling and connecting section provides the general installation procedures and describes
how to interconnect and put into service a SDTA-02
CAUTION: MAINTAIN PERMANENT SEPARATION BETWEEN THE PRIMARY LINE
WIRING AND SECONDARY CIRCUITS.

SDTA-02 INSTALLATION
www.multitel.com [email protected]
12
4.3.1 GENERAL INFORMATION
-Read the following instructions before beginning the actual installation. It is
important to have a global view of the installation in order to install the equipment
properly.
-For more detail on the operation of MULTITEL monitoring systems, please refer
to their user’s manuals.
-Special precautions must be taken when handling current transformers (CTs).
Follow the manufacturer's instruction supplied with the CTs.
-Make sure that polarity dots on CTs is respected.
4.4 ALERNATIVE VOLTAGE MEASUREMENTS
Connect each breaker output (max. 15 Amp) for each phase (A, B, and C) to its
corresponding step down transformer input located in the SDTA-02 box using #14 AWG
wire.
NOTE:
Each step down transformer output is preconnected to the SDTA-02 circuit board.
-Connect the frame ground to the ground lug of the SDTA-02 located on top of
the circuit board using #14 AWG wire.
-Connect the corresponding pins of the J1 and J2 connectors on the MULTITEL
monitoring system analog channel inputs using #24 AWG wire or bigger.

SDTA-02 INSTALLATION
www.multitel.com [email protected]
13
Figure 3 - AC Current and Voltage Measurements

SDTA-02 INSTALLATION
www.multitel.com [email protected]
14
Figure 4 - Connector Definitions
J1 DEFINITION
PIN NAME USE TYPE PIN NAME USE TYP
E
1 IOUTC2 Ammeter phase C
common output lead OUT 5 IOUTB1 Ammeter phase B output lead OUT
2 IOUTC1 Ammeter phase C
output lead OUT 6 N.C. Not connected N.A.
3 N.C. Not connected N.A. 7 IOUTA2 Ammeter phase A common
output lead OUT
4 IOUTB2 Ammeter phase B
common output lead OUT 8 IOUTA1 Ammeter phase A output lead OUT
J2 DEFINITION
PIN NAME USE TYPE PIN NAME USE TYP
E
1 VOUTC2 Voltmeter phase C
common output lead OUT 5 VOUTB1 Voltmeter phase B output lead OUT
2 VOUTC1 Voltmeter phase C
output lead OUT 6 N.C. Not connected N.A.
3 N.C. Not connected N.A. 7 VOUTA2 Voltmeter phase A common
output lead OUT
4 VOUTB2 Voltmeter phase B
common output lead OUT 8 VOUTA1 Voltmeter phase A output lead OUT
J3 DEFINITION
PIN NAME USE TYPE PIN NAME USE TYP
E
1 IINA1 Phase A xducer's input
lead IN 5 IINB2 Phase B common input lead IN
2 IINA2 Phase A common input
lead IN 6 N.C. Not connected N.A.
3 N.C. Not connected N.A. 7 IINC1 Phase C xducer's input lead IN
4 IINB1 Phase B xducer's input
lead IN 8 IINC2 Phase C common input lead IN

SDTA-02 INSTALLATION
www.multitel.com [email protected]
15
J4 DEFINITION
PIN NAME USE TYPE PIN NAME USE TYPE
1 VINA1 Phase A VAC input
lead IN 5 VINB2 Phase B VAC common input lead IN
2 VINA2 Phase A VAC
common input lead IN 6 N.C. Non connected N.A.
3 N.C. Not connected N.A. 7 VINC1 Phase C VAC input lead IN
4 VINB1 Phase B VAC input
lead IN 8 VINC2 Phase C VAC common lead IN

SDTA-02 MAINTENANCE
www.multitel.com [email protected]
16
5. MAINTENANCE
5.1 CALIBRATION
The SDTA-02 does not need periodic maintenance. However, if the output values provided by
the SDTA-02 are erratic (after verification), the MULTITEL power monitoring system may be
programmed to compensate the differential in measurement.
Tools and/or equipment required for calibration:
-AC voltage -on RMS multimeter
-Terminal or portable computer to communicate with MULTITEL monitoring
system (emulation of VT-100, ANSI in some cases).
Potentiometer attribution of SDTA-02
P4 = AC VOLTAGE PHASE C
P5 = AC VOLTAGE PHASE B
P6 = AC VOLTAGE PHASE A
Follow the steps in order to calibrate the erratic measurement:
1. Configure the MULTITEL monitoring system's analog channel according to specifications.
2. Read the source value with an RMS multimeter or RMS clamp-on meter.
3. Adjust the corresponding potentiometer until the value displayed on the MULTITEL
monitoring system equals the value read with the RMS multimeter or RMS clamp-on meter.
4. Verify the reading and repeat step 2, 3 and 4 until both readings are the same.
5.2 TROUBLESHOOTING
5.2.1 General
This section lists some helpful hints on how to analyze problems that may occur. When the
problem is still not identified after reading this section, please contact a Customer Service
representative at 418-847-2255 or [email protected].
NOTE:
Before returning any defective unit, please make arrangements with your nearest Multitel
customer service representative.

SDTA-02 MAINTENANCE
www.multitel.com [email protected]
17
Table 4 – Diagnosis Path for Troubleshooting
SYMPTOM POSSIBLE CAUSE
No reading, the monitoring
system displays 0 volts. 1) The MULTITEL monitoring system’s analog channel is disabled (refer to the user manual for the corresponding
MULTITEL monitoring system).
2) The analog channel of your MULTITEL monitoring
system is not the correct type. Digital signal processing
must be true RMS.
3) There is no AC voltage or AC current present at the
SDTA-02 inputs.
4) Verify jumper settings (see Table 2).
5) The wiring is compliant with specifications in the SDTA-
02 connector definition .
6) If all of these possible causes are not true, your SDTA-02
may be defective (refer to Multitel’s Customer Service).
The reading is erratic.
1) The calibration is not adequate; refer to the calibration
section in this manual.
2) Verify that each input is in phase.
3) The scaling is not adequate.
If the SDTA-02 is defective in any way, please contact our customer service agent at 1-
418-847-2255,ext. 291 who will then issue you an RMA number so that you may return
the defective material. Please insure that the RMA number is clearly marked on the
package including our full address.
Our shipping address is:
MULTITEL Inc.
2500 Jean-Perrin Street
Québec, Qc.
G2C 1X1