Thetford Armature Multi Phases MT-3 User manual

Manufactured by Thetford Armature Inc.

Multi-Phases 1
Table of contents Page
Introduction 2
Please read this guide carefully 2
1 Installation procedure 2
1.1 Assembly 2
1.2 Connecting the device 3
2 Usage 5
2.1 Starting up the phase-converter 5
2.2 Operating the phase-converter 5
2.3 Do not OVERLOAD the phase-converter 6
3 Technical specifications of the products 6
3.1 Current (amperage) of the phase-converters at full capacity 6
3.2 Capacity of the phase-converters 7
4 Multi-Phases Warranty 8

Multi-Phases 2
Introduction
We thank you for purchasing this product manufactured by Thetford Armature Inc.
This model is a high-end electric phase-converter, designed to provide electrical
power to operate three-phase electric loads from a single-phase power source.
Read this guide carefully
Should you not understand any part of this guide, do not hesitate to contact us to be
informed of the start-up, the operating and the maintenance procedures.
In this guide and on the stickers affixed to the phase-converter, the WARNING
block is used to alert employees of special instructions concerning specific
operations that could prove hazardous if not executed properly or with caution.
The operator is responsible for the correct and safe use of the equipment. We
strongly urge the operator to read this guide and to fully understand all the
instructions before using the equipment.
1- Installation procedure
1.1- Assembly:
Put the phase-converter on a solid surface and fix it securely using the four
holes of the base. Rubbers can be used between the phase-converter's base
and the surface. Using these rubbers will reduce vibration and noise.
WARNING
Never use the equipment if it is not properly secured.

Multi-Phases 3
1.2-Connecting the device
It is recommended to use a switch to start and stop the phase-converter and to use a
junction box.
A) Identify the A, B, and C terminals in the junction box (see Figure 1).
B) Connect lines L1 and L2 of the single-phase power supply respectively to A and
B terminals of the junction box.
C) Connect the phase-converter's T1, T2 and T3 terminals (see Figure 2)
respectively to the A, B and C terminals of the junction box.
D) Connect the three-phase load(s) to the A, B and C terminals of the junction box.
E) It is preferable to connect the single-phase controls (starter, automaton, etc.)
between the A and B terminals of the junction box.
Figure 1

Multi-Phases 4
Figure 2
The three-phase power generated by the phase-converter has a voltage of 240-volt.
A transformer must be used to obtain a dierent voltage .The recommended type
of transformer is a Delta-Star transformer.
WARNING
NEVER CONNECT THE H0 or X0 OF A TRANSFORMER'S PRIMARY
TO THIS EQUIPMENT.
When using an autotransformer, the neutral H0 or X0 must never be connected to
the phase-converter. When using a Delta-Star transformer, the neutral H0 or X0
must never be connected to the phase-converter.
WARNING
Use overload protection as required under the electrical regulations for the
location of the installation

Multi-Phases 5
2 Utilisation
2.1 Starting the phase-converter
The phase-converter is started when the T1 and T2 terminals are energized by the
single-phase input. Use of a switch is recommended. Sometimes the phase-
converter does not start. When this occurs, simply turn the switch off and try again.
If this situation persists, please contact your representative.
WARNING
Phase-converters are not designed to execute frequent start-ups so it is
recommended to start them no more than once or twice a day.
WARNING
Always start up the phase-converter by itself, without any load
Always ensure that the input voltage loss is not greater than 10% when starting up
the phase-converter. If a loss greater10% is observed, check the adequacy of the
electrical installation..
2.2 Operation
Once the phase-converter is in operation, it is possible that the voltage between the
T2 and T3 terminals will be higher. This variance is normal and will correct itself
when a load is applied. Always refer to section 3 when changes are made during
installation to avoid overloading the device.

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2.3 Do not OVERLOAD the phase-converter
Overloading a phase-converter above its rated capacity can damage the phase-
converter and the connected electrical devices. Respect the following instructions
to avoid overloading the unit:
- Calculate the total HP of all the electrical devices to be connected at the same
time. The total must not exceed the phase-converter's capacity (see section 3).
- Identify the HP of the most powerful motor and ensure it does not exceed the
phase-converter's capacity (see section 3).
- If the phase-converter is connected to resistive loads (heating or a welding
machine):
1- Determine the current (amperage) used by the equipment
2- Multiply this number by the operating voltage to get the Watts
(volts x amperes = watts)
3- Multiply the Watts x 1.5 and then ensure it does not exceed
the equipment's capacity (see section 3)
3 Technical specifications of the products
3.1 Current (amperage) of the phase-converters at full capacity (100%)
Model
Single-phase
input (A)
Three-phase
output (A)
Start-up (A)
MT-3
15
9
25
MT-6
22
13
44
MT-9
40
23
58
MT-12
50
30
72
MT-15
65
38
92
MT-21
90
53
140
MT-30
130
76
183
MT-45
200
115
288
MT-60
260
153
360
MT-75
330
191
420

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3.2 Capacity of Phase- converters
Model
HP Max
HP Total
Watts Max
Watts Total
MT-3
1
3
746
2 240
MT-6
2
6
1 500
4 500
MT-9
3
9
2 250
6 700
MT-12
4
12
3 000
9 000
MT-15
5
15
3 700
11 100
MT-21
7.5
21
5 600
16 800
MT-30
10
30
7 500
22 400
MT-45
15
45
11 200
33 500
MT-60
20
60
15 000
45 000
MT-75
25
75
18 650
56 000

Multi-Phases 8
4. Multi- Phases Warranty
Thetford Armature Inc. warrants the buyer that Multi-Phases is free from defects in
material and workmanship, under normal use and maintenance for a period of
12 months from the date of purchase. This limited warranty is only on condition
that the buyer uses Multi-Phases in accordance with the instructions accompanying
the product.
This limited warranty is invalid if the Multi-Phases converter is subjected to an
improper use, or other causes not arising from a defect in materials or
workmanship.
Thetford Armature Inc. will not repair nor replace the Multi-Phases and will not be
liable for physical damage or personal injury resulting from an attempt (by the
buyer, user or an unauthorized repair service) to repair, tune-up, assemble or alter
any Multi-Phases, its electrical circuits, controls or other components.
Should the Multi-Phases does not comply with the terms of the warranty, the buyer
may, aside from any other procedure, return it to Thetford Armature Inc. at the
address below, postage and insurance paid. Thetford Armature Inc. will replace or
repair it at its option, at no cost to the user buyer. The acceptance by Thetford
Armature Inc. of any Multi-Phases thus returned will not be considered an
admission that the Multi-Phases is defective. It will be returned to the buyer at the
buyer's expenses.
Important: For this warranty to be valid, Thetford Armature Inc. must have a
proof of the original purchase date of the Multi-Phases.
No warranty, express or limited, including the implied warranties of compliance
with sale and ability, will exceed a period of 12 months from the original purchase
date of the product.
Thetford Armature Inc. will be in no way responsible for any loss of income,
incidental or consequential costs, or expenses where this product is not covered by
no warranty as indicated herein. This limited warranty explicitly supersedes any
warranty, express or implied.

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The limits of liability for any loss of income, incidental or consequential costs,
expenses or damages will not be aected by any breach of the essential purpose of
this limited warranty.
Thetford Armature Inc
1224 rue du Parc, Thetford-Mines
G6H 2N1
1-800-624-5583
www.thetfordarmature.com
www.multi-phases.ca