MT/T 1041.4-2011 English PDF (MTT1041.4-2011)

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MT/T 1041.4-2011: Specification for adjustable speed electrical equipment of shearer. Part 4: Switched reluctance drive
MT/T 1041.4-2011
MT
COAL INDUSTRY STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
ICS 73.100.99
D 98
Record no.. 31844-2011
Specification for adjustable speed electrical equipment
of shearer – Part 4. Switched reluctance drive
ISSUED ON. APRIL 12, 2011
IMPLEMENTED ON. SEPTEMBER 1, 2011
Issued by. State Administration of Work Safety of the People's Republic
of China
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 5
4 Requirements... 5
5 Test methods ... 15
6 Inspection rules ... 24
7 Marking ... 26
Bibliography ... 28
Specification for adjustable speed electrical equipment
of shearer – Part 4. Switched reluctance drive
1 Scope
This Part of MT/T 1041 specifies the requirements, test methods, inspection rules and
marking for switched reluctance drive of shearer’s travel unit.
This Part applies to on-board and off-board switched reluctance drive of shearer’s
travel unit (hereinafter referred to as switched reluctance drive).
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition dated applies to this document. For
undated references, the latest edition of the referenced documents (including all
amendments) applies to this document.
GB/T 2423.4-2008, Environmental testing for electric and electronic products –
Part 2. Test method – Test Db. Damp heat, cyclic ( 12h+12h cycle)
GB 3836.1-2000, Electrical apparatus for explosive gas atmospheres – Part 1.
General requirements
GB 3836.2-2000, Electrical apparatus for explosive gas atmospheres – Part 2.
Flameproof enclosure d
GB 3836.4-2000, Electrical apparatus for explosive gas atmospheres – Part 4.
Intrinsic safety i
GB 4208-2008, Degrees of protection provided by enclosure (IP code)
GB 8286-2005, Mining flameproof movable substations
GB/T 12668.2-2002, Adjustable speed electrical power drive systems – Part 2.
General requirements – Rating specifications for low voltage adjustable frequency
a.c. power drive systems
GB/T 12668.3-2003, Adjustable speed electrical power dive systems – Part 3.
EMC product standard including specific test methods
4.3.1 Flameproof enclosure
4.3.1.1 The enclosure of switched reluctance drive shall be manufactured using steel
plates or cast steel.
4.3.1.2 The joining surfaces of the flameproof enclosure of switched reluctance drive
shall be as specified in Clause 5 of GB 3836.2-2000.
4.3.1.3 The flameproof performance of the enclosure of switched reluctance drive shall
be as specified in GB 3836.2-2000, which is capable of withstanding the enclosure
pressure test specified in 15.1, and the non-propagation explosion test of internal
ignition specified in 15.2, of GB 3836.2-2000.
4.3.1.4 The enclosure of switched reluctance drive shall be subjected to the static
pressure test according to 15.1.2.1 or 16.3 of GB 3836.2-2000, after finish machining.
There shall be no structural damage in the enclosure during the test, not any
permanent deformation which may influence the flameproof performance.
4.3.2 Cable entry device
4.3.2.1 The cable entry device of switched reluctance drive shall be as specified in
Clause 16 of GB 3836.1-2000 and Clause 12 of GB 3836.2-2000.
4.3.2.2 The cable entry device of switched reluctance drive shall be capable of
withstanding the clamping test specified in Annex D to GB 3836.1-2000 and the
flameproof cable entry device test specified in Annex D to GB 3836.2-2000.
4.3.2.3 The rubber sealing ring of the cable entry device of switched reluctance drive
shall be capable of withstanding the ageing test of elastic sealing ring materials
specified in Annex D to GB 3836.1-2000.
4.3.3 Terminal blocks and terminal compartments
4.3.3.1 The terminal compartments and the terminal blocks in the terminal
compartments of switch reluctance drive shall be as specified in Clause 14 of GB
3836.1-2000.
4.3.3.2 The insulated bushings of the terminal blocks of switched reluctance drive shall
be as specified in Clause 11 of GB 3836.1-2000.
4.3.4 Viewing window (display window) and clear parts of flameproof enclosure
4.3.4.1 The installation of the flameproof enclosure’s viewing window (display window)
and the materials of clear parts shall be as specified in Clause 8 of GB 3836.2-2000.
4.3.4.2 The clear parts shall be capable of withstanding the impact test specified in
23.4.3.1 of GB 3836.1-2000.
ne – the rotational speed when the output torque of switched reluctance drive is the
rated torque at the same given output rotational speed corresponding to n10, in r/min;
nemax – when the given output rotational speed is not greater than the rated rotational
speed, it is the rated rotational speed; when the given output rotational speed is greater
than the rated rotational speed, it is 120% of the rated rotational speed, in r/min.
4.4.3.4 Speed regulation properties of constant torque and constant power
Switched reluctance drive shall be designed that 100 r/min ~ the rated rotational speed
is the constant-torque speed regulation segment (corresponding to the working traction
speed) and that greater than the rated rotational speed ~ 120% of the rated rotational
speed is the constant power speed regulation segment (corresponding to the working
traction speed).
The speed regulation properties of switched reluctance drive within the specified speed
regulation range shall be as specified in Item 3 of Table 5 of MT/T 81-1998, i.e. within
the constant torque speed regulation segment of 100 r/min ~ the rated rotational speed,
its output torque shall achieve the rated torque (with the tolerance of + 8% ~ -3% of
the rated value), and the rotational speed shall decrease automatically when
exceeding the rated rotational speed; within the constant power speed regulation
segment above the rated rotational speed, its output power shall achieve the rated
power (with the tolerance of + 8% ~ -3% of the rated value), i.e. its output torque shall
achieve the torque converted from the rated power and output rotational speed, and
the rotational speed shall decrease automatically when exceeding the rated power.
4.4.4 Deceleration time
Switched reluctance drive shall be capable of reducing its motor’s rotational speed
from the rated rotational speed to zero within 10 s, and its d.c. return circuit will not
generate overvoltage alarms.
4.4.5 Double-quadrant operation
Switched reluctance drive shall have the double-quadrant operation function at least
and shall meet the requirements specified in 4.4.3 and 4.4.4 in the two directions of
forward direction (quadrant I) and reverse direction (quadrant III).
4.4.6 Four-quadrant operation
Switched reluctance drive of four-quadrant operation shall meet the requirements of
4.4.3 and 4.4.4 in quadrants I and III. In addition, it shall also have the re-generation
(braking) function in quadrants II and IV and specify its braking toque (braking power)
in relevant product standards. The speed regulation properties in the braking operating
state shall be as specified in 4.4.3; the braking toque (braking power) shall not be lower
than the specified value.
the test required by electromagnetic emission as specified in Clause 6 of GB 12668.3-
2003.
4.4.13 Cooling water channel
4.4.13.1 The cooling water channel of switch reluctance drive with the enclosure water
cooling shall be designed properly with adequate heat exchange, ensurin...