Specifications
Enquiry Specification for Wagon Tippler with Side Arm Charger and Associated works
NRO/CON/WT/533
EPI – New Delhi Volume-2B, Rev.0 Page 46 of 63
3.0 Type of connection -Three full wave diode rectifiers supplied by phase
shifted, three phase AC to provide a fixed DC
voltage. -DC bus inductor on all ratings -DC link
capacitors -Insulated Gate Bipolar Transistor
(IGBT) power section, shall be rated for variable /
constant torque applications. The power section
shall use vector dispersal pulsewidth modulated
(PWM) IGBT gate control algorithm and soft
switching IGBT’s to reduce motor terminal dv/dt
and allow longer cable length from drive to motor
without output filters. -The Main Control Board
shall be the same for all ratings to optimize spare
parts stocking and exchange -Common control
connection for all ratings.
4.0 Overload capacity -110% of the rated current for 1 minute , 30
seconds at 150% (with inverse characteristics
proportional to time) for variable torque
applications . Repetition interval shall not be less
than 9 minutes -150% of the rated current for 1
minute overload , 30 seconds at 200% (with
inverse characteristics proportional to time) and
200% of rated current for 0.5 sec. for constant
torque applications . Repetition interval shall not
be less than 60 minutes .
5.0 Efficiency More than 97% or better at full speed and full
load.
6.0 Input power supply -415 V AC +10% & -15% -3 phase . -50 Hz + / -6
% -4 wire neutral earthed system .
7.0 Voltage variation -Voltage variation of (+/-) 0.1 % with an input
variation of +10% -15%. -Steady state regulation
of (+/-) 0.25% guaranteed against 100 to 200 %
load disturbance and + 6% & -6% input supply
frequency variation. -The drive should be
designed to operate on an AC supply, which may
contain line notching, and up to 10% harmonic
distortion.
8.0 Environmental conditions
8.1 Storage ambient
temperature range
Upto to 70ºC (-40ºto 158ºF).
8.2 Operating ambient
temperature range
without derating.
IP42 & above : 0ºC to 50ºC (0ºto 122ºF)
8.3 Relative humidity Upto 100% non-condensing.
8.4 Operating elevation
Up to 1000 Meters (3,300ft) without derating.
8.5 Shock 15G peak for 11ms duration
8.6 Vibrations Suitable to withstand vibrations more than 0.5g.
9.0 Reference
9.1 Input reference O +/-10 V DC / 0 – 10 V DC / 4 – 20 mA .