Our Paper plant uses 380 V for LV distribution. We have recently purchased a second hand Paper Mill from Australia where Power distribution was 11 KV, 3.3KV and 415 V. The total plant load was 15 MW. In all 30 Transformers 11KV/415V and 1000 motors will be installed in this Plant. Changing to...
A turbo generator rated for 60 hz is required to generate at 50 hz. Assuming all utility eqipment are changed to 50 hz, and monitoring, metering and protection settings are availible for 50 hz, will changing governer setting to slower rpm and adjusting excitation be able to deliver rated power...
For repairing worn out shaft at bearing seat and worn out bearing housing on end shields of motors 30-300kW, use hot metal spray OR put a sleeve. How does cost compare to performance.
A 250 TPD (400mpm) Kraft Paper Machine required drive upgrade because existing analog DC sectional drive (17 sections - 2500 KW) has no spares. Motors are OK. Loading is 50-70%. Options are DC to DC, DC to AC (common DC bus) DC to AC (common AC bus) Your votes please! Specific question 1. 5-7%...
I am looking for a Data Logger cum Recorder for our analogue DC drives with the dual purpose of fault locating by history recording (trigger based?) as well as tuning by high speed paper / paperless recording. I have used Yokogawa OR100 series Oscilloscope and DARWIN PC based loggers. What is...
I am looking for a Data Logger cum Recorder for our analogue DC drives with the dual purpose of fault locating by history recording (trigger based?) as well as tuning by high speed paper / paperless recording. I have used Yokogawa OR100 series Oscilloscope and DARWIN PC based loggers. What is...
An old Yankee tissue machine requires revamp from DC to AC drives. Due to lack of time and space it is proposed to use individual AC feeders and a common PLC, instead of a common DC bus. Total 15 motors 6x100kW, 9x34kW. What are advantage / disadvantage
3 Wire Paper machine, 500mpm(max) uses analogue sectional DC drives & PLC for draw control. It is required to do away with the PLC and speed regulator due to lack of spares. A new PLC will handle draw, HMI, AND speed regulation. Tacho is 300 ppr for 1500rpm motor. Is speed regulation of 0.3mpm...
We have many spare Rotors in good condition for our DC Motors but there is no tag or any information about them. Most rotors have been identified by dimensions. There is one rotor that fits in 100kW / 1750 & 1150 rpm motor as well as 75 kW / 1750 rpm motor. Is this rotor freely interchangeable...
A separately excited 185 kW DC motor has an optional series winding. Manufacturer says it is to be used to enhance speed regulation in a Master application and speed drooping in a slave, but only when both motors are fed from one converter, otherwise there is no distinction. In single drive...
DC Motor running a paper machine line shaft is 185Kw,400V,490A,1150rpm. Normal running data is 380VDC,320A,1000rpm. It was replaced by 167KW,400V,449A,1750rpm. Amps reached to 450 at only 500rpm. Motor drive pulley dia was reduced and rpm could be raised to 800 at full load. A day later someone...
