Electrical engineering for mining

contents• Electrical engineering for mining• Motors• Pumps• Fans• Switchgears• Converters• Automation• Communication• Lighting fittings• Junction box

Motors

Motors - Standard• Electric motors type 4KTCR and 3KTCR are suitable for working in coal mines.

The motors have strong mechanical construction with low repair requirements and easy maintenance.

• Welded enclosure from frame size 180 - 315• Cast iron enclosure from frame size 71 - 160• TEFC - totally enclosed fan cooling• Connection with socket or terminal box• Three positions of terminal box – top, right or left side• Fed by frequency converter with forced ventilation• Voltage: 380-1140V; 50Hz• Power: 0,18 – 200 kW• Standard speed: 2 poles (2980min-1), 4 poles (1480min-1)• Other speeds on request

Motors - Heavy working conditions

• Electric motors type 3KTCP and 4KTCP are suitable for heavy working conditions in coal mines. The motors has strenghtened mechanical construction and very good electrical characteristic

• Welded enclosure• Able to work even filled up with coal• TEFC - totaly enclosed fan cooling• Fed by frequency converter with forced ventilation• Design to be switch on and off frequently• Ratio betwen starting current and normal current is < 5• Ratio betwen starting torque and normal torque is > 2• Voltage: 380-1140V; 50Hz• Power: 22 – 200 kW• Standard speed: 2 poles (2980min-1), 4 poles (1480min-1) (other speeds on

request)

Motors

• Due to the specific operating conditions in mining, motors being deployed have to fulfil high demands. Explosion protected three-phase, asynchronous motors designed by BARTEC according to the “flameproof enclosure” type of protection provide optimum preconditions for this kind of application. They are particularly used in mining, gate roads as well as auxiliarily ventilated mine openings.

• BARTEC mining motors are characterised by their:• high capability at narrow dimensions and leight weights• low energy consumption due to high efficiency• mechanical strength even under extreme conditions• consistent cooling due to optimised cooling system

PumpsSubmersible drainage pump type BS 2075 offer wide variety of

application in dangerous areas in large mining projects.• For pumping abrasive and corosive liqiuds containing solids

and fibers and sludges• Touble-free, tough and easy to use• Construction-cast iron• Monitoring and control system for protection and operation

without level switches• Voltage: 380 and 500V; 50Hz• Power: 2,9/3,75kW• Max. depth of sink is 20m

FansMining fans series AV are robust construction with high levels of

realibility and performance for ventilating coal mines, corridors and large rooms.

• Flame proof motors• Anti sparking rings• Range: 315, 400 and 600mm• High volume of air flow up to 2,56m3/s, with two fans

combined up to 5,02m3/s• Rated pressure up to 2350 Pa• Voltage: 380, 500V AC• Power: 1,1 – 2x7,5kW

Switchgears

Low Voltage• Flame proof enclosures series OT and TSV are robust

construction and easy for use and maintenance.• Welded enclosure• Motor protective switch up to 132kW, 500V• Circuit breaker up to 630A, 500V• Lighting transformer up to 5kVA, 220V AC• Drawable execution• Electronic units for monitoring electrical resistance

Medium Voltage• Our medium-voltage control equipment operates

transformers, motors and special consumers in potentially explosive mine openings. They can be supplied for the following voltage levels: 3,3kV, 5kV, 6kV and 10kV. They are characterized by

• flameproof equipment compartment with central locking system

• terminal compartment in flameproof or increased safety• standard enclosure with a volume of 540, 600 or 1000 litres• special constructions on request

Cable bushing

• For electrical connection beetwen flame proof »d« and increased safety »e« enclosure. The insulation body is made of cheramic.

• 750V and 1100V• 16 – 630A• Max. ambient temperature 130°C• Different shapes of terminals• Standard threads M16x1,5 – M42x1,5

ElectronicsElectronic units type NIMR-220, ZZS-500/1000, NZKT-1B and

IZS-42B are used in enegetics systems network IT to control insulation in network system. Electronic is based on high quality components with high degree of reliability.

• NIMR-220 Continually monitors the isolation resistance of an IT system network for lighting with nominal voltage 220V AC

• ZZS-500/1000 Off-line earth fault relay for IT system network with nominal voltage 500V AC and 1000V AC

• NZKT-1B Protective conducor (SL-ÜL) monitoring relay• IZS-42B Continually monitors the isolation resistance of pilot

network with nominal voltage 42V AC

ConverterOur new drive technology is consistently focusing on state-of-the-art converters for variable

control and regulation of rotational speed. This concept offers very smart solutions for many problems, e.g. soft start of belt conveyors.

• Input voltage 1000V• Rated power output 300kVA, 415kVA or 660kVA• Rated shaft power 255kW, 321kW or 511kW• Nominal efficiency > 97%Features• Energy train-compliant standard dimensions• Four-quadrant drive • Energy recovery• Suitable for standard mining motors• Control concept without tacho generator for balance-proof operation• Special controls for conveyor systems• Slip compensation • Water cooling

Automation• Automation of the different operating processes marks far-reaching progress

in the mining industry. The logical advancement is a consistent networking with the end-to-end communication and control concept developed by BARTEC. On the basis of the Profibus and Ethernet technology, components and complete systems designed by BARTEC provide an optimum flow of information in the entire mining system – a milestone in process automation and a new benchmark in mining.

• BARTEC provides trend-setting quality for professional automation underground and aboveground. Our Automation Technology not only provides central devices but also decentralised peripheral devices for every case of operation. The intrinsically safe PROFIBUS enables devices to communicate among each other.

The classic device• Module Power Supply Eex em (ib) I

- AC 42-230 V (+25% / -30%), 40-60Hz- DC 50-290 V (+25% / -30%)- DC 5.6 (± 2%); 3.2 A

Motherboard and support board- Control processor SP90- Communication processor- PROFIBUS-ASIC`s SPC2 and ASPC2- Memory (RAM and EPROM)- Battery back-up and On-Board-Flash-EPROM- Watch module

Interfaces- 4 slots for FSK-media modules 8SX9012-0HA10- 1 slot for DUST3964R-media module 8SX9012-0HB10- 1 service interface (local PG)

The Professional device• Modular PC-system in PC104 format for all control applications in case of high

environmental influences• CPU Dx486 | Pentium | AMD-K6• RAM memory on request• Bulk memory 2,5" HD or IDE-Flash-Disk • Removable drive 3,5" FD and/or CD-ROM• Data links (fixed) Ethernet RS 232• Data links (option) PROFIBUS DP|FMS|DPS|FDL

PROFIBUS M-EEx I (SIMDAS DP) CAN open InterBus MODNET DUST 3964 R | BB 22244 L120 Stop and lock equipment

• Operating system WINDOWS NT | QNX

The underground work placeMining-PCTypes of protection EEx de [ia] IEC type examination certificate IBExU 99ATEX1026Working storage 128 MBHard disk 3.25 GBGraphics controller XGA, 65536 coloursDisplay 14,5", TFT colour display

1028 x 768 pixelInterfaces com 1, com 3,

com 4: RS-232com 2: RS-422Option RS 232

Network Ethernet, Novell NE2000 compatibleSupply voltage AC 230V

(85V - 265V), 47 to 63 HzAmbient temperature From 0° C to 40° CKeyboard Type of protection EEx ia IEC type examination certificate IBExU 99ATEX1129Type of protection IP 65Ambient temperature From 0° C to 40° C

Communication

Telephones• Communucation device for use in hazardous areas

in coal mines. Telephone is resistant to large temperature differences, air humidity, dust and strong mechanicla wear and tear.

• Housing glassfiber reinforced polyester• 16 keys – stainless steel V4A• Ringing sound 90dB/1m• 10 different call tones

Interphones• Voice communication, signalling and start-up warning

along conveyors on faces and roadways as well as the stopping and interlocking of the drive installations to prevent restarting.

• Modular system design: Arrangement of the components between main station and end unit in any order

• Sturdy, reliable connection by 8-pole plug-in connector with capacitive interlocking mechanism

• Interface according to BS22444 or Profibus specification• Integration of BARTEC automation station IPC E0x

Horns

The signal horn was develpoed for warning, calling and indicating purposes in hazardous areas in coal mines. The construction is low weight and highly robust.

• Housing glassfiber reinforced polyester• Small dimensions• Two different sounds• 100db/1m• 24V AC/DC, 230V AC

Lighting fittings

Fluorescent light fittings• Enclosure of lighting fitting is made by sheet metal and

protective diffuser by polycarbonate. The e130 Ex protected light fittings for bi-pin fluorescent lamps are fitted with an electronic balast.

• 2x18 and 2x36W, 230V AC• Integrated isolating switches• Easy lamp replacement• Through wiring• Terminals 6x10mm²

Mining cap lamps type RSN-5

Mining cap lamps type RSN-5 has lead acid batteries and headpiece with two bulbs. Batteries has long life time (1000 cycles) as main halogen bulb (300hour).

• Life time 1000 cycles• Two bulbs• Working time of main halogen bulb 13h• Working time of auxiliary bulb 28h• Transparent enclosure of batteries• Charging units for 2, 10 or 51 lamps

Mining cap lamps type RSN-7Mining cap lamps type RSN-7 with dry NiCd or NiMh cells. They

do not require maintenance. Small sizes and small weight.• Type of protection I M1 EEx ia I in I M2 EEx ib I• Average battery life time 1500 cycles• Minimum LED light emission 100.000 h• Autonomy at small light up to 90 h• Small weight 900g• Charging and discharging fully controlled with microcontroller• Charging and status of lamp monitored on PC• Charging rack and accessories

Mining cap lamps type RSN-8Mining cap lamps type RSN-8 with dry NiCd or NiMh cells. They

do not require maintenance. Small sizes and small weight.• Type of protection I M1 EEx ia I in I M2 EEx ib I• Average battery life time 1500 cycles• Minimum LED light emission 100.000 h• four different luminous intensity• 6° in 15° light source• Charging and discharging fully controlled with microcontroller• Charging and status of lamp monitored on PC• Charging rack and accessories

Junction Boxes

Low Voltage• Junction boxes offer safe protection even when

they exposed to extreme environmental conditions or high mechanical stress.

• For EExe and EExi circuit• Enclosures stell sheet 3mm• DIN rail terminals and special clamps• Terminals 0,5 – 185mm²• Voltage 1000V

Middle Voltage

• Junction boxes series PV-3 for extend middle voltage cables without any special tools or reisin. On the cover is glass window for visual inspection.

• Enclosures: stell sheet 3mm• Cheramic terminals• Terminals: 70 and 95mm²• Voltage: 6000V