ROOF MOUNTED AC PACKAGE UNIT FOR LHB COACHES :
In response to the Indian Railway need for a AC Package Unit, Amit Engineers added another feather to its cap by achieving a major break through by its etali of the art technology employed and developed a unit which is energy efficient and reliable because they consist of 4 hermetically sealed compressor (two in each unit) with microprocessor-based controllers. Only 3 compressors function under normal tempera lines. The 4th acts as stand-by and works only during peak seasons.
Microprocessor Controller rotates the operation of all 4 compressors so that wear and tear is equally uniform. Compressors are started in sequence with time delay to reduce the peak demand of electricity during start up. To ensure perfect cooling comfort during monsoons, a special dehumidification package has been installed using compressor and heating cycles.
These units can be easily replaced by simply lifting if out from to roof. This unit is tested by RDSO.
SALIENT FEATURES :
 Micro-Controller based AC Package
Provision of Electron Beam Irradiated
Cable Protection System with IP-68 Protection.
Servo-Motor Controlled Fresh Air Damper for automatic Pre-cooling / Pre-heating.
Micro-Processor Control (with RS 232 Port) with fault Diagnostics and Data acquisition system.
Motors protected with Thermal switches.
Humidity Control through Hygrostat.
Condenser Fan impeller of engineering plastic.
Automatic Temperature setting based on ambient and switch over to Pre-cooling / Heating mode.
Improved air duct design for better air flow and cooling.
Toilets designed for discharge at pre-determined speeds to help station cleanliness.
TECHNICAL SPECIFICATIONS: |
1. |
Unit Type |
LHB Roof Mounted Modular |
2. |
Cooling Capacity |
21000 Kilo Calories per hours |
3. |
Power Source |
415 Volts AC 3 Phase 50 Hz |
4. |
Control Circuit |
110 Volts AC Single Phase 50 Hz |
5. |
Allowable voltage fluctuation |
+ 5% |
6. |
Total Power Input |
Approx. 12.8KW, 22A@ operating condition |
7. |
Air Flow Rate |
Approx. 4300 Cu Mtr/Hr. |
8. |
Refrigerant |
R-22, 3.5 kgs |
9. |
Compressor |
Copeland Scroll 2 sets each unit |
10. |
Condenser Motor |
1 HP, 415V, 50 Hz, 1400 rpm protection IP 55 |
11. |
Evaporator motor |
1.5 HP, 415V, 50 Hz, 1400 rpm protection IP 55 |
12. |
Heater |
6 KW = 0.4 X 15 nos. |
13. |
Dimensions |
L-2200 mm; W-2180mm;
H – 499 mm |
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