KR-351 Chilled Water Refrigeration Control System

ООО "ПриборКомБел"

Беларусь, 220070, г. Минск
ул. Ваупшасова д.10, к.152
Тел. + 375 17 238-44-44

The commonly-used control components of chilled water unit are mounted on the panel layout for easy learning.

Three-phase motor is used in place of compressor. The learner can proceed their hands-on practicing step by step from basics like interlocking circuit, motor start-up and control circuit of forward / reverse rotation, to the advanced exercises such as the complete control circuit of reciprocating / screw type chilled water unit, etc..

The used pressure component is triggered by direct vapor-pressurizing so the system can be close to the real one. On the contrary, the traditional components used for teaching in the past that have to be actuated by bolt or screwdriver can be discarded.

The input vapor-pressure, which is divided into 3 mimic pressures like low- pressure, high-pressure and oil pressure, can be used and adjusted separately so the learner would have clearer understanding of functionality of each component accordingly.

The E.O.C.R is built in inner circuit system to ensure the security and avoid the damage of equipment while wiring error.

The equipment is equipped with 3 magnetic switches, 3 auxiliary relays, 14 indicators, 2 timing relays, 3 different types switches and digital voltage / current meters. Moreover, the learner can use these components to take a lot of practice of low-voltage power control circuit and to test their own designed circuit.

Список экспериментов:

1. Knowledge of electric components
    Various commonly-used electric components are introduced in detail for teaching
    purpose including micro circuit breaker, PVPR, timing relay, auxiliary relay, magnetic
    contactor, thermal relay, current transformer, and voltage / current switch with 3-phase
    power.

2. Knowledge of protective equipment
    Not only the function description and instruction about the pressure protective switch that
    is commonly-used in chilled water unit is offered, but also the instruction manual and
    operational concept about the HLP, OLP, anti-freeze switch, and temperature switch, etc.
   The learner can understand the complete protection measures of chilled water unit.

3. Y-Δ manual lower-voltage start control circuit of 3-phase induction motor
    Students can realize the advantages of lower-voltage during practice and experience the
    speed change of motor by manual switch. Besides, students would be more familiar with
    the usage of relays by adopting other electric components.

4. Y-Y / Y-Δ circuit of chilled water unit
    Students can manipulate the Y-Y starting control circuit of smalland middle size chilled
    water unit as well as the lower-voltage starting circuit used in units above 7.5HP. They
    would be more familiar with the usage condition of various protective switches.

5. Circuit of chilled water unit
    The practice for circuit of chilled water unit is almost the same as that of the system in
    industry. Students would grasp full control concepts about chilled water unit by using the
    electric components and protective switches.

6. Pressure auto-start, manual-start switch circuit, chain circuit practice
    Students would gradually familiarize themself with the usage of components through the
    practice of basic chain circuit that is commonly-used in automatic control and pressure
    witches.

7. Forward / reverse rotation control circuit of three-phase induction motor, automatic
   forward / reverse rotation cycle control circuit
    With the practice of motor control circuit, students become skilled in motor usage and
    each electric component ; moreover, users can utilize this equipment to verify their own
   designed circuit.

Разработка сайта: ЧУП “Симпл Солюшнс”