Английский язык для судовых электромехаников - [27]

2c, 3a, 4d, 5f, 6h, 7e, 8g; 33 — a) 1,5, 6; b) 2, 7, 8; c) 3, 4, 8, 9.

SECTION 4 (4 + 2 + 5)

Ordering Directions and Standard Equipment

The first class period

Review of “AVR”, “Electric Drive of Boat Winches”, “Built-in Brakes”.

15

Topical content: Ordering directions and standard equipment.

Grammar item: Subjunctive Mood. 10

Text

Ordering Directions and Standard Equipment

1. For ordering electric drive equipment for ship’s deck machinery consult tables listing electric drives of various applications.

2. After determining the power rating of servo motors from the formula given in the catalogue select a power drive equipment with the nearest power rating and then make sure tiiat the control properties of the drive indicated on the mechanical characteristics suit the operating conditions of the electric equipment set.

3. The order for delivery of an electric equipment set or a separate motor must contain the following information:

name of the machinery (gear), kind of the current and the ship’s mains voltage;

type of the motor and its electrical characteristics as indicated in tables;

provision of a built-in disk brake and the operating conditions of the brake;

design version of the motor;

number of the free ends of the shaft (without a built-in brake); set number according to tables;

number and type of limit switches in the standard equipment; provision of a spares set;

provision of a Certificate issued by the USSR Register.

4. For ordering separate electrical apparatuses use the data given in tables.

5. The order for delivery of a magnetic controller and a cam controller must contain the following information:

application of the magnetic and cam controllers; class protection; rated current; number of startings per hour; type; operating duty; electric wear ' resistance level; control circuit voltage; voltage; settings of thermal protection relays.

6. An example of an order for an electric equipment set:

Electric equipment set for a mooring capstan, 380 V A. C. Motor MA 11 421-4/8 A, two-speed, power rating 7.0/5 6 kW, rotation speed 1400/650 rpm, 30/30 min duty.

Built-in brake type TNT 42, braking torque 12 daNm, 60 min duty. Design version-vertically mounted, flange type, without feet, M 302, for building into capstan head.

Set No. 8 acc. to Table 15.

One set of spare parts per standard equipment set.

With Certificate of the USSR Register.

7. The spare parts set for the electrical equipment comprises parts and assemblies which can be used for the repairs to be carried out on the ship. The spares sets are packed in sturdy wooden cases adopted for long storage on the ship.

8. The spares set comprises the following parts and assemblies: braking disks for brakes — 1 set; brake coil—1 set; brake spring—1 set; moving and stationary contacts of all types—1—3 sets; springs for apparatuses of all types—1—4 sets; apparatus coils—1 per design version; fuses — 2 sets: rectifiers — 1 set; vitrified resistors—1 per design version; cam assembly—1 —11 per design version.

The list of spare parts supplied with the given equipment is included in the set of technical documentation.

Exercises

Repeat the words after the teacher. Then read them by yourself paying attention to their Russian equivalents.

— формулирование заказа

-— приводное электрооборудование

— судовые палубные механизмы

— определить номинальную мощность исполнительных электродвигателей

— регулировочное свойство

— комплектное электрооборудование

— наименование, механизма

— род тока

— напряжение судовой сети

— необходимость получения поставки

— встроенный дисковый тормоз

ordering directions electric drive equipment

ship’s deck machinery to determine the power rating of servo motors

control property electric equipment set

name of the machinery (gear) kind of the current the ship’s mains voltage provision

built-in disk brake

operating condition design version set number

number and type of limit switches

spares set application class protection

number of startings per hour

operating duty

electric wear resistance level

control circuit voltage

settings of thermal protection

relay

mooring capstan

vertically mounted flange type without feet

building into capstan head parts and assemblies sturdy

vitrified resistor cam assembly

to include in the set of technical documentation

— режим работы

— конструктивное исполнение

— номер комплекта

— число и тип конечных выключателей

— комплект запчастей

— назначение

— степень защиты от внешних воздействий

— число включений в час

-— режим работы

— уровень электрической износоустойчивости

— напряжение цепи управления

— вставки тепловых реле защиты

— швартовый шпиль

— вертикально-фланцевый без лапок

— встраивание в головку шпиля

— детали и узлы

— прочный

— остеклованный резистор

— кулачковый элемент в сборе

— вкладывать в сопроводительную документацию

The second class period

5 10 Read the text carefully. Use ex. 4.

6 1

Read the words and point out those of the text:

a) regulator;

b) reference; c) version;

d) triggering; e) switch; f) wear; g) residual; h) level; i) amplifier; j) duty;