Answer / karunakar

Metal-Clad Switchgear is an assembly of units characterized
by the following features:
The main interrupting device is removable and arranged with
a mechanism for moving it
physically between connected and disconnected positions. It
is equipped with self-aligning and
self-coupling primary and secondary disconnecting devices.
The interrupting devices, buses, voltage transformers, and
control power transformers, are
completely enclosed by grounded metal barriers, which have
no intentional openings between
compartments. A metal barrier in front of the interrupting
device ensures that when, in the
connecting position, no live parts are exposed by the
opening of an enclosure door.
All live parts are enclosed within grounded metal
compartments.
The Metal eclosed switchgear assembly consists of multiple
metal-enclosed, vertical sections. Normally the end
sections are designed to allow for installation of future
sections. Each vertical section consists of up to four
individually enclosed breaker or auxiliary compartments.
Compartments are sized to provide uniform height of each
switchgear assembly.

Various components such as circuit breakers,
instrumentation and control equipment, transformers,
relays, three-phase bus work, all internal wiring,
connectors, and other supporting equipment are included in
each assembly. These units can be directly coupled to 480V
motor control centers if desired

Answer / gurumurthy.k

The Simple reply is " A metal clad can be a metal enclosed
but a metal enclosed can not be metal clad". Which
means , the Metal enclosed need not have a compartments
within its structure, can have fixed interupting medium and
and safety related issues. These are applicable for a low
coltage swicth board but metal clad is more apt for medium
coltage.

How to Calculate IKW(input kilowatt)of a Chiller plant

2 Answers   Voltas,

---

why semiconductor fuse used in drive ,not ordinary?

4 Answers   EAP, Essar,

---

what is pure resistive circuit and pure inductive circuit

1 Answers  

---

i have DEEE certificate in vinyaka misson unive rsity. is a INGNO if possible get the electrical C licences in Tamil nadu?

0 Answers  

---

what questions will be asked for 11/33KV licence interview APSEB hyderabad. Can any one share question and answers.

0 Answers  

---

The power dissipated by a resistor of 10ohm when a current of 2A passes through it is:(a) 0.4W(b) 20W(c) 40W(d) 200W

2 Answers  

---

which circuit takes max. load & which circuit takes min. load i.e. SERIES CIRCUIT OR PARALLEL CIRCUIT??

3 Answers  

---

what is the step by step formula for calculating bus bar phase and neutral size of a panel board.suppose the incomer of panel board is 100A..???step by step answer please

1 Answers  

---

what is plunger and what's the use of it in motor alignment?

0 Answers   CLZ, Yahoo,

---

What are your personal skills and abilities for such a Master Course and your possible preparation to undertake this course?

0 Answers  

---

what type of motor are there in megger how they work.

2 Answers  

---

what are the standard values for resistances(Megger testing) between L&N, L&E and N&E (L=Live,N=Neutral, E=Earth)?

1 Answers  

---