Answer Posted / habeebm

IP (Ingress Protection) codes define how well an enclosure
protects against the external environment.

As the number gets higher, the protection gets better.

The first digit defines the protection level
against "solids", the second against "liquids". You MUST
use both digits to define an enclosure.

For the first digit:
0 = No protection
1 = Protected against objects greater than 50 mm diameter
2 = Protected against objects greater than 12 mm diameter
3 = Protected against objects greater than 2.5 mm diameter
4 = Protected against objects greater than 1.0 mm diameter
5 = Dust protected
6 = Dust tight

For the second digit:
0 = Not protected
1 = Protected against dripping water (i.e. vertical plane)
2 = Protected against dripping water up to 15 degree angle
3 = Protected against spraying water
4 = Protected against splashing water
5 = Protected against water jets
6 = Protected against heavy seas
7 = Protected against effects of immersion
8 = Protected against submersion

hi frds, i m electrical engineer.can i get cdr for electrical engineer if u have then send me on my mail id its jayesh_ee88@yahoo.com.please help me frds

2206

---

Explain Creepage Distance of Insulator

2227

---

how many safety really of DG sets.

2253

---

draw the full wave and half wave circuit of 3 phase system and inverter circuit used in ups 

2415

---

what is photo voltic cell,& what are the materials associated with that?and any spcifications like volts/cm etc?

2030

---

Can any one provide the inspection procedure of MIMIC for VFD panel? Details: If someone wants to have a mimic in the VFD panel what are inputs considered for the mimic(like on,off,trip) whether we are able to add speed variation in the mimic(if so how can we get) and what are the parameters to be checked in the MIMIC during inspection?

2212

---

What is referred to the electron in the outer orbit?

1172

---

what will happen reduce the transformer voltage from 415v to 406v, is it save the energy,? are this methodis good to reduce the energy.?

1531

---

operation of protection relay watchdog contact?

2426

---

Define ampere

1321

---

standard earthing rating for power line..

2142

---

What is Control & Relay Panel? And Remote Control Center?

2231

---

what are the values of VRY,VYB,VBR,Vry,Vyb,Vbr,Vrn,Vyn,Vbn for Magenetic balance test of 100 KVA and 63 KVA Distribution transformer

2985

---

hi can any body send me syllabus of rrb electrical section engg... and past pepar also of any board...

2697

---

What was your role in the silicon evaluation/product ramp? What tools did you use?

1957

---