Epoxy Resin Cast Pilfer Resistant Metering Cubicle For Indoor Installation ( 11KV – 33KV )

Technical Specification As Per IS : 2705

 

General Particulars

11KV

33 KV

Highest System Voltage( H.S.V.)

 

12 KV ( r.m.s.)

36 KV (r.m.s.)

Power frequency dry/ wet withstand voltage on primary winding for one minute

28 KV ( r.m.s.)

70 KV ( r.m.s.)

 

 

 

 

 

Lightning Impulse withstand Voltage ( 1.2 x 50 μs )

75 KV ( r.m.s.)

170 KV ( r.m.s.)

 

PD measuring Voltage / Permissible Voltage

7.6/50

23.0/50

System Particulars    

 

 

3 Phase 4 Wire with Isolated / Floating neutral as well as solidly earthed.          

3 Nos. CTs & 1 No. 3 - Phase PT

3 Nos. CTs & 3 Nos. 1 - Phase PT

 

3 Phase 4 Wire with Isolated / Floating neutral as well as solidly earthed.

2 Nos. CTs & 1 No. 3 - Phase PT

2 Nos. CTs & 3 Nos. 1 - Phase PT

Specific Particulars

 

Short Time Thermal Current (Ith)

As per customer requirement.

In general CT is to be specified with STF of 100 for 1 Sec. or STC (lth) equal to the system fault level whichever is lower. KA ( r.m.s. )

 

Output

10 VA to 100 VA for VT

5 VA to 30 VA for CT

 

Secondary Current (CT)         

1 Amp or 5 Amp

 

Secondary Voltage (VT)

110 Ph-Ph or 110/v3 V, Ph- Neutral

 

Primary Current (CT)

As per customer requirement.

(Upto 2000 Amp.)

 

Primary Voltage (VT)

11KV, 22KV, 33KV for 3-Phase VT

11/v3, 22/v3, 33/v3 for 1-Phase VT

Constructional / Salient Features

1
The metering cubicle consist of a pilfer resistant metering chamber on top of CT-PT chamber.
2
The metering chamber is designed to accommodate tri-vector meter of any make conforming to customer requirement.
3
Wiring in meter chamber is color with ferrules for easy identification.
4
The front door of the meter chamber has a glass window covering the glass with M. S. wire mesh for viewing the reading.
5
CT-PT Chamber accommodates epoxy resin cast CTs & VTs. It has ample clearances as per standard.
6
All the joints and hinges of the cubicle are welded internally making it inaccessible and pilfer resistant from outside.
7
Both the chambers are dust and vermin proof and have locking and sealing arrangement.
8
Any additional features can also be provided, if required by customer.
9
Dimensions of metering cubicle are conforming to specification given by various boards / corporations.