Metering Unit

LV Metering Cabinet
Product brochure
2016/4
Zhejiang Farady Powertech Co., Ltd.
ISO9001&ISO14001 certificated enterprise
LV Metering Cabinets are designed installed outdoors on wall or concrete. Which was made of not less than 1.2mm galvanized steel, and have a provision for mounting and aligning the meter to house and protect CT Operated Smart (AMR) kWh Meters
++++Product Standard
l IEC 335-1: Safety of household and similar electrical appliances. Part 1: General requirements.
l IEC 529: Degrees of protection provided by enclosures (IP code).
l IEC 947-1: Low-voltage switchgear and controlgear. Part 1: General rules.
++++Service conditions
Altitude (above sea level):1,000m
Maximum outdoor temperature:40°C
Minimum outdoor temperature:-25°C
Maximum monthly mean temperature:35°C
Annual mean temperature:22°C
Maximum relative humidity:60% to 96%
Maximum wind velocity :58km/h
Prevailing wind direction: SE and NW
Type of atmosphere: coastal
++++Technical Specification
System frequency |
50Hz |
Nominal system voltages |
400/230V |
Maximum LV voltage |
440/253V |
Minimum LV voltage |
374/215V |
Nominal short circuit levels: |
7.5kA |
Insulation levels: |
|
Power frequency |
3kV |
Neutral earthing arrangements: |
effectively earthed |
Creepage distance |
30mm/kV |
IP protection degree |
IP54 |
Housing material |
Galvanized Steel |
Housing wall thickness |
Not less than 1.2mm |
Front window material |
Transparent Polycarbonate |
CT ratio option |
100/200/300:5 200/400/600:5 400/600/800:5 or customized |
Dimension(WxDxH) in mm |
|
200/400/600:5 |
600*300*1450mm |
400/600/800:5 |
900*350*1450mm |
++++Product structure
LV Metering Cabinet made of not less than 1.2 mm sickness galvanized steel
have a Main Door for complete access of its interiors
The Door was provided by sealing rubber-padding to prevent ingression of moisture and dust.
Figure 1 shows salient features of the outer appearance of the LV Metering Cabinet.
Provision of access of the operating handle of the Isolating Circuit Breaker shall be made on the Main Door such that the Circuit Breaker can be operated without opening the LV Metering Cabinet.
The LV Metering Cabinet Door provided with a Locking Mechanism.
The Locking Mechanism shall be protected from access by a sealable metallic flap as shown in the in Figure 1.
There is provision of a Transparent Polycarbonate Window for Meter Reading
The Door shall have a galvanized steel handle for easy of opening.
The LV Metering Cabinet design with a Security Switch mounted in such a way that opening of the door causes the Switch to ‘Open’ and closing of the door causes the Switch to ‘Close’.
Flexible wires of adequate length to be extended from the Switch terminals to the meter position ready for connecting on the respective terminals of the AMR Meter.
The LV Metering Cabinet was design to mounting on a wall and on a concrete plinth.
Four (4) 8mm2 Roll-Bolts to be provided for each LV Metering Cabinet. The Roll-Bolts to be delivered inside the respective LV Metering Cabinet.
The LV Metering Cabinet also provided with a rugged Wireless Communication Antenna mounted on the top of the Cabinet. The antenna to be connected with a communication cord of at least six feet (6ft) long as a provision for connecting it to the AMR Meter.
The LV Metering Cabinet also provided with multi-tap Current Transformers
Provision of 12kV Surge Arrestors
The LV Metering Cabinet designed with 12kV Surge Arrestors for protection of the meter against lightning or switching surges.
The LV Metering Cabinet provided with a Test Terminal Block for easy meter testing during operations. The Test Terminal Block have a transparent cover and some provision of sealing shall be availed on the mounting studs.
The LV Metering Cabinet provided with 10Amps Miniature Circuit Breakers on the voltage circuit feeding the AMR Meter.
The LV Metering Cabinet shall be provided with an Isolating/Over-Load Mold Case Circuit Breaker
The Mold Case Circuit Breaker shall have a means of being remotely disconnected through a tripping-pulse issued by the AMR Meter.
++++Bill of Material
ITEM |
PRODUCT |
DESCRIPTION |
QTY |
1 |
Incomer MCCB |
630A MCCB, 3P circuit |
1 |
2 |
Current transformer |
Ring Type |
3 |
3 |
Test block |
Test Block Front Connection transparent Cover |
1 |
4 |
Surge protection device |
3P+N Imax 45kA 400VAC Mono Block |
1 |
5 |
MCB |
1P, 10kA , 10A |
3 |
6 |
Cable Gland |
M32 |
2 |
7 |
Transparent window |
UV resistant-PC |
1 |
8 |
Padlock |
L-Handle with padlock able lock |
1 |
9 |
Keylock |
Quarter turn key lock with cylinder |
2 |
10 |
GSM antenna |
screw type, with 1meter cable + FME female connector |
1 |
11 |
Mircro switch |
Microswitch, short hinge roller leve |
1 |
++++Before order pls clarify of your requirement with our tech