Detailed Product Description

1. Summary

CWH051-1J Concentrator is key device in low-voltage AMR system to collect and store data from PLC terminals (PLC energy meter, Collection terminals or modules etc.) over downlink channel automatically. Downlink channel is low-voltage power line or RS485 link. CWH051-1J Concentrator communicates with Master Station or HHU over uplink channel. Uplink channel is public communication network including GPRS, CDMA, PSTN, internet etc. CWH051-1J Concentrator adopts module design to match different communication way by using different communication module.

CWH051-1J Concentrator conforms to the requirements specified in DL-535-96 Power load control system protocol, DL/T6451997 Multi-function energy meter communication protocol and DL/T698-1999 Low voltage AMR system technical requirements

Master-slave Mode:

CWH051-1J Concentrator can be set to be master or slave. A master concentrator can connect to 4 slave concentrators at most via RS485 port. Slave concentrators communicate with Master Station via master concentrator channel.

2.1 Parameter setting

2.2 Data collecting and processing

2.3 Alarm and Meter rereading

2.4 Time synchronization

2.5 Meter reading at site

2.6 Self-diagnosis and abnormal info record

2.7 Remote control

2.8 Data store under no energy

2.9 Daily power line loss measurement

2.10 Store capacity

    A concentrator can manage 1000pcs of single phase energy meters and 200pcs of three phase energy meters. Daily energy data (60 days) frozen at 0:00 and Monthly billing energy data (6 months) frozen at 0:00 last day in a month are stored into special memory independently.

3. Electrical performance

3.1 Power supply

3.1.1 Three phase four wire power supply: A, B, C, N

3.1.2 Rated voltage: 220/380V ± 20%

3.1.3 Frequency: 50HZ ± 5%

3.1.4 Power burden: ≤30VA (apparent power); ≤10W (active power)

3.1.5 Operating normally when one or two phases break

3.2 Climatic Conditions

3.2.1 According to the installation sites, temperature and RH, climatic conditions are divided into three types:

Machine Room:  temperature:  +5∼+40,    RH≤75%

Indoors       temperature: 25∼+50, RH≤90%

Outdoors      temperature :45∼+70,   RH≤95%

3.3 Electromagnetic Compatibility (EMC)

3.3.1 Electrostatic discharge: 8KV

3.3.2 High-frequency electromagnetic fields: 10V/m

3.3.3 Electric Fast Transient Burst:4KV

3.3.4 Surge voltage:4KV

3.4 Channel request: 270KHz ± 15KHz

3.5 PLC communication range: 3 km over backbone line

3.6 Relay depth: 3 levels

3.7 Internal RTC accuracy:0.5s/d

3.8 Data store: 30 years

3.9 Dimension: 285×173×97mm (no cabinet)