RZR®-AS
Automatic machine RZR®-Mikro is a microprosessor unit for automatic turning on of reserve voltage (ATR/SZR) and automatic return to basic supply (ARB/APZ) of a switching station 0.4 kV.
Application
Automatic machine RZR®-Mikro ensures constant power supply in LV networks in public buildings, apartment buildings and industrial establishments. The unit is manufactured in three basic versions:
• 533 – adapted for work in a configuration 5 – switches, 3 sections and 3 power sources *,
• 322 – adapted for work in a configuration 3 – switches, 2 sections and 2 power sources *,
• 212 – adapted for work in a configuration 2 – switches, 1 section and 2 power sources *.
The unit performs switchings:
• ATR – AC dump,
• ARB – after voltage return,
Characteristic features
• Manufactured with use of a modern microprocessor RISC type.
• Small dimensions.
• Comfortable and simple maintenance.
• Low power consumption.
• High resistance to interferences in input and output circuits.
• It is possible to:
- have a direct control of commutation elements (switches, contactors),
- set parameters,
- change working configuration,
- monitor switching station status (switches and voltages) on LCD,
- outer interlocking of the unit with an external contact,
- inside interlocking of the unit preset in the configuration of functioning,
- produce a special version for individual customer’s demand.
Operation
Automatic machine RZR®-Mikro [533] controls the presence of three voltages and status of 5 switches. Depending on the position of switches and presence of voltages the unit carries out switching procedure which leads to the condition according to the diagram below:
Switching diagram of the unit RZR®-Mikro [322].
Switching diagram of the unit RZR®-Mikro [212].
When the power is supplied by a UPS after the failure of U1, U2, U3 voltages the unit turns off all switches. (Cycle with blocking option). In a cycle of automatic return to basic power supply ARB (return cycle) the unit is working when a failure voltage appears. This switching can be set aside.
Structure
The automatic unit is located in a metal housing adopted for installation on a DIN rail. The front plate of the unit contains:
• LCD,
• indicator showing the presence of a power supply voltage,
• indicator showing external lock,
• four momentary buttons to change the LCD page, operation parameters and unit configuration
The upper and lower part of the housing has outlets to connect the unit with a controlled system. The housing contains the following main components of the unit:
• power supply,
• output relays,
• separator systems,
• LCD,
• front plate block (keyboard and signal lights),
• microprocessor system for measurement and control.
Download a catalogue| Basic technical data | ||
| Three-phase measurement rated voltage Un | 400 V AC, 50 Hz | |
| Rated supply voltage Uz | AC 230 V
+ 10%, - 20% |
|
| Threshold voltage of controlled phases | 180 V AC ± 10% | |
| Range of adjustment of boot-time delay:
• from AC dump • from voltage return • turn off switch • turn on switch |
(0,0 ÷ 10,0) s co 0,1 s (0,0 ÷ 10,0) s co 0,1 s (0,0 ÷ 10,0) s co 0,1 s (0,0 ÷ 10,0) s co 0,1 s |
|
| Duration of output pulses
for control of switches |
0,5 s | |
| Deviation of time elements | ≤ 1% | |
| Class of time elements with regard to dispersion | 1 | |
| Additional deviation caused by influence of supply voltage alterations and temperature | ± 1% | |
| Range of working temperature | (-5 ÷ +55)°C | |
| Allowable relative humidity | 90% (without condensation) | |
| Contact capacity:
• maximum start current • rated current of contact load – in AC1 category – in DC1 category • durable • maximum voltage of contacts AC/DC |
15 A
6 A przy 250 V AC 6 A / 24 V DC 6 A 250 V / 300 V |
|
| Rated power consumption | ≤ 10 W | |
| Durability of connection of output relays | > 0,6 x 105 | |
| Dimensions | (250 x 105 x 73) mm | |
| Weight | ok. 1,0 kg | |
| Protection level | IP 40 | |
