Protection and Control Devices
for Substations and Industrial Facilities
RZL-05
RZL-05 device series is multi-purpose intellectual electronic device (IED) for power system elements protection, automation, control, event logging, fault parameters recording and indication.
RZL-05 devises have flexible programmable logic functions and hardware configuration. RZL-05 provides a great function kit for overhead and cable electrical line networks.
Another RZL-05 purpose is transformer, motor or generator back-up protection.
RZL-05 series includes basic and advanced device configurations to fit best your objectives. Basic configuration relays contain general protection function kit, depending on purpose.
RZL-05 grants maximum reliability due to a number of back-up software and hardware modules solutions.
Devices are integratable to SCADA control network with the RS-485 interface and Modbus RTU data transfer protocol.
The RZL-05 series includes next device modifications:
- RZL-05М - Simplefied Low-Cost Protection and Control Devices for Substations and Switchgears 1 - 45 kV;
- RZL-05.А - Advanced Protection and Control Devices for Substations and Switchgears 1 - 45 kV;
- RZL-05.В - Protection and Control Devices for Substations and Switchgears 1 - 45 kV;
- RZL-05.F - Outgoing Feeder Protection and Control;
- RZL-05.ТН - Voltage Transformers Monitoring
- RZL-05.RPN - Automatic Control of Transformers Under Loading
- RZL-05.CS - Central Alarm Devices
RZL-05 series devices have basic, standard and advanced typical configurations of hardware composition and logic features.
RZL-05 features
| ANSI | Functions |
|---|---|
| 50/51 | Overcurrent protection (OCP) |
| 50V/51V | Voltage-restrained OCP |
| Blocking OCP on external command | |
| 67 | Directional OCP |
| 46 | Negative-sequence current protection |
| 50HS | Switch-onto-fault protection |
| 96 | Busbar Instantaneous trip lockout |
| 50N/51N | Zero-sequence OCP (unidirectional ground-fault protection) |
| 67N | Directional ground-fault protection (directional zero-sequence power protection) |
| 67N | Zero-sequence overvoltage protection |
| 59 | Overvoltage protection |
| 27 | Undervoltage protection with a current-permissive instance |
| 47 | Negative-sequence overvoltage protection |
| 46BC | Phase conductor break protection (on negative-sequence current and negative-to-positive sequence current ratio modes) |
| Intertripping on remote protection device signal with current-permissive instance | |
| Arc-fault protection with phase current and zero-sequence current restrain instance | |
| Current permissive negative-sequence undervoltage protection | |
| Auxiliary circuit overvoltage protection | |
| Voltage transformer primary side ferroresonance protection | |
| Motor thermal protection | |
| Voltage and/or auxiliary transformers supervision, based on different voltage channels instantaneous values compare | |
| 79 | Auto-reclosing |
| 81L | Automatic underfrequency load shedding |
| 50BF | HV Breaker failure back-up |
| Automatic load transfer | |
| Automatic initial scheme restoration (after load transfer followed by fault HV input restoration) | |
| Breaker closing circuits failure supervision | |
| 38/49T | Temperature monitoring via thermal sensor |
| 30 | Alarm on protection operation performed |
| 30 | Internal failure alarm (watchdog) |
| 74TCS | Trip circuits supervision |
| Voltage transformer secondary circuits supervision | |
| Binary signal input-to-output supervision | |
| Parameter setting groups toggle on binary input activation | |
| Parallel supervision of two voltage transformers circuits | |
| Breaker control | |
| Event logging | |
| Non-volatile log memory | |
| 600 sec total memory oscillograph | |
| Parameters recording start on binary input activation |
RZL-05 parameters
| Parameter | Standard configuration | Advanced configuration |
|---|---|---|
| Rated thermal current (current circuits power supply), А: continuous / 1 s duration / 60 s duration |
10 / 250 / 20 | 10 / 250 / 20 |
| Measuring zero-sequence current input parameters | ||
| Rated 3Іо value, А | 1 | 1 |
| Number of inputs | 1 | 1 |
| Measurable current range (with rated accuracy), А | 0,01-4,00 | 0,01-4,00 |
| Maximum measurable current value, А | 20 | 20 |
| Relative error, % | ±5; | ±5 |
| Rated thermal current, А: continuous / 1 s duration / 60 s duration |
1,5 / 100 / 10 | 1,5 / 100 / 10 |
| Measuring voltage input parameters | ||
| Rated phase-to-ground voltage, V | 100 | 100 |
| Number of inputs | 4 | 4 |
| Measurable voltage range (with rated accuracy), V | 1 - 130 | 1 - 130 |
| Maximum measurable voltage value, V | 150 | 150 |
| Relative phase-to-ground voltage measurement error, % | ±2 | ±2 |
| Relative zero-sequence voltage measurement error, % | ±3 | ±3 |
| Rated thermal (voltage (calculated by induced current), V: continuous / 1 s duration / 60 s duration |
130 / 300 / 252 | 130 / 300 / 252 |
| Absolute 3Іо to 3Uо angular error, deg | ±2 | ±2 |
| Temperature sensor input parameters | ||
| Measurable temperature range (with rated accuracy), °С | 0-100 | 0-100 |
| Maximum measurable temperature value, °С: | 125 | 125 |
| Relative temperature measurement error, % | 2 (0,5% RZL-05.RPN) | 2 |
| Binary inputs parameters | ||
| Number of inputs | 9 | 17 |
| Rated AC, DC voltage, V | 220 | 220 |
| Response voltage level, V | 132 -176 | 132 -176 |
| Unresponse voltage level, V: | 0 – 88 | 0 – 88 |
| Current consumption , mА: - energizing instantaneous inrush value - continuous |
20 4 |
20 4 |
| Response time, ms | 40 | 40 |
| Maximum voltage, V | 310 | 310 |
| Dry contact binary inputs parameters | ||
| Number of inputs | 3 | 3 |
| Signal type | «dry contact» | «dry contact» |
| Dry contact circuits source voltage, V, DC | 24 | 24 |
| Binary outputs parameters | ||
| Number of binary outputs: - normally open (high current-trip ability) - normally open (common) - toggle |
13 1 8 4 |
17 1 13 3 |
| Maximum tripping DC voltage, V | 300 | 300 |
| Maximum tripping AC voltage, V | 400 | 400 |
| Maximum continuous current, А | 10 (output К1 - 30А) | 10 (output К1 - 30А) |
| Maximum AC trip current, А | 8 (output К1 - 16А) | 8 (output К1 - 16А) |
| Maximum DC trip current in L-R circuits with time constant ≤ 20 ms, А | 0,3 (output К1 - 0,6А) | 0,3 (output К1 - 0,6А) |
| Connection | ||
| Interface | RS-485 | RS-485 |
| Protocol | MODBUS RTU | MODBUS RTU |
| Connection speed | 9600, 19200, 38400, 78600 | 1200, 9600, 19200, 38400, 78600, 115200 |