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Outgoing Feeder Distance Protection
RZL-05.DP

Application

RZL-05.DP devices intended for outgoing feeder distance protection and have four stages with independent time-delay characteristics. Protection doesn't operate in case of secondary voltage circuits fault and in case of nearby fault. Protection has circular impedance characteristic which sets with five settings that define the centre of circle, it’s radius and angles of initial and end of operation sector as it’s shown on a Figure 1. Protection controls each of three phase-to-phase impedance.

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Functions

Distance protection, 4 stages.
Directional and nondirectional overcurrent protection, 4 stages.
Switch onto faultacceleration.
Logical selectivity busbar protection.
Overload protection.
Directional and nondirectional ground fault protection, 3 stages.
Undervoltage protection, 2 stages.
Overvoltage protection.
Phase unbalance phase-loss protection (negative-sequence).
Arc-fault protection.
Overheat protection.
Breaker failure protection.
Breaker auto-reclosing.
Automatic load-transfer.
Secondary voltage circuitsperformance supervision.
Phase-to-phase fault location.
Breaker control.
User-defined logic.
Solid ambient conditions withstand (-40...+55 °C).
Multi-lingual LCD interface: English, Ukrainian, Russian.

RZL-05.DP - circular impedance characteristics — Figure 1. Circular impedance characteristics of distance protection stages.

Distance protection parameters

Stages number	4
Impedance of secondary fault circuit loop setting range, RZ	0,05 - 200 Ω
Setting interval of checkzone Z impedance	0,01 Ω
Each checkzone circle centerpoint coordinates setting range (0r,0x)	0 - 200 Ω
Angles a and b setting range	0 - 360 deg
Setting interval ofa and b angles	1 deg
Time-delay setting range	0 - 10 s
Interval of time-delay setting	0,01 s
Minimum protection operating current	0,5 А
Maximum protection operating current	150 A
Minimum protection operating voltage	10 V
Device operating time-lag	35 ms

Technical parameters

Parameters	RZL-05.DP -
Parameters	1	3	11	13
Power supply units parameters
Operating voltage range, DC / AC, 50 Hz	90 – 360 V / 80 – 254 V
Power-on availability time	0,3 s
Operating supply interruption	0,5 s
Independent supply channels (auxiliary voltage circuits)	2
Device burden	2x13 Wt
Current input parameters
Rated input current	5 A
Line current inputs number	3
Measurable current range	0,1 - 150,0 A
Maximum monitored current value	200 A
Basic relative measurement accuracy	±2 %
Current thermal withstand, continuous /1 s	10 / 500 A
Zero-sequence current input parameters
Rated zero-sequence input current (3Io)	1 A
Line current inputs number	1
Measurable current range	0,01 - 4,00 A
Maximum monitored current value	10 A
Current thermal withstand, continuous /1 s	10 / 100 A
Voltage input parameters
Phase voltage	100 V
Number of inputs	4
Rated voltage range	1 - 150 V
Maximum continuous voltage	180 V
Linear voltages measurement accuracy	±2 %
3Uo voltage measurement accuracy	±3 %
Voltage thermal withstand, continuous /1 s	150 / 300 V
Measurement accuracy of phase angles between current 3Іо and voltage 3Uо	±3 deg
Thermal sensor input parameters
Number of inputs	1
Temperature range	0- 100 °C
Binary input parameters
Number of inputs	17
Rated AC, DC voltage	220 V
Response voltage level	132 - 176 V
Response time	not less 40 ms
Current consumption at 220 V: - power-on current - continuous	20 mA 4 mA
Maximum voltage, continuous	310 V
Dry contact binary input parameters
Number of inputs	3
Dry contact circuits source voltage	DC 24 V
Binary output parameters
Number of binary outputs	17
Max AC voltage trip	400 V
Maximum AC current	5 A (10 A for K1 output)
Max DC voltage trip	300 V
Maximum DC LR-circuit trip current, time constant τ≤20 ms	0,2 A (0,4 A for K1 output)
Arc fault protection sensors parameters
Number of inputs	-	3	-	3
Response threshold	900 – 1700 lux
Communication
PC communication interface	USB - 1 pcs
Automated Control System communication interface	RS-485 - 2 pcs		RS-485 - 1 pcs Ethernet (RJ45)
Data Protocol	MODBUS RTU		MODBUS TCP
Connection speed	9600...115200 bps		10/100 Mbps
Other
Mounting type	Flush
Device dimensions (WxHxD)	265x240x195 mm
LED indicators total / configurable	20 / 16
Operating ambient temperature range	- 40 to + 55 °C
Maximum Humidity at 25 °C	98 %
Insulation resistance, more than	50 MΩ
Insulation overvoltage withstand, Instantaneous / continuous	2,0 kV , 50 Hz 5,0 kV pulse
Weight, less then	10 kg