- Short circuit loop parameters measurements:
- measurements of short circuit loop impedance in networks with rated voltage: 220/380V, 230V/400V, 240/415V and frequency 45...65Hz,
- measurements of short circuit loop impedance with current 15mA without tripping the circuit breaker. - Testing the RCD breakers of AC, A types:
- testing of prompt, short-delay (general) and selective RCDs for the rated current values 10, 30, 100, 300, 500mA,
- IA measurement
- RE and UB measurement without tripping the circuit breaker,
- extended RCD test function AUTO, with measurement of ZL-PE with current 15mA - measurement of IA and tA during one RCD tripping. - Detection of the replacement L and N in the socket and automatic conversion in the meter.
- Low voltage resistance measurements of protective circuits and junctions:
- measurement of resistance with 200 mA current
- calibration of test leads - possibility of using any length of test leads,
- low current resistance measurement with accoustic signalling - Rapid check for the correct connection of PE wire using touch electrode.
- Measurement of mains voltage and frequency.
- Power supply from LR6 batteries or NiMH accumulators (option).
- The device meets the requirements of IEC 61557 standard.
The device meets the requirements of EMC standards EN 61326-1:2006 and EN 61326-2-2:2006.
Electric safety:
- type of insulation: double, according to EN 61010-1 and IEC 61557
- measurement category: IV 300V (III 600V) according to EN 61010-1
- protection class acc. to EN 60529: IP67
Other technical data:
- dimentions: 220 x 98 x 58mm
- weight: ~1kg
- Auto OFF time: 300, 600, 900 second
- number of measurements Z and RCD (for NiMH batteries): >5000 (2 per minute)
Short circuit loop impedance measurement ZL-PE, ZL-N, ZL-L
Measurment using 7,6/13,3A current – Measurement range according to
IEC 61557: 0,13...1999Ω
(for 1,2m lead) and 0,19...1999Ω (for WS-01 and WS-04).
| Display range | Resolution | Accuracy |
| 0,00...19,99Ω | 0,01Ω | ±(5% m.v. + 3 dgt) |
| 20,0...199,9Ω | 0,1Ω | |
| 200...1999Ω | 1Ω |
• Nominal work voltage: UnL-N/ UnL-L: 220/380V, 230/400V, 240/415V,
• Voltage operating range: 100…264V (for ZL-PE i ZL-N) and 100…440V (for ZL-L),
• Nominal network frequency fn: 50Hz, 60Hz,
• Max. test current: 23A (230V), 44A (440V),
• PE terminal connection corectores check with the help of touch electrode
Readings of fault loop impedance R and fault loop reactance XL
| Display range | Resolution | Accuracy |
| 0,00...19,99Ω | 0,01Ω | ±(5% m.v. + 5 digits) of ZS value |
| 20,0...199,9Ω | 0,1Ω |
calculated and displayed for ZS<200Ω.
Short circuit loop impedance ZL-PE in mode RCD – without RCD tripping
Measurement using <15mA,current measurement range in accordance with IEC 61557: 0,51...1999,9Ω
| Display range | Resolution | Accuracy |
| 0,00...19,99Ω | 0,01Ω | ±(6% m.v. + 10 dgt) |
| 20,0...199,9Ω | 0,1Ω | ±(6% m.v. + 5 dgt) |
| 200...1999Ω | 1Ω |
• test without tripping the RCD for IΔn ≥ 30mA,
• nominal work voltage: Un: 220V, 230V, 240V,
• voltage operating range:180...270V,
• frequency operating range fn: 50Hz, 60Hz
• PE terminal connection correctness check with the help of touch electrode
Readings of fault loop impedance R and fault loop reactance XL (without tripping the RCD)
| Display range | Resolution | Accuracy |
| 0,00...19,99Ω | 0,01Ω | ±(6% m.v + 10 dgt) of ZS value |
| 20,0...199,9Ω | 0,1Ω | ±(6% m.v + 5 dgt) of ZS value |
• calculated and displayed for ZS<200Ω.
RCD parameters test (voltage range 180...270V):
RCD tripping test and measurment of tripping time tA (for tA function)
| Breaker Type | Test Current Multiplier | Range | Resolution | Accuracy |
| Standard | 0,5*IΔn | 0...300ms | 1 ms |
|
| 1*IΔn | ||||
| 2*IΔn | 0...150ms | |||
| 5*IΔn | 0...40ms | |||
| Selective | 0,5*IΔn | 0...500ms | ||
| 1*IΔn | ||||
| 2*IΔn | 0...200ms | |||
| 5*IΔn | 0...150ms |
• Precision of the differential current: 0,5*IΔn:-8...0% for 1*IΔn, 2*IΔn, 5*IΔn: 0...8%
Voltage measurement
| Range | Range | Accuracy |
| 0,0V...299,99V | 0,1V | ±(2% m.v. + 6 dgt) |
| 300V...500V | 1V | ±(2% m.v + 2 dgt) |
Frequency measurement
| Range | Range | Accuracy |
| 45,0V...65,0Hz | 0,1Hz | ±(1% m.v. + 1 dgt) |
Touch voltage measurement referred to the rated residual current (UB)
| Range | Resolution | Test Current | Accuracy |
| 0..9,9V | 0,1V | 0,4 x IΔn | 10% m.v. ± 5 dgt |
| 10,0..99,9V | 0...15% m.v. |
Measurementof the RCD disconection current IA for sine waveform testing current
| Selected Current | Range | Resolution | Test Current | Accuracy |
| 10mA | 3,3...10,0mA | 0,1mA | 0,3 x IΔn...1,0 x IΔn | ±5%IΔn |
| 30mA | 9,0...30,0mA | |||
| 100mA | 33...100mA | 1mA | ||
| 300mA | 90...300mA | |||
| 500mA | 150...500mA |
RCD IA tripping current measurement for unidirectional pulsating residual current
| Selected Current | Range | Resolution | Test Current | Accuracy |
| 10mA | 4...20,0mA | 0,1mA | 0,35xIΔn..2,0xIΔn | ±10%IΔn |
| 30mA | 12,0...42,0mA | 0,35xIΔn..1,4xIΔn | ||
| 100mA | 40,0...140mA | 1mA | ||
| 300mA | 120...420mA |
• Measurement is possible for a positive or negative forced leakage current.
Low voltage test of the circuit and insulation continuity
Measurement range in accordance with IEC61557:0,12...400Ω
Test of PE wire continuity using a ±200mA current
| Range | Resolution | Accuracy |
| 0,00...19,99Ω | 0,01Ω | ±(2% m.v + 3 dgt) |
| 20,0...199,9Ω | 0,1Ω | |
| 200...400Ω | 1Ω |
• Test current at R<2Ω: min. 200mA,
• Autocalibration of test leads
• Measurements for both polarizations of the current
„m.v.” measured value.
