Description
Short circuit loop parameters measurements:
- measurements of short circuit loop impedance in networks with rated voltage: 220/380 V, 230 V/400 V, 240/415 V and frequency 45…65 Hz,
- measurements of short circuit loop impedance with current 15 mA 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, 500 mA,
- IA measurement
- RE and UB measurement without tripping the circuit breaker,
- extended RCD test function AUTO, with measurement of ZL-PE with current 15 mA – 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.
MPI-502 is equipment to perform complete test and verify on electrical installations according to the most common safety standards (IEC 61557, VDE 0100, BS7671).
Short circuit loop impedance measurement ZL-PE, ZL-N, ZL-L
Measurment using 7,6/13,3 A current – Measurement range according to
IEC 61557: 0,13…1999 Ω
(for 1,2 m lead) and 0,19…1999 Ω (for WS-01 and WS-04).
| Display range | Resolution | Accuracy |
| 0,00…19,99 Ω | 0,01 Ω | ±(5% m.v. + 3 dgt) |
| 20,0…199,9 Ω | 0,1 Ω | |
| 200…1999 Ω | 1 Ω |
- Nominal work voltage: UnL-N/ UnL-L: 220/380 V, 230/400 V, 240/415 V,
- Voltage operating range: 100…264 V (for ZL-PE i ZL-N) and 100…440 V (for ZL-L),
- Nominal network frequency fn: 50 Hz, 60 Hz,
- Max. test current: 23 A (230 V), 44 A (440 V),
- 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…19,99 Ω | 0,01 Ω | ±(5% m.v. + 5 digits) of ZS value |
| 20,0…199,9 Ω | 0,1 Ω |
calculated and displayed for ZS<200 Ω.
Short circuit loop impedance ZL-PE in mode RCD – without RCD tripping
Measurement using <15 mA,current measurement range in accordance with IEC 61557: 0,51…1999,9 Ω
| Display range | Resolution | Accuracy |
| 0,00…19,99 Ω | 0,01 Ω | ±(6% m.v. + 10 dgt) |
| 20,0…199,9 Ω | 0,1 Ω | ±(6% m.v. + 5 dgt) |
| 200…1999 Ω | 1 Ω |
- test without tripping the RCD for IΔn ≥ 30 mA,
- nominal work voltage: Un: 220 V, 230 V, 240 V,
- voltage operating range:180…270 V,
- frequency operating range fn: 50 Hz, 60 Hz
- 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…19,99 Ω | 0,01 Ω | ±(6% m.v + 10 dgt) of ZS value |
| 20,0…199,9 Ω | 0,1 Ω | ±(6% m.v + 5 dgt) of ZS value |
- calculated and displayed for ZS<200 Ω.
RCD parameters test (voltage range 180…270 V):
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…300 ms | 1 ms | ± (2% m.v. + 2 dgt)
|
| 1*IΔn | ||||
| 2*IΔn | 0…150 ms | |||
| 5*IΔn | 0…40 ms | |||
| Selective | 0,5*IΔn | 0…500 ms | ||
| 1*IΔn | ||||
| 2*IΔn | 0…200 ms | |||
| 5*IΔn | 0…150 ms |
- Precision of the differential current: 0,5*IΔn:-8…0% for 1*IΔn, 2*IΔn, 5*IΔn: 0…8%
Voltage measurement
| Range | Range | Accuracy |
| 0,0 V…299,99 V | 0,1 V | ±(2% m.v. + 6 dgt) |
| 300 V…500 V | 1 V | ±(2% m.v + 2 dgt) |
Frequency measurement
| Range | Range | Accuracy |
| 45,0 V…65,0 Hz | 0,1 Hz | ±(1% m.v. + 1 dgt) |
Touch voltage measurement referred to the rated residual current (UB)
| Range | Resolution | Test Current | Accuracy |
| 0..9,9 V | 0,1 V | 0,4 x IΔn | 10% m.v. ± 5 dgt |
| 10,0..99,9 V | 0…15% m.v. |
Measurementof the RCD disconection current IA for sine waveform testing current
| Selected Current | Range | Resolution | Test Current | Accuracy |
| 10 mA | 3,3…10,0 mA | 0,1 mA | 0,3 x IΔn…1,0 x IΔn | ±5%IΔn |
| 30 mA | 9,0…30,0 mA | |||
| 100 mA | 33…100 mA | 1 mA | ||
| 300 mA | 90…300 mA | |||
| 500 mA | 150…500 mA |
- It is posible to start the measurement from the positive or negative half of the forced leaking current
RCD IA tripping current measurement for unidirectional pulsating residual current
| Selected Current | Range | Resolution | Test Current | Accuracy |
| 10 mA | 4…20,0 mA | 0,1 mA | 0,35xIΔn..2,0xIΔn | ±10%IΔn |
| 30 mA | 12,0…42,0 mA | 0,35xIΔn..1,4xIΔn | ||
| 100 mA | 40,0…140 mA | 1 mA | ||
| 300 mA | 120…420 mA |
- 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…400 Ω
Test of PE wire continuity using a ±200 mA current
| Range | Resolution | Accuracy |
| 0,00…19,99 Ω | 0,01 Ω | ±(2% m.v + 3 dgt) |
| 20,0…199,9 Ω | 0,1 Ω | |
| 200…400 Ω | 1 Ω |
- Voltage on open terminals: 4…9 V,
- Test current at R<2 Ω: min. 200 mA,
- Autocalibration of test leads
- Measurements for both polarizations of the current
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 300 V (III 600 V) according to EN 61010 – 1
- protection class acc. to EN 60529: IP67
Other technical data:
- dimentions: 220 x 98 x 58 mm
- weight: ~1 kg
- Auto OFF time: 300, 600, 900 second
- number of measurements Z and RCD (for NiMH batteries): >5000 (2 per minute)
„m.v.” measured value.
Data Sheet
Jason –
Awesome quality tester that produces accurate readings time after time. Well worth the investment