PRE 431S Pro & PRE 661 & PRE 431 Protective Relay Test System
Protective relay test systems are designed for testing, commissioning and maintenance of protection relays in substations, power plants and industrial electrical systems. Supporting comprehensive voltage and current output with high measurement accuracy, they provide efficient solutions for relay verification, fault simulation and system commissioning.
Section 1 : PRE 431S Pro Hand-held Relay Test System

| Voltage generators | Current generators | ||||
| Output range | 4-phase AC(L-N) | 4×0~125V | Output range | 3-phase AC(L‐N) | 3×0~12.5A |
| 2-phase AC(L-L) | 2×0~250V | 1-channel DC(L-N) | 1×0~±6A | ||
| 1-channel DC(L-N) | 1×0~±125V |
Power
|
4-phase AC | 4×30VA | |
| 1-channel DC(L-L) | 1×0~250V | 1-channel DC | 1×30VA | ||
| Power | 4-phase AC | 4×30VA |
Inaccuracy AC
|
<2mA,at 0~0.5A | |
| 1-channel DC | 1×30VA | ±0.2%,at 0.5~12.5A | |||
| Inaccuracy AC | <10mV, at 0~2V |
Inaccuracy DC
|
<5mA,at 0~1.0A | ||
| ±0.2%, at 2~125V | ±0.2%,at 1~6.0A | ||||
| Inaccuracy DC | <10mV, at 0~5V |
Output time
|
0~3A | Continuous | |
| ±0.2%, at 5~125V | 3~10A | 60s | |||
| Output time | Continuous | 10~12.5A | 30s | ||
| Resolution | 10mV | Resolution | 10mA | ||
| Binary inputs | General | ||||
| Number | 2 | Frequency | Range | 10~1000Hz | |
| Modes | Potential-sensing(o~250VDC) or potential-free (automatic recognition) |
Resolution | 0.001Hz | ||
| Max measuring time | Infinite | Phase | Angle range | -360°~360° | |
| Binary outputs | Accuracy | <0.2°(at 50/60Hz) | |||
| Number | 2 | Resolution | 0.1° | ||
| Type | Quick output contacts | Time measurement | Range | 0.1ms~3600s | |
| Update rate | 100µs | Resolution | 0.1ms | ||
| Breaking capacity | Vmax: 250VDC / Imax: 0.3A | Others | |||
| Power supply | Environmental conditions | Operating temperature: -10℃~50℃ | |||
| Input charge voltage | 100~240VAC | Humidity: ≤90% | |||
| Nominal frequency | 50 / 60Hz | PC connection | Ethernet, 10M / 100M | ||
| Permissible frequency | 45~65Hz | Ground socket (earth) | 4mm banana socket | ||
| Charging voltage | 16.8V | Net size | 270×190×60mm | ||
| Battery | 12.8Ah | Net weight | 3.2kg | ||

Section 2 : PRE 661 6 Current and 6 Voltage Relay Test System
Introduction

| Voltage generators | Current generators | ||||
|
Output range
(effective value)
|
6-phase AC (L-N)
|
6×0~120V
|
Output range
(effective value)
|
6-phase AC (L-N)
|
6×0~30A
|
|
2-phase AC (L-L)
|
2×0~240V
|
1-phase AC (6L-L)
|
1×0~180A
|
||
|
DC (L-N)
|
6×0~±160V
|
1-phase AC (L-L)
|
1×0~30A
|
||
|
DC (L-L)
|
2×0~±320V
|
DC (L-N)
|
6×0~±10A
|
||
| Power |
AC (L-N)
|
80VA
|
DC (3L-N)
|
1×0~±30A
|
|
|
AC (L-L)
|
100VA
|
Power
|
AC (L-N)
|
450VA
|
|
|
DC (L-N)
|
70VA
|
DC (L-N)
|
200VA
|
||
|
DC (L-L)
|
140VA
|
Accuracy
|
AC output
|
≤0.1%
|
|
|
Accuracy
|
AC output
|
≤0.1%
|
DC output
|
≤0.2%
|
|
|
DC output
|
≤0.2%
|
Output time
|
0~10A
|
continuous
|
|
| Output time |
Continuous output
|
10~20A
|
30s
|
||
| Resolution |
10mV
|
20~30A
|
10s
|
||
|
General
|
30A
|
5s
|
|||
|
Frequency
|
Range
|
0~1200Hz
|
Resolution
|
1mA
|
|
|
Resolution
|
0.001Hz
|
Others
|
|||
|
Phase
|
Angle range
|
-360°~360°
|
PC connection
|
Ethernet, 10M/100M
|
|
|
Resolution
|
0.1°
|
Ground socket(earth)
|
4mm banana socket
|
||
|
Time measurement
|
Range
|
0.1ms~9999s
|
Net Size
|
400×200×402mm
|
|
|
Resolution
|
0.1ms
|
Net Weight
|
20kg
|
||
|
Binary inputs
|
Binary outputs
|
||||
|
Number
|
10 (each fully isolated)
|
Number
|
8 | ||
|
Modes
|
Potential-free or potential-sensing (automatic recognition)
|
Type
|
4 (1-4) relay and 4 (5-8) quick output contacts
|
||
|
Max measuring time
|
Infinite
|
Breaking capacity
|
Vmax: 250VAC/ Imax: 0.5A
|
||
|
Auxiliary DC supply
|
Vmax: 250VdC/ Imax: 0.3A
|
||||
|
Voltage
|
110V/220V (switch between)
|
Power supply
|
|||
|
Power
|
>100W
|
Nominal input voltage
|
175~260VAC
|
||
|
Nominal frequency
|
50/60Hz
|
||||
Section 3 :PRE 431 3 Current and 4 Voltage Relay Test System
