The CRA160EH series relay protection tester is a next-generation instrument developed by Northrop Grumman. It features a modular design, a built-in large-capacity lithium battery, and is compact and lightweight with extensive testing functions. The 9-inch high-definition touch LCD screen ensures easy on-site operation. Equipped with high-performance current and voltage amplifiers, it offers superior output precision and stability. This tester meets the needs for relay protection and automatic device testing, applicable for installation, debugging, secondary defect elimination, and maintenance in substations, power plants, distribution networks, rail transit, and industrial enterprises.
CRA160EH series relay protection tester is a new generation of test instrument developed and produced by Northrop Grumman. The instrument has advanced design concept, modular design, built-in large-capacity lithium battery pack for power supply, small size, light weight and rich test functions. It uses a 9-inch high-definition touch LCD screen, and is easy to operate and use on site. The tester is equipped with high-performance current and voltage amplifier module, which has higher output precision and better stability, meets the requirements of relay protection and automatic device testing, and can be applied to installation and debugging, secondary defect elimination and operation and maintenance of power users such as substations, power plants, distribution networks, rail transit and industrial and mining enterprises.
| Voltage generators | |
| Number of outputs | 4×300V |
| Ranges | AC(L-N)： 4 × 0-300V； |
| DC (L-N)：4 × 0-±400V | |
| Power | 4 × 90VA at 300V |
| Accuracy | error < 0.03 % rd. + 0.01 % rg. typ., at 0 … 300 V； |
| error < 0.08 % rd. + 0.02 % rg. guar., at 0 … 300 V | |
| Resolution | 10mV for 300Vac |
| Output response time | <100μs |
| Distortion (THD%) | <0.03 % typ., <0.1% guar. |
| at nominal values, 50/60 Hz and 20 kHz measurement bandwidth | |
| Current generators | |
| Number of outputs | 6×30A or 3×60A |
| Ranges | AC(L-N)： 6× 0-30A or 3× 0-60A； |
| DC (L-N)：6× 0-±10A | |
| Power | 6 × 110VA at 30A |
| Accuracy | 6×30A： |
| error < 0.03 % rd. + 0.02% rg. typ., at 0 … 30 A； | |
| error < 0.08 % rd. + 0.02 % rg. guar., at 0 … 30 A； | |
| 3×60A： | |
| error < 0.03 % rd. + 0.02% rg. typ, at 0 … 20 A | |
| error < 0.08 % rd. + 0.02% rg.typ., at 20 … 60 A； | |
| error < 0.08 % rd. + 0.02 % rg. guar., at 0 … 20 A； | |
| error < 0.15 % rd. + 0.05 % rg. guar., at 20 … 60 A； | |
| Resolution | 0.1mA |
| Distortion (THD%) | < 0.1 % typ., < 0.3 % guar. |
| at nominal values, 50/60 Hz and 20 kHz measurement bandwidth | |
| Output response time | <100μs。 |
| Optical fiber Ethernet interface | 8pairs，One pair is suitable for gigabit networks |
| interface type | LC interface |
| Wavelength | 100 Mbps: 1310nm, Gigabit: 850nm |
| Communication protocol | IEC61850-9-2，GOOSE |
| Optical fiber serial interface | Four, two for two |
| interface type | ST interface |
| Communication protocol | IEC60044-8，IRIG-B，PPS |
| Frequency-Amplitude chacteristic | ≤±0.05%~±0.5%(10Hz~1kHz) |
| Frequency | DC-10.0kHz； |
| Frequency accuracy | <1mHz(45Hz~65Hz)、 |
| <5mHz(10Hz~45Hz、65 Hz~450Hz)、 | |
| <10mHz(450 Hz~1000Hz)； | |
| Resolution | 0.001Hz |
| Phase | |
| Phase angle range | 0° ~ 360° |
| Phase angel accuracy | ±0.05°typ.(±0.1°guar.),at 50/60Hz |
| Phase angle resolution | 0.01° |
| Binary inputs | 8pairs，0-400V DC threshold or potential free |
| Binary outputs | 4pairs，In which a pair of quick-opening contacts |
| Dimensions | 315mm×240mm×140mm(W×H×D) |
| Weight： | <8kg |
Main features
