EM TEST CNV 508N4 Coupling/Decoupling Networks 4 Pairs / 8 Lines
Description
The CNV 508N4 series are special coupling/decoupling networks being used to perform “Electrical disturbance tests for measuring relays and protection equipment” in accordance to IEC 60255-22-1. A capacitance of 0.5uF is specified to couple the pulses on to the lines.
Each line has a decoupling inductor of >1.5mH to protect the auxiliary equipment from being subjected to the test pulse. The disturbance signal used for this test is a damped oscillatory pulse with a frequency of 1MHz, generated by the EM TEST OCS 500N6.
Depending on the configuration of the DUT several different tests set-ups are used to perform tests in differential mode (line-to-line of the same pair) or common mode (each pair to ground or one pair to all other pairs with these being grounded). The CNV 508N4 is automatically set by the OCS 500N6 selecting the desired coupling mode and lines to be coupled. The coupler offers capability to test up to 4 pairs/8 lines.
The test of measuring relays and protection equipment as outlined in IEC 60255-22-1 includes different coupling modes to test the DUT under different conditions. Each pair of lines is tested individually in differential mode. Common mode test is applied to each pair to ground and to each pair with the other pairs connected to ground.
Features
- Selection of all coupling modes as per IEC 60255-22-1
- Remote controlled by the OCS 500N6
- Coupling capacitor 0.5uF
- Decoupling inductor >1.5mH per line
- Nominal line voltage max. 250V AC/DC
- Nominal line current 4A AC/DC or 16A AC/DC
Specifications
| OVERVIEW | |
| CNV 508N4 MODELS | |
| CNV 508N4 | Coupling/decoupling network with 4A AC/DC per line |
| CNV 508N4.1 | Coupling/decoupling network with 16A AC/DC per line |
| TECHNICAL DETAILS | |
| CNV 508N4 | |
| Nominal voltage | 250V AC/DC per line |
| Nominal current | 4A AC/DC per line |
| Max. test voltage | 3kV peak for 1MHz damped oscillatory wave
Source impedance 200 Ohm |
| CNV 508N4.1 | |
| Nominal voltage | 250V AC/DC per line |
| Nominal current | 16A AC/DC per line |
| Max. test voltage | 3kV peak for 1MHz damped oscillatory wave |
| Source impedance | 200 Ohm |
| COMMON DATA (ALL MODELS) | |
| OUTPUTS | |
| DUT connectors | 4mm safety lab connectors |
| Indications | LEDs to indicate selected coupling mode and lines to be tested |
| COUPLING MODES AS PER IEC 60255-22-1 | |
| Differential Mode | Line-to-line within one pair |
| Common Mode #1 | Test between an individual port and all others (ports not coupled are floating) |
| Common Mode #2 | Test between an individual port and all others (ports not coupled are connected to ground via capacitor) |
| GENERAL DATA | |
| Dimensions | 19″ 3HU |
| Weight | approx. 10kg (CNV 508N4)
approx. 25kg (CNV 508N4.1) |
| Supply voltage | 115/230V +10/-15%, 50/60Hz |
| Fuses | 2 x T2AT (230V) or 2 x T4AT (115V) |
| CN interface | CN interface, 15pin SubD, for remote control by the OCS 500N6 |
