Устройство защита от перегруза или коротких замыканий небольших и средних трансформаторов
Устройство применимо для силовых трансформаторов мощностью от 160кВА до 12,5МВА в качестве защиты от перегруза, коротких замыканий, замыканий на землю в сочетании с выключателем или в качестве защиты от перегруза в сочетании с выключателем нагрузки или предохранителями.
Transformer Monitor IKI-30
Intelligent transformer monitoring
Applicable for transformers with nominal power Pn:
160..2500kVA (@5-15kV); 250..7500kVA(@20-25kV); 400..12000kVA(@30-36kV)
Application a) Overcurrent- and short circuit/earth fault protection
by combination of IKI-30 and circuit breaker/ load breaker
Application b) Overcurrent protection by combination of IKI-30 with load breaker
and high voltage fuses; (tripping by IKI-30 disabled in range of short
circuit current; disconnection by high voltage fuses)
Selectable tripping options:
- DMT definite minimum time characteristic (ANSI 51)
- IDMT inverse definite minimum time characteristic (ANSI 51);
2 curves available
- instantaneous overcurrent characteristic (ANSI 50)
- external, fast tripping without delay
- optionally: earth-fault stage characteristic (ANSI 50N, 51N)
Release of tripping coil optionally:
- low power tripping coil (no external power supply needed)
- standard tripping coil (with separate power storage unit PSU)
Self test, On-site function test by test button; relay for watchdog alarm
Event-Recorder for up to 16 events; download by interface-cable to PC (only for type IKI-30E)
Maintenance-free, power supply by current transformer power supply buffered by lithium battery (live cycle > 15 years, if current transformers are not connected)
Technical data
| Pick-up current Is: | 3 ranges | for each range 16 values adjustable; range 1: 5..20 A; range 2: 25..100A; range 3: 110..260 A |
| Short circuit level I>>: short circuit-threshold |
ratio I>>/Is | 8 values selectable (2..20) |
| short circuit delay time | tI>> | 8 values selectable (0..2s); disabling of tripping possible |
| Overcurrent level I>: - Independent overcurrent |
pick-up value I>/ Is | 8 values selectable (1,1..3) |
| delay time | tI> | 16 values selectable (1..300s) |
| - IDMT 1 (IEC very invers) | start point I>/ Is | 8 values selectable (1,1..3) |
| IDMT 2 (IEC extremely invers) | start point I>/ Is | 8 values selectable (1,1..3) |
| characteristic shift: | v | 8 values selectable (0,05..10 s) |
| Optionally earth stage Ie>: earth fault-pick-up value |
ratio Ie>/Is | 8 values selectable (0,1..2) |
| earth fault delay time | tIe> | 8 values selectable (0..5 s) |
| Frequency: | 50/60 Hz selectable | |
| Inherent delay: | approximately 43 ms | |
| Reset: | after 2h or automatic after current recovery or manual by key | |
| Power supply: | by current transformers; if primary current > 1 A; complete supply if primary current > 5A; buffered by lithium battery |
|
| Current transformers: | connected to input 1, 2, 3: optionally to input 4: |
split core current transformer type IKI- 30 LU balanced current split core transformer (only for type IKI-30E) type depending on diameter |
| Outputs: | 2 Alarmrelays: Tripping Output: |
load 230VAC/DC, 5A; N.C. or N.O. selectable suitable for coil 3V@0,02Ws; special version for coil 24V@0,1Ws |
| According to: | IEC 60255-5 | |
| Operating/storage temperatur: | -25°C .. +55°C / -30 ... +70 °C | |
| Housing: | front panel mounting dimension: recommended cut: |
(acc. to DIN 43700); IP 40 96 x 48 x 80 mm (w x h x d) 92 x 45 mm (w x h) |
| Part.-numbers: | - Protection Relay type IKI-30_1: - with earth stage type IKI-30E1 - with earth stage; tripping-output 24V@0,1Ws type IKI-30E2 - Wall mountable housing - Low-Power Trip Coil IKI-30-TC - Interface-Cable for PC / IKI-30 |
2500286 (Relays: NC) | 2501286 (Relays: NO) 2500287 (Relays: NC) | 2501287 (Relays: NO) 2503287 (Relays: NC) | 2504287 (Relays: NO) 2500994 wxhxd = 180x110x137 mm 2500275 3 V, 0.02Ws 2501047 cable with USB connector for download the eventrecorder to a PC |
28 Октябрь, 2014 
11349 
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