Product Description
Gas realay sedrles QJ are kinds of protective devices installed on oil immersed transformers with on load tap changers of 800 KVA and above, it is mocented on the cinnecting pipe between transformer and oil conservator. When the stop plate of ags relay is rushed by gas or heavy oil folw caused byintemal failure of transformer or on losd tap changeer,the tripping contacts will be closed and the power source be disconnexted automatcally to provide a protection for transformer or on load tap changer.
Technical data:
1. Working temperature:-30ºC~95ºC 2. Switch Capacity:AC 220V 0.3A COS≤0.6 DC 220V 0.3A S≤5×10-³S
3,Operation Character:
Type | QJ-80 | QJ-50 | QJ-25 |
Range of flow(m/s) | 0.7-1.5 | 0.6-1.2 | 0.8-1.2 |
Gas accumulaton(ml) | 250-300 | <250 | |
4,Sealing character:filling transformer oil into the relay, Pressurizing normal temperature 200Kpa, Continued 20min and without any leakage.
5,Insulating property:
Test item | Voltage between contacls | Woleage between terminal and earth | Woleage between signal and trpping termi |
Bring to bear on industry volatye | 2000V/1min | 2000V/1min | 2000V/1min |
Product Description
Gas realay sedrles QJ are kinds of protective devices installed on oil immersed transformers with on load tap changers of 800 KVA and above, it is mocented on the cinnecting pipe between transformer and oil conservator. When the stop plate of ags relay is rushed by gas or heavy oil folw caused byintemal failure of transformer or on losd tap changeer,the tripping contacts will be closed and the power source be disconnexted automatcally to provide a protection for transformer or on load tap changer.
Technical data:
1. Working temperature:-30ºC~95ºC 2. Switch Capacity:AC 220V 0.3A COS≤0.6 DC 220V 0.3A S≤5×10-³S
3,Operation Character:
Type | QJ-80 | QJ-50 | QJ-25 |
Range of flow(m/s) | 0.7-1.5 | 0.6-1.2 | 0.8-1.2 |
Gas accumulaton(ml) | 250-300 | <250 | |
4,Sealing character:filling transformer oil into the relay, Pressurizing normal temperature 200Kpa, Continued 20min and without any leakage.
5,Insulating property:
Test item | Voltage between contacls | Woleage between terminal and earth | Woleage between signal and trpping termi |
Bring to bear on industry volatye | 2000V/1min | 2000V/1min | 2000V/1min |
