KPVA19x - AC REACTIVE POWER 2-STEP OVERLOAD GUARD
- Precision 2-Step Reactive Power Overload Protection, not affected by heavily distorted waveforms
- 3 or 4-wire systems. Definite time trip delays
- Triple relay operation gives more flexibility
- Optional fast analogue kVAr-signal output, <50mS
- Wide range setting of high overload contact hysteresis
Application
The digitally controlled KPVA19x range provides precision (1.0%) 2-step overload protection and monitoring of three phase generators or motors.
Available for 3-phase 3-wire (2R3) and 4-wire (3R4) systems.
The unit measures the voltage and current true r.m.s. value, and accuracy is independent of any wave form distortion.
As standard the auxiliary voltage is taken from the unit monitored voltage input. A separate AC or DC auxiliary voltage is optionally available.
A green LED indicates POWER on. Start of monitoring function is delayed when power is switched on (default 2 secs delay). In this way false tripping during power up is avoided.
The DIN96 instrument reads the power level directly in kVAr. The kVAr-meter and the triple-zone status LEDs at a glance gives the clear safety message:
Outputs
If output is used for remote meter reading, we recommend 0-1mA for the slave indicator.
The unit meets EN 61010-1 Cat. III, Pollution degree 2 and the
relevant environmental and EMC tests specified in EN 61326-2-4 to comply
with the requirements of the major Classification Societies.
Description
KPVA191E - KPVA191F
Configuration: 3-Phase, 3-Wire (2R3)
Both overload relays can be used for non-essential load release or as an alarm indication. A wide range overload contact hysteresis can be set to enable R2 to be used for a non-essential load to be reconnected or as a standby generator stop signal. Relay R3 is an additional relay that can be used for local indication, as an input to an alarm system etc.
A trip LED flashes when the trip level is passed, the relay trips when the delay has elapsed. The timer resets if the fault is removed during countdown.
KPVA191F have analogue output proportional to the generator kVAr-load.
KPVA194E - KPVA194F
Configuration: 3-Phase, 4-Wire (3R4)
Both overload relays can be used for non-essential load release or as an alarm indication. A wide range overload contact hysteresis can be set to enable R2 to be used for a non-essential load to be reconnected or as a standby generator stop signal. Relay R3 is an additional relay that can be used for local indication, as an input to an alarm system etc.
A trip LED flashes when the trip level is passed, the relay trips when the delay has elapsed. The timer resets if the fault is removed during countdown.
KPVA194F have analogue output proportional to the generator kVAr-load.
